./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8 --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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- 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-2329fc7 [2022-12-13 13:21:24,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:21:24,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:21:24,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:21:24,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:21:24,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:21:24,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:21:24,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:21:24,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:21:24,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:21:24,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:21:24,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:21:24,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:21:24,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:21:24,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:21:24,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:21:24,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:21:24,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:21:24,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:21:24,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:21:24,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:21:24,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:21:24,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:21:24,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:21:24,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:21:24,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:21:24,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:21:24,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:21:24,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:21:24,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:21:24,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:21:24,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:21:24,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:21:24,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:21:24,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:21:24,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:21:24,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:21:24,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:21:24,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:21:24,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:21:24,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:21:24,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 13:21:24,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:21:24,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:21:24,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:21:24,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:21:24,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:21:24,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:21:24,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:21:24,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:21:24,668 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:21:24,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:21:24,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:21:24,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:21:24,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:21:24,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:21:24,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:21:24,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:21:24,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:21:24,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:21:24,670 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 13:21:24,670 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:21:24,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:21:24,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:21:24,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:21:24,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:21:24,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:21:24,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:21:24,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:21:24,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:21:24,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:21:24,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:21:24,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:21:24,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:21:24,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:21:24,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:21:24,672 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:21:24,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:21:24,672 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:21:24,672 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2022-12-13 13:21:24,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:21:24,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:21:24,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:21:24,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:21:24,873 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:21:24,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-12-13 13:21:27,436 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:21:27,634 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:21:27,634 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-12-13 13:21:27,646 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/data/7c2e2420c/ac634bdae4064a5882dad182ba30242c/FLAG64b7cec48 [2022-12-13 13:21:27,658 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/data/7c2e2420c/ac634bdae4064a5882dad182ba30242c [2022-12-13 13:21:27,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:21:27,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:21:27,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:21:27,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:21:27,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:21:27,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:21:27" (1/1) ... [2022-12-13 13:21:27,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ced33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:27, skipping insertion in model container [2022-12-13 13:21:27,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:21:27" (1/1) ... [2022-12-13 13:21:27,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:21:27,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:21:28,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:21:28,064 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:21:28,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:21:28,155 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:21:28,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28 WrapperNode [2022-12-13 13:21:28,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:21:28,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:21:28,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:21:28,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:21:28,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,209 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2022-12-13 13:21:28,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:21:28,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:21:28,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:21:28,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:21:28,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,239 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:21:28,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:21:28,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:21:28,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:21:28,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (1/1) ... [2022-12-13 13:21:28,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:21:28,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:28,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:21:28,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:21:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:21:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:21:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:21:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:21:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:21:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:21:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 13:21:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 13:21:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:21:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:21:28,313 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:21:28,430 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:21:28,432 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:21:28,630 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:21:28,635 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:21:28,635 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 13:21:28,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:21:28 BoogieIcfgContainer [2022-12-13 13:21:28,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:21:28,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:21:28,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:21:28,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:21:28,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:21:27" (1/3) ... [2022-12-13 13:21:28,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df08c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:21:28, skipping insertion in model container [2022-12-13 13:21:28,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:21:28" (2/3) ... [2022-12-13 13:21:28,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df08c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:21:28, skipping insertion in model container [2022-12-13 13:21:28,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:21:28" (3/3) ... [2022-12-13 13:21:28,644 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2022-12-13 13:21:28,650 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:21:28,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:21:28,659 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 13:21:28,659 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:21:28,716 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 13:21:28,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 261 flow [2022-12-13 13:21:28,778 INFO L130 PetriNetUnfolder]: 6/127 cut-off events. [2022-12-13 13:21:28,779 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:21:28,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 229 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-12-13 13:21:28,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 128 transitions, 261 flow [2022-12-13 13:21:28,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 127 transitions, 257 flow [2022-12-13 13:21:28,789 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:21:28,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 127 transitions, 257 flow [2022-12-13 13:21:28,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 127 transitions, 257 flow [2022-12-13 13:21:28,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 257 flow [2022-12-13 13:21:28,823 INFO L130 PetriNetUnfolder]: 6/127 cut-off events. [2022-12-13 13:21:28,823 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:21:28,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-12-13 13:21:28,826 INFO L119 LiptonReduction]: Number of co-enabled transitions 4864 [2022-12-13 13:21:29,891 INFO L134 LiptonReduction]: Checked pairs total: 14375 [2022-12-13 13:21:29,892 INFO L136 LiptonReduction]: Total number of compositions: 75 [2022-12-13 13:21:29,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:21:29,907 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;@242aa6ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:21:29,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 13:21:29,911 INFO L130 PetriNetUnfolder]: 1/25 cut-off events. [2022-12-13 13:21:29,912 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:21:29,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:29,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:29,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1613165258, now seen corresponding path program 1 times [2022-12-13 13:21:29,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:29,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894142495] [2022-12-13 13:21:29,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:29,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:21:30,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:30,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894142495] [2022-12-13 13:21:30,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894142495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:30,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:21:30,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:21:30,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514696223] [2022-12-13 13:21:30,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:30,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:21:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:30,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:21:30,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:21:30,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 203 [2022-12-13 13:21:30,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:30,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 203 [2022-12-13 13:21:30,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:30,278 INFO L130 PetriNetUnfolder]: 106/409 cut-off events. [2022-12-13 13:21:30,279 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:21:30,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 409 events. 106/409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2261 event pairs, 84 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 612. Up to 213 conditions per place. [2022-12-13 13:21:30,283 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 24 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2022-12-13 13:21:30,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 167 flow [2022-12-13 13:21:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:21:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:21:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-13 13:21:30,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6354679802955665 [2022-12-13 13:21:30,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-12-13 13:21:30,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-12-13 13:21:30,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:30,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-12-13 13:21:30,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,313 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 113 flow. Second operand 3 states and 387 transitions. [2022-12-13 13:21:30,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 167 flow [2022-12-13 13:21:30,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:21:30,318 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 124 flow [2022-12-13 13:21:30,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2022-12-13 13:21:30,324 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2022-12-13 13:21:30,324 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 124 flow [2022-12-13 13:21:30,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:30,325 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:30,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:21:30,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:30,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1433729537, now seen corresponding path program 1 times [2022-12-13 13:21:30,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:30,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756220384] [2022-12-13 13:21:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:30,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:21:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:30,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756220384] [2022-12-13 13:21:30,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756220384] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:30,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267125776] [2022-12-13 13:21:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:30,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:30,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:30,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:30,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:21:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:30,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:21:30,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:21:30,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:21:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:21:30,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267125776] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:21:30,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:21:30,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 13:21:30,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643045689] [2022-12-13 13:21:30,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:21:30,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:21:30,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:30,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:21:30,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:21:30,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 203 [2022-12-13 13:21:30,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:30,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 203 [2022-12-13 13:21:30,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:30,694 INFO L130 PetriNetUnfolder]: 106/412 cut-off events. [2022-12-13 13:21:30,695 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:21:30,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 412 events. 106/412 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2237 event pairs, 84 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 631. Up to 213 conditions per place. [2022-12-13 13:21:30,698 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 24 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2022-12-13 13:21:30,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 194 flow [2022-12-13 13:21:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:21:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 746 transitions. [2022-12-13 13:21:30,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6124794745484401 [2022-12-13 13:21:30,704 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 746 transitions. [2022-12-13 13:21:30,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 746 transitions. [2022-12-13 13:21:30,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:30,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 746 transitions. [2022-12-13 13:21:30,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,716 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,716 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 6 states and 746 transitions. [2022-12-13 13:21:30,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 194 flow [2022-12-13 13:21:30,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 13:21:30,719 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 156 flow [2022-12-13 13:21:30,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2022-12-13 13:21:30,720 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2022-12-13 13:21:30,721 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 156 flow [2022-12-13 13:21:30,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:30,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:30,722 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:30,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:21:30,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:30,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2035747789, now seen corresponding path program 2 times [2022-12-13 13:21:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:30,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386244805] [2022-12-13 13:21:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:21:31,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:31,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386244805] [2022-12-13 13:21:31,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386244805] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:31,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40530814] [2022-12-13 13:21:31,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:21:31,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:31,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:31,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:31,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:21:31,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:21:31,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:21:31,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 13:21:31,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:31,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:21:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:31,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:21:31,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:31,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:31,219 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:21:31,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:21:31,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:31,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:31,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:31,253 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:21:31,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:21:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:21:31,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:21:31,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40530814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:31,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:21:31,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2022-12-13 13:21:31,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562668190] [2022-12-13 13:21:31,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:31,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:21:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:31,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:21:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:21:31,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 203 [2022-12-13 13:21:31,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 98.33333333333333) internal successors, (885), 9 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:31,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:31,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 203 [2022-12-13 13:21:31,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:32,094 INFO L130 PetriNetUnfolder]: 691/1607 cut-off events. [2022-12-13 13:21:32,094 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:21:32,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 1607 events. 691/1607 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8302 event pairs, 293 based on Foata normal form. 0/1497 useless extension candidates. Maximal degree in co-relation 2987. Up to 632 conditions per place. [2022-12-13 13:21:32,103 INFO L137 encePairwiseOnDemand]: 187/203 looper letters, 135 selfloop transitions, 27 changer transitions 0/175 dead transitions. [2022-12-13 13:21:32,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 175 transitions, 712 flow [2022-12-13 13:21:32,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:21:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 13:21:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1130 transitions. [2022-12-13 13:21:32,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5566502463054187 [2022-12-13 13:21:32,107 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1130 transitions. [2022-12-13 13:21:32,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1130 transitions. [2022-12-13 13:21:32,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:32,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1130 transitions. [2022-12-13 13:21:32,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:32,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:32,115 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:32,115 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 156 flow. Second operand 10 states and 1130 transitions. [2022-12-13 13:21:32,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 175 transitions, 712 flow [2022-12-13 13:21:32,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 175 transitions, 698 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 13:21:32,119 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 346 flow [2022-12-13 13:21:32,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2022-12-13 13:21:32,120 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2022-12-13 13:21:32,120 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 346 flow [2022-12-13 13:21:32,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.33333333333333) internal successors, (885), 9 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:32,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:32,121 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:32,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:21:32,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:32,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1914684874, now seen corresponding path program 1 times [2022-12-13 13:21:32,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:32,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176212920] [2022-12-13 13:21:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:32,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:21:32,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:32,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176212920] [2022-12-13 13:21:32,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176212920] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:32,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995175157] [2022-12-13 13:21:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:32,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:32,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:32,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:32,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:21:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:32,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:21:32,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:21:32,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:21:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:21:32,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995175157] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:21:32,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:21:32,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 13:21:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643179883] [2022-12-13 13:21:32,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:21:32,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:21:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:21:32,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:21:32,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 203 [2022-12-13 13:21:32,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 120.38461538461539) internal successors, (1565), 13 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:32,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:32,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 203 [2022-12-13 13:21:32,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:32,752 INFO L130 PetriNetUnfolder]: 305/1118 cut-off events. [2022-12-13 13:21:32,752 INFO L131 PetriNetUnfolder]: For 362/365 co-relation queries the response was YES. [2022-12-13 13:21:32,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1118 events. 305/1118 cut-off events. For 362/365 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6530 event pairs, 207 based on Foata normal form. 6/1082 useless extension candidates. Maximal degree in co-relation 2296. Up to 545 conditions per place. [2022-12-13 13:21:32,757 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 28 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2022-12-13 13:21:32,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 460 flow [2022-12-13 13:21:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:21:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 13:21:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1469 transitions. [2022-12-13 13:21:32,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6030377668308703 [2022-12-13 13:21:32,763 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1469 transitions. [2022-12-13 13:21:32,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1469 transitions. [2022-12-13 13:21:32,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:32,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1469 transitions. [2022-12-13 13:21:32,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 122.41666666666667) internal successors, (1469), 12 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:32,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:32,778 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:32,778 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 346 flow. Second operand 12 states and 1469 transitions. [2022-12-13 13:21:32,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 460 flow [2022-12-13 13:21:32,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:21:32,785 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 429 flow [2022-12-13 13:21:32,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2022-12-13 13:21:32,787 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2022-12-13 13:21:32,787 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 429 flow [2022-12-13 13:21:32,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 120.38461538461539) internal successors, (1565), 13 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:32,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:32,787 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:32,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:21:32,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:32,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:32,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash 224539210, now seen corresponding path program 2 times [2022-12-13 13:21:32,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:32,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60205806] [2022-12-13 13:21:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:33,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:33,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60205806] [2022-12-13 13:21:33,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60205806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:33,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:21:33,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:21:33,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801142378] [2022-12-13 13:21:33,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:33,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:33,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:33,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:21:33,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 203 [2022-12-13 13:21:33,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:33,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:33,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 203 [2022-12-13 13:21:33,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:33,937 INFO L130 PetriNetUnfolder]: 977/2350 cut-off events. [2022-12-13 13:21:33,937 INFO L131 PetriNetUnfolder]: For 2165/2179 co-relation queries the response was YES. [2022-12-13 13:21:33,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5852 conditions, 2350 events. 977/2350 cut-off events. For 2165/2179 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13807 event pairs, 394 based on Foata normal form. 0/2258 useless extension candidates. Maximal degree in co-relation 5770. Up to 1488 conditions per place. [2022-12-13 13:21:33,946 INFO L137 encePairwiseOnDemand]: 188/203 looper letters, 127 selfloop transitions, 46 changer transitions 0/192 dead transitions. [2022-12-13 13:21:33,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 192 transitions, 1083 flow [2022-12-13 13:21:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:21:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 746 transitions. [2022-12-13 13:21:33,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6124794745484401 [2022-12-13 13:21:33,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 746 transitions. [2022-12-13 13:21:33,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 746 transitions. [2022-12-13 13:21:33,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:33,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 746 transitions. [2022-12-13 13:21:33,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:33,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:33,951 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:33,951 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 429 flow. Second operand 6 states and 746 transitions. [2022-12-13 13:21:33,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 192 transitions, 1083 flow [2022-12-13 13:21:33,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 192 transitions, 1035 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-12-13 13:21:33,956 INFO L231 Difference]: Finished difference. Result has 100 places, 131 transitions, 709 flow [2022-12-13 13:21:33,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=709, PETRI_PLACES=100, PETRI_TRANSITIONS=131} [2022-12-13 13:21:33,957 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2022-12-13 13:21:33,957 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 131 transitions, 709 flow [2022-12-13 13:21:33,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:33,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:33,957 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:33,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:21:33,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1127679136, now seen corresponding path program 1 times [2022-12-13 13:21:33,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:33,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24737890] [2022-12-13 13:21:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:34,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:34,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24737890] [2022-12-13 13:21:34,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24737890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:34,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:21:34,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:21:34,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445817067] [2022-12-13 13:21:34,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:34,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:21:34,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 203 [2022-12-13 13:21:34,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 131 transitions, 709 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:34,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:34,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 203 [2022-12-13 13:21:34,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:34,923 INFO L130 PetriNetUnfolder]: 1617/3419 cut-off events. [2022-12-13 13:21:34,923 INFO L131 PetriNetUnfolder]: For 4686/4718 co-relation queries the response was YES. [2022-12-13 13:21:34,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10819 conditions, 3419 events. 1617/3419 cut-off events. For 4686/4718 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19481 event pairs, 555 based on Foata normal form. 0/3295 useless extension candidates. Maximal degree in co-relation 10757. Up to 2681 conditions per place. [2022-12-13 13:21:34,939 INFO L137 encePairwiseOnDemand]: 180/203 looper letters, 170 selfloop transitions, 89 changer transitions 8/274 dead transitions. [2022-12-13 13:21:34,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 274 transitions, 1793 flow [2022-12-13 13:21:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:21:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 725 transitions. [2022-12-13 13:21:34,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2022-12-13 13:21:34,942 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 725 transitions. [2022-12-13 13:21:34,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 725 transitions. [2022-12-13 13:21:34,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:34,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 725 transitions. [2022-12-13 13:21:34,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:34,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:34,946 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:34,946 INFO L175 Difference]: Start difference. First operand has 100 places, 131 transitions, 709 flow. Second operand 6 states and 725 transitions. [2022-12-13 13:21:34,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 274 transitions, 1793 flow [2022-12-13 13:21:34,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 274 transitions, 1793 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:21:34,955 INFO L231 Difference]: Finished difference. Result has 110 places, 214 transitions, 1483 flow [2022-12-13 13:21:34,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1483, PETRI_PLACES=110, PETRI_TRANSITIONS=214} [2022-12-13 13:21:34,955 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2022-12-13 13:21:34,955 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 214 transitions, 1483 flow [2022-12-13 13:21:34,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:34,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:34,956 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:34,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:21:34,956 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:34,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:34,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1949063580, now seen corresponding path program 1 times [2022-12-13 13:21:34,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:34,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540338778] [2022-12-13 13:21:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:34,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:35,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:35,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540338778] [2022-12-13 13:21:35,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540338778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:35,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:21:35,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:21:35,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925003847] [2022-12-13 13:21:35,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:35,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:35,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:35,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:35,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:21:35,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 203 [2022-12-13 13:21:35,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 214 transitions, 1483 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:35,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:35,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 203 [2022-12-13 13:21:35,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:35,909 INFO L130 PetriNetUnfolder]: 1832/3823 cut-off events. [2022-12-13 13:21:35,909 INFO L131 PetriNetUnfolder]: For 9663/9743 co-relation queries the response was YES. [2022-12-13 13:21:35,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14678 conditions, 3823 events. 1832/3823 cut-off events. For 9663/9743 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 22003 event pairs, 612 based on Foata normal form. 0/3694 useless extension candidates. Maximal degree in co-relation 14611. Up to 3283 conditions per place. [2022-12-13 13:21:35,944 INFO L137 encePairwiseOnDemand]: 188/203 looper letters, 229 selfloop transitions, 72 changer transitions 0/306 dead transitions. [2022-12-13 13:21:35,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 306 transitions, 2704 flow [2022-12-13 13:21:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:21:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 678 transitions. [2022-12-13 13:21:35,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5566502463054187 [2022-12-13 13:21:35,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 678 transitions. [2022-12-13 13:21:35,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 678 transitions. [2022-12-13 13:21:35,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:35,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 678 transitions. [2022-12-13 13:21:35,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:35,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:35,955 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:35,955 INFO L175 Difference]: Start difference. First operand has 110 places, 214 transitions, 1483 flow. Second operand 6 states and 678 transitions. [2022-12-13 13:21:35,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 306 transitions, 2704 flow [2022-12-13 13:21:35,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 306 transitions, 2572 flow, removed 66 selfloop flow, removed 0 redundant places. [2022-12-13 13:21:35,986 INFO L231 Difference]: Finished difference. Result has 120 places, 268 transitions, 2178 flow [2022-12-13 13:21:35,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2178, PETRI_PLACES=120, PETRI_TRANSITIONS=268} [2022-12-13 13:21:35,987 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2022-12-13 13:21:35,987 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 268 transitions, 2178 flow [2022-12-13 13:21:35,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:35,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:35,988 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:35,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:21:35,988 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:35,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash -953885349, now seen corresponding path program 1 times [2022-12-13 13:21:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:35,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162952799] [2022-12-13 13:21:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 13:21:36,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:36,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162952799] [2022-12-13 13:21:36,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162952799] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:36,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298564101] [2022-12-13 13:21:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:36,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:36,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:36,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:36,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:21:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:36,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 13:21:36,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:36,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:21:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:36,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:21:36,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298564101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:36,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:21:36,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-12-13 13:21:36,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44057952] [2022-12-13 13:21:36,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:36,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:36,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:36,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:36,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:21:36,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 203 [2022-12-13 13:21:36,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 268 transitions, 2178 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:36,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:36,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 203 [2022-12-13 13:21:36,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:37,676 INFO L130 PetriNetUnfolder]: 2399/6032 cut-off events. [2022-12-13 13:21:37,676 INFO L131 PetriNetUnfolder]: For 19216/19458 co-relation queries the response was YES. [2022-12-13 13:21:37,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23332 conditions, 6032 events. 2399/6032 cut-off events. For 19216/19458 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 45044 event pairs, 304 based on Foata normal form. 19/5925 useless extension candidates. Maximal degree in co-relation 23260. Up to 1571 conditions per place. [2022-12-13 13:21:37,707 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 129 selfloop transitions, 12 changer transitions 0/348 dead transitions. [2022-12-13 13:21:37,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 348 transitions, 3083 flow [2022-12-13 13:21:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:37,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:21:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 732 transitions. [2022-12-13 13:21:37,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6009852216748769 [2022-12-13 13:21:37,708 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 732 transitions. [2022-12-13 13:21:37,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 732 transitions. [2022-12-13 13:21:37,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:37,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 732 transitions. [2022-12-13 13:21:37,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:37,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:37,711 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:37,711 INFO L175 Difference]: Start difference. First operand has 120 places, 268 transitions, 2178 flow. Second operand 6 states and 732 transitions. [2022-12-13 13:21:37,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 348 transitions, 3083 flow [2022-12-13 13:21:37,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 348 transitions, 2881 flow, removed 101 selfloop flow, removed 0 redundant places. [2022-12-13 13:21:37,778 INFO L231 Difference]: Finished difference. Result has 128 places, 278 transitions, 2095 flow [2022-12-13 13:21:37,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2095, PETRI_PLACES=128, PETRI_TRANSITIONS=278} [2022-12-13 13:21:37,779 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2022-12-13 13:21:37,779 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 278 transitions, 2095 flow [2022-12-13 13:21:37,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:37,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:37,779 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:37,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:21:37,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 13:21:37,981 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:37,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:37,982 INFO L85 PathProgramCache]: Analyzing trace with hash 38424285, now seen corresponding path program 2 times [2022-12-13 13:21:37,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:37,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629391968] [2022-12-13 13:21:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:38,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 13:21:38,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:38,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629391968] [2022-12-13 13:21:38,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629391968] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:38,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200259718] [2022-12-13 13:21:38,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:21:38,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:38,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:38,454 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:38,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:21:38,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:21:38,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:21:38,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 13:21:38,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:38,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:21:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:38,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:21:38,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200259718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:38,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:21:38,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-12-13 13:21:38,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923920874] [2022-12-13 13:21:38,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:38,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:38,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:38,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:38,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:21:38,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 203 [2022-12-13 13:21:38,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 278 transitions, 2095 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:38,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:38,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 203 [2022-12-13 13:21:38,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:39,654 INFO L130 PetriNetUnfolder]: 2671/6675 cut-off events. [2022-12-13 13:21:39,655 INFO L131 PetriNetUnfolder]: For 18575/18820 co-relation queries the response was YES. [2022-12-13 13:21:39,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25893 conditions, 6675 events. 2671/6675 cut-off events. For 18575/18820 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 50906 event pairs, 377 based on Foata normal form. 30/6621 useless extension candidates. Maximal degree in co-relation 25816. Up to 1876 conditions per place. [2022-12-13 13:21:39,688 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 116 selfloop transitions, 19 changer transitions 0/342 dead transitions. [2022-12-13 13:21:39,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 342 transitions, 2888 flow [2022-12-13 13:21:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:21:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 724 transitions. [2022-12-13 13:21:39,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5944170771756979 [2022-12-13 13:21:39,692 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 724 transitions. [2022-12-13 13:21:39,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 724 transitions. [2022-12-13 13:21:39,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:39,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 724 transitions. [2022-12-13 13:21:39,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:39,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:39,698 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:39,698 INFO L175 Difference]: Start difference. First operand has 128 places, 278 transitions, 2095 flow. Second operand 6 states and 724 transitions. [2022-12-13 13:21:39,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 342 transitions, 2888 flow [2022-12-13 13:21:39,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 342 transitions, 2887 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:21:39,760 INFO L231 Difference]: Finished difference. Result has 134 places, 287 transitions, 2236 flow [2022-12-13 13:21:39,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2236, PETRI_PLACES=134, PETRI_TRANSITIONS=287} [2022-12-13 13:21:39,761 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2022-12-13 13:21:39,761 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 287 transitions, 2236 flow [2022-12-13 13:21:39,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:39,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:39,761 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:39,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:21:39,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:39,963 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash -640828949, now seen corresponding path program 3 times [2022-12-13 13:21:39,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:39,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168276368] [2022-12-13 13:21:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:39,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 13:21:40,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:40,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168276368] [2022-12-13 13:21:40,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168276368] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:40,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083228550] [2022-12-13 13:21:40,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:21:40,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:40,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:40,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:40,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:21:40,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 13:21:40,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:21:40,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 13:21:40,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:40,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:21:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:40,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:21:40,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083228550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:40,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:21:40,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-12-13 13:21:40,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229082789] [2022-12-13 13:21:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:40,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:40,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:21:40,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 203 [2022-12-13 13:21:40,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 287 transitions, 2236 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:40,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:40,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 203 [2022-12-13 13:21:40,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:41,657 INFO L130 PetriNetUnfolder]: 2911/7381 cut-off events. [2022-12-13 13:21:41,657 INFO L131 PetriNetUnfolder]: For 22679/22981 co-relation queries the response was YES. [2022-12-13 13:21:41,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29257 conditions, 7381 events. 2911/7381 cut-off events. For 22679/22981 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 59666 event pairs, 340 based on Foata normal form. 16/7295 useless extension candidates. Maximal degree in co-relation 29177. Up to 1991 conditions per place. [2022-12-13 13:21:41,697 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 140 selfloop transitions, 18 changer transitions 0/365 dead transitions. [2022-12-13 13:21:41,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 365 transitions, 3137 flow [2022-12-13 13:21:41,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:21:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 734 transitions. [2022-12-13 13:21:41,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6026272577996716 [2022-12-13 13:21:41,699 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 734 transitions. [2022-12-13 13:21:41,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 734 transitions. [2022-12-13 13:21:41,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:41,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 734 transitions. [2022-12-13 13:21:41,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:41,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:41,701 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:41,701 INFO L175 Difference]: Start difference. First operand has 134 places, 287 transitions, 2236 flow. Second operand 6 states and 734 transitions. [2022-12-13 13:21:41,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 365 transitions, 3137 flow [2022-12-13 13:21:41,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 365 transitions, 3121 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 13:21:41,751 INFO L231 Difference]: Finished difference. Result has 140 places, 292 transitions, 2338 flow [2022-12-13 13:21:41,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2338, PETRI_PLACES=140, PETRI_TRANSITIONS=292} [2022-12-13 13:21:41,752 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2022-12-13 13:21:41,752 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 292 transitions, 2338 flow [2022-12-13 13:21:41,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:41,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:41,752 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:41,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 13:21:41,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:41,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:41,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1051006693, now seen corresponding path program 4 times [2022-12-13 13:21:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:41,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901365567] [2022-12-13 13:21:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:41,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 13:21:42,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:42,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901365567] [2022-12-13 13:21:42,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901365567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:42,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423615098] [2022-12-13 13:21:42,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:21:42,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:42,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:42,280 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:42,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:21:42,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:21:42,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:21:42,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 13:21:42,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:42,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:21:42,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:21:42,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:42,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:21:42,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:42,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:42,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:21:42,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:42,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:42,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:42,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:21:42,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:21:42,613 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:21:42,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 17 treesize of output 11 [2022-12-13 13:21:42,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-13 13:21:42,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-13 13:21:42,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-13 13:21:42,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-13 13:21:42,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-13 13:21:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:42,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:21:42,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423615098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:42,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:21:42,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 13 [2022-12-13 13:21:42,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512891165] [2022-12-13 13:21:42,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:42,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:21:42,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:42,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:21:42,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:21:43,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 203 [2022-12-13 13:21:43,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 292 transitions, 2338 flow. Second operand has 12 states, 12 states have (on average 88.5) internal successors, (1062), 12 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:43,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:43,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 203 [2022-12-13 13:21:43,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:45,479 INFO L130 PetriNetUnfolder]: 3958/8873 cut-off events. [2022-12-13 13:21:45,479 INFO L131 PetriNetUnfolder]: For 35874/36125 co-relation queries the response was YES. [2022-12-13 13:21:45,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39811 conditions, 8873 events. 3958/8873 cut-off events. For 35874/36125 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 66622 event pairs, 976 based on Foata normal form. 50/8885 useless extension candidates. Maximal degree in co-relation 39728. Up to 5011 conditions per place. [2022-12-13 13:21:45,521 INFO L137 encePairwiseOnDemand]: 185/203 looper letters, 500 selfloop transitions, 97 changer transitions 0/648 dead transitions. [2022-12-13 13:21:45,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 648 transitions, 6591 flow [2022-12-13 13:21:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 13:21:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 13:21:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1323 transitions. [2022-12-13 13:21:45,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5013262599469496 [2022-12-13 13:21:45,524 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1323 transitions. [2022-12-13 13:21:45,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1323 transitions. [2022-12-13 13:21:45,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:45,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1323 transitions. [2022-12-13 13:21:45,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:45,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 203.0) internal successors, (2842), 14 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:45,530 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 203.0) internal successors, (2842), 14 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:45,530 INFO L175 Difference]: Start difference. First operand has 140 places, 292 transitions, 2338 flow. Second operand 13 states and 1323 transitions. [2022-12-13 13:21:45,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 648 transitions, 6591 flow [2022-12-13 13:21:45,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 648 transitions, 6560 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 13:21:45,590 INFO L231 Difference]: Finished difference. Result has 160 places, 375 transitions, 3784 flow [2022-12-13 13:21:45,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3784, PETRI_PLACES=160, PETRI_TRANSITIONS=375} [2022-12-13 13:21:45,591 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 104 predicate places. [2022-12-13 13:21:45,591 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 375 transitions, 3784 flow [2022-12-13 13:21:45,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.5) internal successors, (1062), 12 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:45,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:45,591 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:45,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:21:45,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 13:21:45,793 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:45,794 INFO L85 PathProgramCache]: Analyzing trace with hash 30853529, now seen corresponding path program 5 times [2022-12-13 13:21:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:45,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573653650] [2022-12-13 13:21:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:45,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 13:21:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:46,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573653650] [2022-12-13 13:21:46,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573653650] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:46,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444901208] [2022-12-13 13:21:46,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:21:46,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:46,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:46,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:46,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:21:46,180 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-13 13:21:46,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:21:46,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 13:21:46,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:46,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:21:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:46,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:21:46,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444901208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:46,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:21:46,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-12-13 13:21:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289463271] [2022-12-13 13:21:46,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:46,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:46,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:46,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:21:46,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 203 [2022-12-13 13:21:46,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 375 transitions, 3784 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:46,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:46,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 203 [2022-12-13 13:21:46,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:47,459 INFO L130 PetriNetUnfolder]: 2483/6298 cut-off events. [2022-12-13 13:21:47,460 INFO L131 PetriNetUnfolder]: For 24470/24688 co-relation queries the response was YES. [2022-12-13 13:21:47,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25919 conditions, 6298 events. 2483/6298 cut-off events. For 24470/24688 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 50201 event pairs, 406 based on Foata normal form. 33/6240 useless extension candidates. Maximal degree in co-relation 25826. Up to 1955 conditions per place. [2022-12-13 13:21:47,494 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 124 selfloop transitions, 20 changer transitions 0/355 dead transitions. [2022-12-13 13:21:47,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 355 transitions, 3362 flow [2022-12-13 13:21:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:21:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:21:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 843 transitions. [2022-12-13 13:21:47,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5932441942294159 [2022-12-13 13:21:47,496 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 843 transitions. [2022-12-13 13:21:47,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 843 transitions. [2022-12-13 13:21:47,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:47,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 843 transitions. [2022-12-13 13:21:47,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.42857142857143) internal successors, (843), 7 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:47,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:47,500 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:47,500 INFO L175 Difference]: Start difference. First operand has 160 places, 375 transitions, 3784 flow. Second operand 7 states and 843 transitions. [2022-12-13 13:21:47,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 355 transitions, 3362 flow [2022-12-13 13:21:47,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 355 transitions, 3248 flow, removed 51 selfloop flow, removed 4 redundant places. [2022-12-13 13:21:47,572 INFO L231 Difference]: Finished difference. Result has 161 places, 299 transitions, 2547 flow [2022-12-13 13:21:47,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2547, PETRI_PLACES=161, PETRI_TRANSITIONS=299} [2022-12-13 13:21:47,573 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 105 predicate places. [2022-12-13 13:21:47,573 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 299 transitions, 2547 flow [2022-12-13 13:21:47,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:47,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:47,573 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:47,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:21:47,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 13:21:47,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:47,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1352514232, now seen corresponding path program 1 times [2022-12-13 13:21:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:47,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385568644] [2022-12-13 13:21:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:47,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:47,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385568644] [2022-12-13 13:21:47,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385568644] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:47,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135878705] [2022-12-13 13:21:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:47,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:47,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:47,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:21:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:47,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:21:47,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:47,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:21:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:47,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135878705] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:21:47,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:21:47,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 13:21:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620255147] [2022-12-13 13:21:47,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:21:47,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:21:47,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:21:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:21:47,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 203 [2022-12-13 13:21:47,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 299 transitions, 2547 flow. Second operand has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:47,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:47,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 203 [2022-12-13 13:21:47,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:49,541 INFO L130 PetriNetUnfolder]: 3557/8796 cut-off events. [2022-12-13 13:21:49,541 INFO L131 PetriNetUnfolder]: For 32798/33176 co-relation queries the response was YES. [2022-12-13 13:21:49,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37278 conditions, 8796 events. 3557/8796 cut-off events. For 32798/33176 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 65921 event pairs, 397 based on Foata normal form. 123/8818 useless extension candidates. Maximal degree in co-relation 37185. Up to 2426 conditions per place. [2022-12-13 13:21:49,623 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 170 selfloop transitions, 23 changer transitions 0/404 dead transitions. [2022-12-13 13:21:49,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 404 transitions, 3834 flow [2022-12-13 13:21:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:21:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 787 transitions. [2022-12-13 13:21:49,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6461412151067324 [2022-12-13 13:21:49,626 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 787 transitions. [2022-12-13 13:21:49,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 787 transitions. [2022-12-13 13:21:49,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:49,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 787 transitions. [2022-12-13 13:21:49,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.16666666666666) internal successors, (787), 6 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:49,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:49,633 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:49,633 INFO L175 Difference]: Start difference. First operand has 161 places, 299 transitions, 2547 flow. Second operand 6 states and 787 transitions. [2022-12-13 13:21:49,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 404 transitions, 3834 flow [2022-12-13 13:21:49,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 404 transitions, 3760 flow, removed 19 selfloop flow, removed 6 redundant places. [2022-12-13 13:21:49,743 INFO L231 Difference]: Finished difference. Result has 164 places, 308 transitions, 2659 flow [2022-12-13 13:21:49,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2659, PETRI_PLACES=164, PETRI_TRANSITIONS=308} [2022-12-13 13:21:49,744 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 108 predicate places. [2022-12-13 13:21:49,744 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 308 transitions, 2659 flow [2022-12-13 13:21:49,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:49,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:49,745 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:49,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 13:21:49,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 13:21:49,947 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:49,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:49,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1170658052, now seen corresponding path program 1 times [2022-12-13 13:21:49,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:49,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338303913] [2022-12-13 13:21:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:49,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-13 13:21:50,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:50,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338303913] [2022-12-13 13:21:50,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338303913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:50,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:21:50,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:21:50,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833443724] [2022-12-13 13:21:50,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:50,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:50,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:50,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:21:50,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 203 [2022-12-13 13:21:50,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 308 transitions, 2659 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:50,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:50,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 203 [2022-12-13 13:21:50,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:21:52,504 INFO L130 PetriNetUnfolder]: 5108/11119 cut-off events. [2022-12-13 13:21:52,504 INFO L131 PetriNetUnfolder]: For 49760/50100 co-relation queries the response was YES. [2022-12-13 13:21:52,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53283 conditions, 11119 events. 5108/11119 cut-off events. For 49760/50100 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 79433 event pairs, 968 based on Foata normal form. 166/11248 useless extension candidates. Maximal degree in co-relation 53190. Up to 7921 conditions per place. [2022-12-13 13:21:52,608 INFO L137 encePairwiseOnDemand]: 192/203 looper letters, 280 selfloop transitions, 90 changer transitions 0/421 dead transitions. [2022-12-13 13:21:52,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 421 transitions, 4563 flow [2022-12-13 13:21:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:21:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 715 transitions. [2022-12-13 13:21:52,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5870279146141215 [2022-12-13 13:21:52,611 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 715 transitions. [2022-12-13 13:21:52,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 715 transitions. [2022-12-13 13:21:52,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:21:52,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 715 transitions. [2022-12-13 13:21:52,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:52,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:52,615 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:52,615 INFO L175 Difference]: Start difference. First operand has 164 places, 308 transitions, 2659 flow. Second operand 6 states and 715 transitions. [2022-12-13 13:21:52,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 421 transitions, 4563 flow [2022-12-13 13:21:52,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 421 transitions, 4553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:21:52,731 INFO L231 Difference]: Finished difference. Result has 173 places, 347 transitions, 3565 flow [2022-12-13 13:21:52,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3565, PETRI_PLACES=173, PETRI_TRANSITIONS=347} [2022-12-13 13:21:52,732 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 117 predicate places. [2022-12-13 13:21:52,732 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 347 transitions, 3565 flow [2022-12-13 13:21:52,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:52,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:21:52,733 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:52,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:21:52,733 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:21:52,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2094098, now seen corresponding path program 1 times [2022-12-13 13:21:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:52,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591208213] [2022-12-13 13:21:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:52,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:53,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:53,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591208213] [2022-12-13 13:21:53,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591208213] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:53,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999878608] [2022-12-13 13:21:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:53,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:53,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:53,414 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:53,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:21:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:53,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 13:21:53,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:53,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:21:53,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:21:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:21:53,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:21:53,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:21:53,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-13 13:21:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:53,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:21:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:21:54,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999878608] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:21:54,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:21:54,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-12-13 13:21:54,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596162215] [2022-12-13 13:21:54,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:21:54,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 13:21:54,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 13:21:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2022-12-13 13:21:58,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 203 [2022-12-13 13:21:58,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 347 transitions, 3565 flow. Second operand has 31 states, 31 states have (on average 93.54838709677419) internal successors, (2900), 31 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:58,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:58,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 203 [2022-12-13 13:21:58,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:22:02,941 INFO L130 PetriNetUnfolder]: 6535/14246 cut-off events. [2022-12-13 13:22:02,941 INFO L131 PetriNetUnfolder]: For 80131/80536 co-relation queries the response was YES. [2022-12-13 13:22:03,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74831 conditions, 14246 events. 6535/14246 cut-off events. For 80131/80536 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 107918 event pairs, 744 based on Foata normal form. 66/14254 useless extension candidates. Maximal degree in co-relation 74733. Up to 4820 conditions per place. [2022-12-13 13:22:03,062 INFO L137 encePairwiseOnDemand]: 185/203 looper letters, 881 selfloop transitions, 157 changer transitions 2/1091 dead transitions. [2022-12-13 13:22:03,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 1091 transitions, 13225 flow [2022-12-13 13:22:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 13:22:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 13:22:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1917 transitions. [2022-12-13 13:22:03,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5246305418719212 [2022-12-13 13:22:03,065 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1917 transitions. [2022-12-13 13:22:03,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1917 transitions. [2022-12-13 13:22:03,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:22:03,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1917 transitions. [2022-12-13 13:22:03,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 106.5) internal successors, (1917), 18 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:03,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 203.0) internal successors, (3857), 19 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:03,071 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 203.0) internal successors, (3857), 19 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:03,071 INFO L175 Difference]: Start difference. First operand has 173 places, 347 transitions, 3565 flow. Second operand 18 states and 1917 transitions. [2022-12-13 13:22:03,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 1091 transitions, 13225 flow [2022-12-13 13:22:03,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 1091 transitions, 12877 flow, removed 174 selfloop flow, removed 0 redundant places. [2022-12-13 13:22:03,284 INFO L231 Difference]: Finished difference. Result has 203 places, 469 transitions, 5796 flow [2022-12-13 13:22:03,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5796, PETRI_PLACES=203, PETRI_TRANSITIONS=469} [2022-12-13 13:22:03,284 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 147 predicate places. [2022-12-13 13:22:03,284 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 469 transitions, 5796 flow [2022-12-13 13:22:03,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 93.54838709677419) internal successors, (2900), 31 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:03,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:22:03,285 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 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] [2022-12-13 13:22:03,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 13:22:03,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 13:22:03,486 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:22:03,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:22:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1523344119, now seen corresponding path program 1 times [2022-12-13 13:22:03,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:22:03,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039048476] [2022-12-13 13:22:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:22:03,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:22:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:22:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:22:04,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:22:04,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039048476] [2022-12-13 13:22:04,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039048476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:22:04,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664038231] [2022-12-13 13:22:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:22:04,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:22:04,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:22:04,107 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:22:04,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:22:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:22:04,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 13:22:04,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:22:04,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:22:04,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:22:04,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:22:04,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:22:04,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:04,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-13 13:22:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:22:04,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:22:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:22:05,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664038231] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:22:05,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:22:05,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-12-13 13:22:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427933096] [2022-12-13 13:22:05,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:22:05,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 13:22:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:22:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 13:22:05,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2022-12-13 13:22:08,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 203 [2022-12-13 13:22:08,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 469 transitions, 5796 flow. Second operand has 31 states, 31 states have (on average 84.2258064516129) internal successors, (2611), 31 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:08,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:22:08,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 203 [2022-12-13 13:22:08,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:22:16,346 INFO L130 PetriNetUnfolder]: 10380/21664 cut-off events. [2022-12-13 13:22:16,346 INFO L131 PetriNetUnfolder]: For 141149/141450 co-relation queries the response was YES. [2022-12-13 13:22:16,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118419 conditions, 21664 events. 10380/21664 cut-off events. For 141149/141450 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 169878 event pairs, 1839 based on Foata normal form. 147/21774 useless extension candidates. Maximal degree in co-relation 118306. Up to 9343 conditions per place. [2022-12-13 13:22:16,606 INFO L137 encePairwiseOnDemand]: 174/203 looper letters, 1017 selfloop transitions, 179 changer transitions 14/1227 dead transitions. [2022-12-13 13:22:16,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1227 transitions, 15259 flow [2022-12-13 13:22:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 13:22:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 13:22:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1741 transitions. [2022-12-13 13:22:16,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.504491451753115 [2022-12-13 13:22:16,610 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1741 transitions. [2022-12-13 13:22:16,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1741 transitions. [2022-12-13 13:22:16,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:22:16,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1741 transitions. [2022-12-13 13:22:16,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.41176470588235) internal successors, (1741), 17 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:16,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:16,618 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:16,619 INFO L175 Difference]: Start difference. First operand has 203 places, 469 transitions, 5796 flow. Second operand 17 states and 1741 transitions. [2022-12-13 13:22:16,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 1227 transitions, 15259 flow [2022-12-13 13:22:17,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1227 transitions, 15182 flow, removed 38 selfloop flow, removed 1 redundant places. [2022-12-13 13:22:17,095 INFO L231 Difference]: Finished difference. Result has 228 places, 609 transitions, 8337 flow [2022-12-13 13:22:17,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=5735, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8337, PETRI_PLACES=228, PETRI_TRANSITIONS=609} [2022-12-13 13:22:17,096 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 172 predicate places. [2022-12-13 13:22:17,096 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 609 transitions, 8337 flow [2022-12-13 13:22:17,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 84.2258064516129) internal successors, (2611), 31 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:17,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:22:17,096 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:22:17,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 13:22:17,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 13:22:17,297 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:22:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:22:17,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1924504272, now seen corresponding path program 2 times [2022-12-13 13:22:17,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:22:17,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819214236] [2022-12-13 13:22:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:22:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:22:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:22:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:22:18,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:22:18,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819214236] [2022-12-13 13:22:18,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819214236] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:22:18,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630929812] [2022-12-13 13:22:18,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:22:18,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:22:18,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:22:18,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:22:18,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:22:18,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:22:18,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:22:18,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 13:22:18,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:22:18,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:22:18,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:22:18,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:22:18,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:22:18,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-13 13:22:18,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-12-13 13:22:18,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-12-13 13:22:18,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-12-13 13:22:18,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:22:18,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2022-12-13 13:22:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:22:26,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:22:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:22:46,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630929812] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:22:46,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:22:46,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 15] total 38 [2022-12-13 13:22:46,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20079728] [2022-12-13 13:22:46,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:22:46,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 13:22:46,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:22:46,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 13:22:46,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1248, Unknown=7, NotChecked=0, Total=1482 [2022-12-13 13:22:51,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:55,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:01,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:05,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:07,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:11,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:16,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:19,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:22,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:25,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:30,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:32,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:35,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:46,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:46,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 203 [2022-12-13 13:23:46,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 609 transitions, 8337 flow. Second operand has 39 states, 39 states have (on average 55.64102564102564) internal successors, (2170), 39 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:23:46,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:23:46,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 203 [2022-12-13 13:23:46,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:24:15,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:24:17,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:24:20,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:24:22,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:24:24,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:24:34,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:24:36,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:24:44,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:24:46,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:24:50,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:25:24,017 INFO L130 PetriNetUnfolder]: 21854/43860 cut-off events. [2022-12-13 13:25:24,017 INFO L131 PetriNetUnfolder]: For 349587/349587 co-relation queries the response was YES. [2022-12-13 13:25:24,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255421 conditions, 43860 events. 21854/43860 cut-off events. For 349587/349587 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 348253 event pairs, 3378 based on Foata normal form. 85/43479 useless extension candidates. Maximal degree in co-relation 255297. Up to 11263 conditions per place. [2022-12-13 13:25:24,478 INFO L137 encePairwiseOnDemand]: 181/203 looper letters, 2434 selfloop transitions, 514 changer transitions 2/2950 dead transitions. [2022-12-13 13:25:24,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 2950 transitions, 39334 flow [2022-12-13 13:25:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 13:25:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-13 13:25:24,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2681 transitions. [2022-12-13 13:25:24,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3668582375478927 [2022-12-13 13:25:24,483 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2681 transitions. [2022-12-13 13:25:24,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2681 transitions. [2022-12-13 13:25:24,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:25:24,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2681 transitions. [2022-12-13 13:25:24,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 74.47222222222223) internal successors, (2681), 36 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:24,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 203.0) internal successors, (7511), 37 states have internal predecessors, (7511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:24,492 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 203.0) internal successors, (7511), 37 states have internal predecessors, (7511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:24,492 INFO L175 Difference]: Start difference. First operand has 228 places, 609 transitions, 8337 flow. Second operand 36 states and 2681 transitions. [2022-12-13 13:25:24,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 2950 transitions, 39334 flow [2022-12-13 13:25:26,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 2950 transitions, 39055 flow, removed 99 selfloop flow, removed 3 redundant places. [2022-12-13 13:25:26,358 INFO L231 Difference]: Finished difference. Result has 285 places, 985 transitions, 16943 flow [2022-12-13 13:25:26,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=8221, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16943, PETRI_PLACES=285, PETRI_TRANSITIONS=985} [2022-12-13 13:25:26,359 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 229 predicate places. [2022-12-13 13:25:26,359 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 985 transitions, 16943 flow [2022-12-13 13:25:26,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 55.64102564102564) internal successors, (2170), 39 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:26,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:25:26,359 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 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] [2022-12-13 13:25:26,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:25:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 13:25:26,561 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:25:26,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:26,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1490889283, now seen corresponding path program 2 times [2022-12-13 13:25:26,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:26,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896150004] [2022-12-13 13:25:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:26,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:25:26,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:26,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896150004] [2022-12-13 13:25:26,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896150004] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:25:26,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727192940] [2022-12-13 13:25:26,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:25:26,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:25:26,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:25:26,997 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:25:26,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 13:25:27,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:25:27,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:25:27,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 13:25:27,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:25:27,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:25:27,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:25:27,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:25:27,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:25:27,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:25:27,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-13 13:25:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:25:27,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:25:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:25:34,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727192940] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:25:34,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:25:34,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-12-13 13:25:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496403006] [2022-12-13 13:25:34,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:25:34,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 13:25:34,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:34,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 13:25:34,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=741, Unknown=2, NotChecked=0, Total=930 [2022-12-13 13:25:36,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:38,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:41,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:44,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:45,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:48,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:52,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:55,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:57,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:58,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:00,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:03,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:05,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:09,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:10,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:12,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:14,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:17,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:20,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:23,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:25,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:30,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:32,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:32,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 203 [2022-12-13 13:26:32,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 985 transitions, 16943 flow. Second operand has 31 states, 31 states have (on average 55.32258064516129) internal successors, (1715), 31 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:26:32,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:26:32,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 203 [2022-12-13 13:26:32,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:26:59,647 INFO L130 PetriNetUnfolder]: 25827/51828 cut-off events. [2022-12-13 13:26:59,648 INFO L131 PetriNetUnfolder]: For 547290/547290 co-relation queries the response was YES. [2022-12-13 13:27:00,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328045 conditions, 51828 events. 25827/51828 cut-off events. For 547290/547290 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 428124 event pairs, 6221 based on Foata normal form. 106/51335 useless extension candidates. Maximal degree in co-relation 327896. Up to 25058 conditions per place. [2022-12-13 13:27:00,336 INFO L137 encePairwiseOnDemand]: 174/203 looper letters, 1485 selfloop transitions, 329 changer transitions 16/1830 dead transitions. [2022-12-13 13:27:00,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1830 transitions, 29661 flow [2022-12-13 13:27:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:27:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 13:27:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1267 transitions. [2022-12-13 13:27:00,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3900862068965517 [2022-12-13 13:27:00,339 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1267 transitions. [2022-12-13 13:27:00,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1267 transitions. [2022-12-13 13:27:00,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:27:00,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1267 transitions. [2022-12-13 13:27:00,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 79.1875) internal successors, (1267), 16 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:00,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 203.0) internal successors, (3451), 17 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:00,343 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 203.0) internal successors, (3451), 17 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:00,343 INFO L175 Difference]: Start difference. First operand has 285 places, 985 transitions, 16943 flow. Second operand 16 states and 1267 transitions. [2022-12-13 13:27:00,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1830 transitions, 29661 flow [2022-12-13 13:27:04,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1830 transitions, 28884 flow, removed 251 selfloop flow, removed 8 redundant places. [2022-12-13 13:27:04,457 INFO L231 Difference]: Finished difference. Result has 302 places, 1134 transitions, 19947 flow [2022-12-13 13:27:04,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=16354, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=985, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=19947, PETRI_PLACES=302, PETRI_TRANSITIONS=1134} [2022-12-13 13:27:04,458 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 246 predicate places. [2022-12-13 13:27:04,458 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 1134 transitions, 19947 flow [2022-12-13 13:27:04,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 55.32258064516129) internal successors, (1715), 31 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:04,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:27:04,459 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:27:04,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 13:27:04,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 13:27:04,660 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:27:04,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:04,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1725150668, now seen corresponding path program 1 times [2022-12-13 13:27:04,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:04,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759436907] [2022-12-13 13:27:04,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:04,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:27:05,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:05,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759436907] [2022-12-13 13:27:05,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759436907] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:27:05,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182479541] [2022-12-13 13:27:05,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:05,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:27:05,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:27:05,274 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:27:05,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 13:27:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:05,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 13:27:05,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:27:05,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:27:05,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:27:05,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:27:05,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:27:05,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:05,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:05,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:05,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:05,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-13 13:27:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:27:05,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:27:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:27:06,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182479541] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:27:06,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:27:06,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-12-13 13:27:06,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614516258] [2022-12-13 13:27:06,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:27:06,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 13:27:06,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:27:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 13:27:06,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2022-12-13 13:27:12,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 203 [2022-12-13 13:27:12,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 1134 transitions, 19947 flow. Second operand has 32 states, 32 states have (on average 93.75) internal successors, (3000), 32 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:12,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:27:12,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 203 [2022-12-13 13:27:12,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:27:41,588 INFO L130 PetriNetUnfolder]: 27054/59616 cut-off events. [2022-12-13 13:27:41,588 INFO L131 PetriNetUnfolder]: For 738753/741815 co-relation queries the response was YES. [2022-12-13 13:27:42,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391883 conditions, 59616 events. 27054/59616 cut-off events. For 738753/741815 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 541160 event pairs, 4494 based on Foata normal form. 394/59729 useless extension candidates. Maximal degree in co-relation 391725. Up to 26831 conditions per place. [2022-12-13 13:27:42,438 INFO L137 encePairwiseOnDemand]: 180/203 looper letters, 2226 selfloop transitions, 613 changer transitions 26/3082 dead transitions. [2022-12-13 13:27:42,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 3082 transitions, 48972 flow [2022-12-13 13:27:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 13:27:42,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-13 13:27:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 5258 transitions. [2022-12-13 13:27:42,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5180295566502463 [2022-12-13 13:27:42,444 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 5258 transitions. [2022-12-13 13:27:42,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 5258 transitions. [2022-12-13 13:27:42,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:27:42,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 5258 transitions. [2022-12-13 13:27:42,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 105.16) internal successors, (5258), 50 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:42,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 203.0) internal successors, (10353), 51 states have internal predecessors, (10353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:42,460 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 203.0) internal successors, (10353), 51 states have internal predecessors, (10353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:42,460 INFO L175 Difference]: Start difference. First operand has 302 places, 1134 transitions, 19947 flow. Second operand 50 states and 5258 transitions. [2022-12-13 13:27:42,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 3082 transitions, 48972 flow [2022-12-13 13:27:47,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 3082 transitions, 48243 flow, removed 225 selfloop flow, removed 5 redundant places. [2022-12-13 13:27:47,845 INFO L231 Difference]: Finished difference. Result has 385 places, 1671 transitions, 30311 flow [2022-12-13 13:27:47,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=19591, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=915, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=30311, PETRI_PLACES=385, PETRI_TRANSITIONS=1671} [2022-12-13 13:27:47,846 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 329 predicate places. [2022-12-13 13:27:47,846 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1671 transitions, 30311 flow [2022-12-13 13:27:47,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 93.75) internal successors, (3000), 32 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:47,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:27:47,847 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 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] [2022-12-13 13:27:47,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 13:27:48,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:27:48,048 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:27:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:27:48,049 INFO L85 PathProgramCache]: Analyzing trace with hash -308791433, now seen corresponding path program 3 times [2022-12-13 13:27:48,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:27:48,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729294305] [2022-12-13 13:27:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:27:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:27:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:27:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:27:48,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:27:48,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729294305] [2022-12-13 13:27:48,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729294305] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:27:48,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105148276] [2022-12-13 13:27:48,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:27:48,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:27:48,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:27:48,490 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:27:48,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 13:27:48,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 13:27:48,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:27:48,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 13:27:48,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:27:48,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:27:48,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:48,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:27:48,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:48,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:48,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:27:48,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:48,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:48,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:49,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:27:49,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:49,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:49,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:49,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:49,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:49,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:49,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:27:49,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-13 13:27:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:27:49,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:28:02,928 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:28:02,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105148276] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:28:02,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:28:02,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-12-13 13:28:02,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638084969] [2022-12-13 13:28:02,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:28:02,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 13:28:02,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 13:28:02,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=814, Unknown=6, NotChecked=0, Total=992 [2022-12-13 13:28:04,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:07,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:10,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:12,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:14,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:16,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:20,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:23,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:25,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:27,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:29,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:32,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:35,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:28:35,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 203 [2022-12-13 13:28:35,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1671 transitions, 30311 flow. Second operand has 32 states, 32 states have (on average 55.21875) internal successors, (1767), 32 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:35,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:35,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 203 [2022-12-13 13:28:35,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:29:36,396 INFO L130 PetriNetUnfolder]: 45231/90822 cut-off events. [2022-12-13 13:29:36,397 INFO L131 PetriNetUnfolder]: For 1465973/1465973 co-relation queries the response was YES. [2022-12-13 13:29:37,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673257 conditions, 90822 events. 45231/90822 cut-off events. For 1465973/1465973 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 811887 event pairs, 10907 based on Foata normal form. 108/89631 useless extension candidates. Maximal degree in co-relation 673060. Up to 49132 conditions per place. [2022-12-13 13:29:38,232 INFO L137 encePairwiseOnDemand]: 173/203 looper letters, 3264 selfloop transitions, 641 changer transitions 34/3939 dead transitions. [2022-12-13 13:29:38,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 3939 transitions, 66169 flow [2022-12-13 13:29:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 13:29:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 13:29:38,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2436 transitions. [2022-12-13 13:29:38,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2022-12-13 13:29:38,236 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2436 transitions. [2022-12-13 13:29:38,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2436 transitions. [2022-12-13 13:29:38,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:29:38,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2436 transitions. [2022-12-13 13:29:38,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 84.0) internal successors, (2436), 29 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:38,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 203.0) internal successors, (6090), 30 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:38,244 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 203.0) internal successors, (6090), 30 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:38,244 INFO L175 Difference]: Start difference. First operand has 385 places, 1671 transitions, 30311 flow. Second operand 29 states and 2436 transitions. [2022-12-13 13:29:38,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 3939 transitions, 66169 flow [2022-12-13 13:29:55,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 3939 transitions, 64752 flow, removed 708 selfloop flow, removed 1 redundant places. [2022-12-13 13:29:55,200 INFO L231 Difference]: Finished difference. Result has 432 places, 2148 transitions, 39743 flow [2022-12-13 13:29:55,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=29042, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=39743, PETRI_PLACES=432, PETRI_TRANSITIONS=2148} [2022-12-13 13:29:55,201 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 376 predicate places. [2022-12-13 13:29:55,201 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 2148 transitions, 39743 flow [2022-12-13 13:29:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 55.21875) internal successors, (1767), 32 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:55,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:29:55,202 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 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] [2022-12-13 13:29:55,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 13:29:55,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:55,403 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:29:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:55,404 INFO L85 PathProgramCache]: Analyzing trace with hash -679295675, now seen corresponding path program 4 times [2022-12-13 13:29:55,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:55,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456389070] [2022-12-13 13:29:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:55,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:29:55,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:55,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456389070] [2022-12-13 13:29:55,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456389070] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:55,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399330404] [2022-12-13 13:29:55,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:29:55,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:55,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:55,933 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:55,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 13:29:56,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:29:56,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:29:56,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 13:29:56,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:56,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:29:56,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:29:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:29:56,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:29:56,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:29:56,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-13 13:29:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:29:56,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:30:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:30:05,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399330404] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:30:05,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:30:05,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-12-13 13:30:05,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602204207] [2022-12-13 13:30:05,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:30:05,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 13:30:05,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:30:05,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 13:30:05,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=812, Unknown=1, NotChecked=0, Total=992 [2022-12-13 13:30:09,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:11,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:13,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:16,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:18,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:21,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:23,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:25,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:27,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:29,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:33,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:35,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:37,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:39,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:41,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:43,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:45,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:47,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:49,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:51,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:54,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:57,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:30:57,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 203 [2022-12-13 13:30:57,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 2148 transitions, 39743 flow. Second operand has 32 states, 32 states have (on average 55.21875) internal successors, (1767), 32 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:30:57,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:30:57,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 203 [2022-12-13 13:30:57,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:32:23,959 INFO L130 PetriNetUnfolder]: 56362/113212 cut-off events. [2022-12-13 13:32:23,959 INFO L131 PetriNetUnfolder]: For 2122940/2122940 co-relation queries the response was YES. [2022-12-13 13:32:26,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890454 conditions, 113212 events. 56362/113212 cut-off events. For 2122940/2122940 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 1058270 event pairs, 14258 based on Foata normal form. 108/111466 useless extension candidates. Maximal degree in co-relation 890236. Up to 54199 conditions per place. [2022-12-13 13:32:26,596 INFO L137 encePairwiseOnDemand]: 174/203 looper letters, 3440 selfloop transitions, 1189 changer transitions 32/4661 dead transitions. [2022-12-13 13:32:26,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 4661 transitions, 86395 flow [2022-12-13 13:32:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 13:32:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-13 13:32:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2441 transitions. [2022-12-13 13:32:26,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4008210180623974 [2022-12-13 13:32:26,600 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2441 transitions. [2022-12-13 13:32:26,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2441 transitions. [2022-12-13 13:32:26,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:32:26,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2441 transitions. [2022-12-13 13:32:26,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 81.36666666666666) internal successors, (2441), 30 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:32:26,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:32:26,609 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:32:26,609 INFO L175 Difference]: Start difference. First operand has 432 places, 2148 transitions, 39743 flow. Second operand 30 states and 2441 transitions. [2022-12-13 13:32:26,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 4661 transitions, 86395 flow [2022-12-13 13:33:04,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 4661 transitions, 85349 flow, removed 435 selfloop flow, removed 2 redundant places. [2022-12-13 13:33:04,593 INFO L231 Difference]: Finished difference. Result has 480 places, 2817 transitions, 57406 flow [2022-12-13 13:33:04,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=38982, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=57406, PETRI_PLACES=480, PETRI_TRANSITIONS=2817} [2022-12-13 13:33:04,595 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 424 predicate places. [2022-12-13 13:33:04,595 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 2817 transitions, 57406 flow [2022-12-13 13:33:04,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 55.21875) internal successors, (1767), 32 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:33:04,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:33:04,595 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:33:04,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 13:33:04,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 13:33:04,796 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 13:33:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:33:04,797 INFO L85 PathProgramCache]: Analyzing trace with hash -40058786, now seen corresponding path program 1 times [2022-12-13 13:33:04,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:33:04,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320075361] [2022-12-13 13:33:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:04,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:33:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:33:05,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:33:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320075361] [2022-12-13 13:33:05,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320075361] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:33:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389843064] [2022-12-13 13:33:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:05,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:33:05,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:33:05,277 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:33:05,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfd8238-e91c-45cc-9fac-cde211f2f7f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 13:33:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:05,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 13:33:05,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:33:05,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:33:05,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:33:05,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:33:05,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 13:33:05,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:05,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-13 13:33:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:33:05,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:33:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 13:33:06,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389843064] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:33:06,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:33:06,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-12-13 13:33:06,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867089] [2022-12-13 13:33:06,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:33:06,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 13:33:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:33:06,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 13:33:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-12-13 13:33:15,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 203 [2022-12-13 13:33:15,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 2817 transitions, 57406 flow. Second operand has 32 states, 32 states have (on average 93.28125) internal successors, (2985), 32 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:33:15,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:33:15,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 203 [2022-12-13 13:33:15,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand