./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_20-arrayloop2_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_20-arrayloop2_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ffb6ed4cf93a465c15dff37fbdc82f2f1bfe68c16d8d908373acd9cd0f46e43 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:00:00,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:00:00,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:00:00,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:00:00,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:00:00,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:00:00,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:00:00,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:00:00,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:00:00,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:00:00,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:00:00,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:00:00,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:00:00,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:00:00,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:00:00,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:00:00,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:00:00,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:00:00,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:00:00,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:00:00,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:00:00,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:00:00,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:00:00,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:00:00,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:00:00,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:00:00,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:00:00,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:00:00,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:00:00,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:00:00,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:00:00,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:00:00,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:00:00,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:00:00,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:00:00,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:00:00,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:00:00,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:00:00,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:00:00,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:00:00,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:00:00,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 21:00:00,187 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:00:00,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:00:00,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:00:00,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:00:00,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:00:00,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:00:00,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:00:00,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:00:00,195 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:00:00,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:00:00,196 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:00:00,197 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:00:00,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:00:00,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:00:00,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:00:00,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:00:00,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:00:00,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:00:00,198 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 21:00:00,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:00:00,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:00:00,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:00:00,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:00:00,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:00:00,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:00:00,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:00:00,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:00,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:00:00,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:00:00,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:00:00,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:00:00,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:00:00,202 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:00:00,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:00:00,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:00:00,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ffb6ed4cf93a465c15dff37fbdc82f2f1bfe68c16d8d908373acd9cd0f46e43 [2022-11-02 21:00:00,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:00:00,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:00:00,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:00:00,586 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:00:00,587 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:00:00,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/09-regions_20-arrayloop2_rc.i [2022-11-02 21:00:00,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/data/b0bafdd8c/5a9fc71838cd42ab946eb2e1ecab9e0b/FLAGb5895a10f [2022-11-02 21:00:01,263 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:00:01,264 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/sv-benchmarks/c/goblint-regression/09-regions_20-arrayloop2_rc.i [2022-11-02 21:00:01,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/data/b0bafdd8c/5a9fc71838cd42ab946eb2e1ecab9e0b/FLAGb5895a10f [2022-11-02 21:00:01,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/data/b0bafdd8c/5a9fc71838cd42ab946eb2e1ecab9e0b [2022-11-02 21:00:01,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:00:01,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:00:01,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:01,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:00:01,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:00:01,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7d99a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01, skipping insertion in model container [2022-11-02 21:00:01,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:00:01,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:00:02,124 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:00:02,125 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:00:02,130 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:00:02,134 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:00:02,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:02,183 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:00:02,215 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:00:02,216 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:00:02,217 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:00:02,218 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:00:02,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:02,295 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:00:02,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02 WrapperNode [2022-11-02 21:00:02,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:02,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:02,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:00:02,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:00:02,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,403 INFO L138 Inliner]: procedures = 272, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 269 [2022-11-02 21:00:02,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:02,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:00:02,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:00:02,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:00:02,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:00:02,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:00:02,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:00:02,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:00:02,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (1/1) ... [2022-11-02 21:00:02,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:02,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:02,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:00:02,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:00:02,597 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-02 21:00:02,598 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-02 21:00:02,598 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-11-02 21:00:02,598 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-11-02 21:00:02,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:00:02,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 21:00:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:00:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:00:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:00:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 21:00:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:00:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:00:02,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 21:00:02,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:00:02,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:00:02,601 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:00:02,838 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:00:02,848 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:00:03,517 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:00:03,527 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:00:03,527 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 21:00:03,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:03 BoogieIcfgContainer [2022-11-02 21:00:03,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:00:03,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:00:03,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:00:03,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:00:03,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:00:01" (1/3) ... [2022-11-02 21:00:03,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a53286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:03, skipping insertion in model container [2022-11-02 21:00:03,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:02" (2/3) ... [2022-11-02 21:00:03,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a53286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:03, skipping insertion in model container [2022-11-02 21:00:03,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:03" (3/3) ... [2022-11-02 21:00:03,539 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_20-arrayloop2_rc.i [2022-11-02 21:00:03,548 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:00:03,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:00:03,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-02 21:00:03,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:00:03,661 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:00:03,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 305 transitions, 620 flow [2022-11-02 21:00:03,855 INFO L130 PetriNetUnfolder]: 14/303 cut-off events. [2022-11-02 21:00:03,855 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:00:03,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 303 events. 14/303 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 587 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 226. Up to 2 conditions per place. [2022-11-02 21:00:03,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 305 transitions, 620 flow [2022-11-02 21:00:03,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 303 transitions, 612 flow [2022-11-02 21:00:03,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:03,907 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;@7d121150, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:03,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-02 21:00:03,919 INFO L130 PetriNetUnfolder]: 1/48 cut-off events. [2022-11-02 21:00:03,919 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:00:03,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:03,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:03,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:03,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1073243934, now seen corresponding path program 1 times [2022-11-02 21:00:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:03,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785618071] [2022-11-02 21:00:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:03,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:04,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785618071] [2022-11-02 21:00:04,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785618071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:04,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:04,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:04,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991649977] [2022-11-02 21:00:04,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:04,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:04,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:04,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:04,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:04,782 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 305 [2022-11-02 21:00:04,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 303 transitions, 612 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:04,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:04,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 305 [2022-11-02 21:00:04,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:05,841 INFO L130 PetriNetUnfolder]: 744/2618 cut-off events. [2022-11-02 21:00:05,841 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-02 21:00:05,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 2618 events. 744/2618 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17661 event pairs, 600 based on Foata normal form. 247/2494 useless extension candidates. Maximal degree in co-relation 3898. Up to 1439 conditions per place. [2022-11-02 21:00:05,869 INFO L137 encePairwiseOnDemand]: 285/305 looper letters, 110 selfloop transitions, 10 changer transitions 0/293 dead transitions. [2022-11-02 21:00:05,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 293 transitions, 832 flow [2022-11-02 21:00:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2022-11-02 21:00:05,887 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.644808743169399 [2022-11-02 21:00:05,888 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2022-11-02 21:00:05,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2022-11-02 21:00:05,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:05,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2022-11-02 21:00:05,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:05,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:05,912 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:05,915 INFO L175 Difference]: Start difference. First operand has 296 places, 303 transitions, 612 flow. Second operand 6 states and 1180 transitions. [2022-11-02 21:00:05,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 293 transitions, 832 flow [2022-11-02 21:00:05,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 293 transitions, 830 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:00:05,928 INFO L231 Difference]: Finished difference. Result has 297 places, 293 transitions, 610 flow [2022-11-02 21:00:05,930 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=297, PETRI_TRANSITIONS=293} [2022-11-02 21:00:05,934 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 1 predicate places. [2022-11-02 21:00:05,935 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 293 transitions, 610 flow [2022-11-02 21:00:05,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:05,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:05,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:05,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:00:05,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:05,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1014354873, now seen corresponding path program 1 times [2022-11-02 21:00:05,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:05,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220168871] [2022-11-02 21:00:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:05,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:06,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:06,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220168871] [2022-11-02 21:00:06,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220168871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:06,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:06,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73202307] [2022-11-02 21:00:06,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:06,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:06,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:06,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:06,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:06,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 305 [2022-11-02 21:00:06,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 293 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:06,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:06,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 305 [2022-11-02 21:00:06,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:07,240 INFO L130 PetriNetUnfolder]: 744/2616 cut-off events. [2022-11-02 21:00:07,240 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:00:07,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 2616 events. 744/2616 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17656 event pairs, 600 based on Foata normal form. 0/2247 useless extension candidates. Maximal degree in co-relation 3931. Up to 1437 conditions per place. [2022-11-02 21:00:07,264 INFO L137 encePairwiseOnDemand]: 293/305 looper letters, 108 selfloop transitions, 10 changer transitions 0/291 dead transitions. [2022-11-02 21:00:07,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 291 transitions, 842 flow [2022-11-02 21:00:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1170 transitions. [2022-11-02 21:00:07,268 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2022-11-02 21:00:07,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1170 transitions. [2022-11-02 21:00:07,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1170 transitions. [2022-11-02 21:00:07,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:07,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1170 transitions. [2022-11-02 21:00:07,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,278 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,278 INFO L175 Difference]: Start difference. First operand has 297 places, 293 transitions, 610 flow. Second operand 6 states and 1170 transitions. [2022-11-02 21:00:07,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 291 transitions, 842 flow [2022-11-02 21:00:07,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 291 transitions, 822 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:00:07,288 INFO L231 Difference]: Finished difference. Result has 295 places, 291 transitions, 606 flow [2022-11-02 21:00:07,289 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=295, PETRI_TRANSITIONS=291} [2022-11-02 21:00:07,290 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, -1 predicate places. [2022-11-02 21:00:07,290 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 291 transitions, 606 flow [2022-11-02 21:00:07,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:07,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:07,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:00:07,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1869934470, now seen corresponding path program 1 times [2022-11-02 21:00:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:07,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328408487] [2022-11-02 21:00:07,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:07,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:07,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:07,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328408487] [2022-11-02 21:00:07,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328408487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:07,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:07,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:07,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866158484] [2022-11-02 21:00:07,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:07,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:07,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:07,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:07,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:07,382 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 305 [2022-11-02 21:00:07,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 291 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:07,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 305 [2022-11-02 21:00:07,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:07,485 INFO L130 PetriNetUnfolder]: 7/415 cut-off events. [2022-11-02 21:00:07,485 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:00:07,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 415 events. 7/415 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1028 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 218. Up to 13 conditions per place. [2022-11-02 21:00:07,490 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 17 selfloop transitions, 2 changer transitions 0/298 dead transitions. [2022-11-02 21:00:07,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 298 transitions, 658 flow [2022-11-02 21:00:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:00:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2022-11-02 21:00:07,494 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9562841530054644 [2022-11-02 21:00:07,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2022-11-02 21:00:07,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2022-11-02 21:00:07,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:07,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2022-11-02 21:00:07,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,501 INFO L175 Difference]: Start difference. First operand has 295 places, 291 transitions, 606 flow. Second operand 3 states and 875 transitions. [2022-11-02 21:00:07,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 298 transitions, 658 flow [2022-11-02 21:00:07,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 298 transitions, 638 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:00:07,509 INFO L231 Difference]: Finished difference. Result has 293 places, 292 transitions, 598 flow [2022-11-02 21:00:07,510 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=598, PETRI_PLACES=293, PETRI_TRANSITIONS=292} [2022-11-02 21:00:07,514 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, -3 predicate places. [2022-11-02 21:00:07,515 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 292 transitions, 598 flow [2022-11-02 21:00:07,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:07,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:07,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:00:07,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:07,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1725803836, now seen corresponding path program 1 times [2022-11-02 21:00:07,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:07,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301579923] [2022-11-02 21:00:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:07,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:07,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:07,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105453572] [2022-11-02 21:00:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:07,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:07,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:07,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:07,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:00:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:07,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 21:00:07,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:07,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:00:07,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:07,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:00:07,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:07,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:07,951 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:07,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 21:00:07,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:07,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:07,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:07,998 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:07,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 21:00:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:08,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:08,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:08,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301579923] [2022-11-02 21:00:08,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:08,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105453572] [2022-11-02 21:00:08,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105453572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:08,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:08,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:08,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664184340] [2022-11-02 21:00:08,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:08,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:08,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:08,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:08,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:08,032 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 305 [2022-11-02 21:00:08,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 292 transitions, 598 flow. Second operand has 8 states, 8 states have (on average 180.625) internal successors, (1445), 8 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:08,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:08,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 305 [2022-11-02 21:00:08,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:09,756 INFO L130 PetriNetUnfolder]: 1489/5255 cut-off events. [2022-11-02 21:00:09,756 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:00:09,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8268 conditions, 5255 events. 1489/5255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 35843 event pairs, 1200 based on Foata normal form. 0/4523 useless extension candidates. Maximal degree in co-relation 4106. Up to 1480 conditions per place. [2022-11-02 21:00:09,801 INFO L137 encePairwiseOnDemand]: 295/305 looper letters, 166 selfloop transitions, 9 changer transitions 0/352 dead transitions. [2022-11-02 21:00:09,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 352 transitions, 1072 flow [2022-11-02 21:00:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:00:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:00:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1778 transitions. [2022-11-02 21:00:09,806 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6477231329690346 [2022-11-02 21:00:09,806 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1778 transitions. [2022-11-02 21:00:09,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1778 transitions. [2022-11-02 21:00:09,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:09,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1778 transitions. [2022-11-02 21:00:09,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 197.55555555555554) internal successors, (1778), 9 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:09,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:09,820 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:09,820 INFO L175 Difference]: Start difference. First operand has 293 places, 292 transitions, 598 flow. Second operand 9 states and 1778 transitions. [2022-11-02 21:00:09,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 352 transitions, 1072 flow [2022-11-02 21:00:09,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 352 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:00:09,829 INFO L231 Difference]: Finished difference. Result has 300 places, 292 transitions, 620 flow [2022-11-02 21:00:09,829 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=620, PETRI_PLACES=300, PETRI_TRANSITIONS=292} [2022-11-02 21:00:09,831 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 4 predicate places. [2022-11-02 21:00:09,831 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 292 transitions, 620 flow [2022-11-02 21:00:09,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.625) internal successors, (1445), 8 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:09,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:09,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:09,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:00:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:10,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash -357473874, now seen corresponding path program 1 times [2022-11-02 21:00:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:10,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060623531] [2022-11-02 21:00:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:10,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:10,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:10,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060623531] [2022-11-02 21:00:10,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060623531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:10,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:10,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403523198] [2022-11-02 21:00:10,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:10,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:10,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:10,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:10,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:10,162 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 305 [2022-11-02 21:00:10,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 292 transitions, 620 flow. Second operand has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:10,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:10,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 305 [2022-11-02 21:00:10,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:10,263 INFO L130 PetriNetUnfolder]: 7/603 cut-off events. [2022-11-02 21:00:10,263 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:00:10,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 603 events. 7/603 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1016 event pairs, 0 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 282. Up to 16 conditions per place. [2022-11-02 21:00:10,267 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 11 selfloop transitions, 2 changer transitions 0/296 dead transitions. [2022-11-02 21:00:10,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 296 transitions, 654 flow [2022-11-02 21:00:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:10,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:00:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2022-11-02 21:00:10,269 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9595628415300547 [2022-11-02 21:00:10,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2022-11-02 21:00:10,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2022-11-02 21:00:10,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:10,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2022-11-02 21:00:10,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:10,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:10,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:10,275 INFO L175 Difference]: Start difference. First operand has 300 places, 292 transitions, 620 flow. Second operand 3 states and 878 transitions. [2022-11-02 21:00:10,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 296 transitions, 654 flow [2022-11-02 21:00:10,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 296 transitions, 640 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-02 21:00:10,281 INFO L231 Difference]: Finished difference. Result has 296 places, 293 transitions, 618 flow [2022-11-02 21:00:10,282 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=296, PETRI_TRANSITIONS=293} [2022-11-02 21:00:10,282 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 0 predicate places. [2022-11-02 21:00:10,283 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 293 transitions, 618 flow [2022-11-02 21:00:10,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:10,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:10,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:10,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:00:10,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -708711087, now seen corresponding path program 1 times [2022-11-02 21:00:10,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:10,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587005314] [2022-11-02 21:00:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:10,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:10,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078554289] [2022-11-02 21:00:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:10,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:10,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:10,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:10,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:00:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:00:10,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:10,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:00:10,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:00:10,561 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:10,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 21:00:10,591 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:10,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 21:00:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:10,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:10,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:10,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587005314] [2022-11-02 21:00:10,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:10,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078554289] [2022-11-02 21:00:10,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078554289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:10,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:10,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:10,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894057893] [2022-11-02 21:00:10,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:10,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:10,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:10,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:10,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:10,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 305 [2022-11-02 21:00:10,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 293 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:10,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:10,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 305 [2022-11-02 21:00:10,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:11,830 INFO L130 PetriNetUnfolder]: 745/2924 cut-off events. [2022-11-02 21:00:11,830 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 21:00:11,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4606 conditions, 2924 events. 745/2924 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18357 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4095. Up to 1575 conditions per place. [2022-11-02 21:00:11,861 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 104 selfloop transitions, 5 changer transitions 0/292 dead transitions. [2022-11-02 21:00:11,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 292 transitions, 834 flow [2022-11-02 21:00:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2022-11-02 21:00:11,865 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6568306010928961 [2022-11-02 21:00:11,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2022-11-02 21:00:11,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2022-11-02 21:00:11,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:11,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2022-11-02 21:00:11,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:11,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:11,876 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:11,876 INFO L175 Difference]: Start difference. First operand has 296 places, 293 transitions, 618 flow. Second operand 6 states and 1202 transitions. [2022-11-02 21:00:11,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 292 transitions, 834 flow [2022-11-02 21:00:11,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 292 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:00:11,885 INFO L231 Difference]: Finished difference. Result has 299 places, 292 transitions, 624 flow [2022-11-02 21:00:11,885 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=299, PETRI_TRANSITIONS=292} [2022-11-02 21:00:11,886 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 3 predicate places. [2022-11-02 21:00:11,887 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 292 transitions, 624 flow [2022-11-02 21:00:11,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:11,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:11,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:11,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:12,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 21:00:12,103 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:12,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1604782190, now seen corresponding path program 1 times [2022-11-02 21:00:12,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:12,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140829277] [2022-11-02 21:00:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:12,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:12,136 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:12,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814130323] [2022-11-02 21:00:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:12,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:12,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:12,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:12,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:00:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:12,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:00:12,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:12,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:00:12,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 21:00:12,410 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:12,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-02 21:00:12,445 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:12,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-02 21:00:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:12,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:12,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:12,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140829277] [2022-11-02 21:00:12,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:12,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814130323] [2022-11-02 21:00:12,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814130323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:12,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:12,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:12,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563508267] [2022-11-02 21:00:12,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:12,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:12,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:12,496 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 305 [2022-11-02 21:00:12,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 292 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:12,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:12,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 305 [2022-11-02 21:00:12,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:13,293 INFO L130 PetriNetUnfolder]: 745/2920 cut-off events. [2022-11-02 21:00:13,293 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 21:00:13,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 2920 events. 745/2920 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18464 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4144. Up to 1575 conditions per place. [2022-11-02 21:00:13,325 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 104 selfloop transitions, 5 changer transitions 0/291 dead transitions. [2022-11-02 21:00:13,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 291 transitions, 840 flow [2022-11-02 21:00:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:13,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2022-11-02 21:00:13,330 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.653551912568306 [2022-11-02 21:00:13,330 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2022-11-02 21:00:13,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2022-11-02 21:00:13,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:13,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2022-11-02 21:00:13,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:13,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:13,340 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:13,340 INFO L175 Difference]: Start difference. First operand has 299 places, 292 transitions, 624 flow. Second operand 6 states and 1196 transitions. [2022-11-02 21:00:13,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 291 transitions, 840 flow [2022-11-02 21:00:13,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 291 transitions, 830 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:00:13,349 INFO L231 Difference]: Finished difference. Result has 298 places, 291 transitions, 622 flow [2022-11-02 21:00:13,350 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=622, PETRI_PLACES=298, PETRI_TRANSITIONS=291} [2022-11-02 21:00:13,350 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 2 predicate places. [2022-11-02 21:00:13,351 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 291 transitions, 622 flow [2022-11-02 21:00:13,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:13,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:13,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:13,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 21:00:13,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -816700385, now seen corresponding path program 1 times [2022-11-02 21:00:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:13,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494538056] [2022-11-02 21:00:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:13,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:13,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:13,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587485315] [2022-11-02 21:00:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:13,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:13,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:13,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:13,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:00:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:00:13,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:13,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:00:13,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:00:13,897 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:13,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 21:00:13,926 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:13,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 21:00:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:13,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:13,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:13,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494538056] [2022-11-02 21:00:13,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:13,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587485315] [2022-11-02 21:00:13,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587485315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:13,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:13,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753778834] [2022-11-02 21:00:13,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:13,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:13,956 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-02 21:00:13,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 291 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:13,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:13,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-02 21:00:13,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:14,825 INFO L130 PetriNetUnfolder]: 745/2916 cut-off events. [2022-11-02 21:00:14,825 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 21:00:14,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 2916 events. 745/2916 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18390 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4168. Up to 1579 conditions per place. [2022-11-02 21:00:14,851 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 105 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-02 21:00:14,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 290 transitions, 840 flow [2022-11-02 21:00:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1185 transitions. [2022-11-02 21:00:14,856 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6475409836065574 [2022-11-02 21:00:14,856 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1185 transitions. [2022-11-02 21:00:14,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1185 transitions. [2022-11-02 21:00:14,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:14,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1185 transitions. [2022-11-02 21:00:14,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.5) internal successors, (1185), 6 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:14,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:14,864 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:14,864 INFO L175 Difference]: Start difference. First operand has 298 places, 291 transitions, 622 flow. Second operand 6 states and 1185 transitions. [2022-11-02 21:00:14,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 290 transitions, 840 flow [2022-11-02 21:00:14,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 290 transitions, 830 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:00:14,871 INFO L231 Difference]: Finished difference. Result has 297 places, 290 transitions, 620 flow [2022-11-02 21:00:14,872 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=620, PETRI_PLACES=297, PETRI_TRANSITIONS=290} [2022-11-02 21:00:14,872 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 1 predicate places. [2022-11-02 21:00:14,872 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 290 transitions, 620 flow [2022-11-02 21:00:14,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:14,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:14,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:14,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 21:00:15,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:15,087 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1731778026, now seen corresponding path program 1 times [2022-11-02 21:00:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:15,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912334816] [2022-11-02 21:00:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:15,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:15,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077636323] [2022-11-02 21:00:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:15,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:15,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:15,123 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:15,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:00:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:00:15,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:15,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:00:15,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 21:00:15,440 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:15,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-02 21:00:15,468 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:15,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-02 21:00:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:15,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:15,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912334816] [2022-11-02 21:00:15,493 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:15,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077636323] [2022-11-02 21:00:15,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077636323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:15,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:15,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677418324] [2022-11-02 21:00:15,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:15,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:15,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:15,497 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-02 21:00:15,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 290 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:15,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:15,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-02 21:00:15,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:16,484 INFO L130 PetriNetUnfolder]: 745/2912 cut-off events. [2022-11-02 21:00:16,484 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 21:00:16,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4612 conditions, 2912 events. 745/2912 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18259 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4180. Up to 1575 conditions per place. [2022-11-02 21:00:16,517 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 104 selfloop transitions, 5 changer transitions 0/289 dead transitions. [2022-11-02 21:00:16,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 289 transitions, 836 flow [2022-11-02 21:00:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1184 transitions. [2022-11-02 21:00:16,522 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6469945355191257 [2022-11-02 21:00:16,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1184 transitions. [2022-11-02 21:00:16,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1184 transitions. [2022-11-02 21:00:16,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:16,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1184 transitions. [2022-11-02 21:00:16,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.33333333333334) internal successors, (1184), 6 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:16,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:16,534 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:16,534 INFO L175 Difference]: Start difference. First operand has 297 places, 290 transitions, 620 flow. Second operand 6 states and 1184 transitions. [2022-11-02 21:00:16,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 289 transitions, 836 flow [2022-11-02 21:00:16,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 289 transitions, 826 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:00:16,543 INFO L231 Difference]: Finished difference. Result has 296 places, 289 transitions, 618 flow [2022-11-02 21:00:16,543 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=618, PETRI_PLACES=296, PETRI_TRANSITIONS=289} [2022-11-02 21:00:16,544 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 0 predicate places. [2022-11-02 21:00:16,544 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 289 transitions, 618 flow [2022-11-02 21:00:16,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:16,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:16,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:16,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:16,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 21:00:16,763 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:16,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1104022034, now seen corresponding path program 1 times [2022-11-02 21:00:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:16,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194324600] [2022-11-02 21:00:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:16,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:16,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779593727] [2022-11-02 21:00:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:16,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:16,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:16,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:16,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:00:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:17,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:00:17,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:17,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:00:17,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:00:17,107 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:17,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 21:00:17,136 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:17,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 21:00:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:17,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:17,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:17,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194324600] [2022-11-02 21:00:17,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:17,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779593727] [2022-11-02 21:00:17,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779593727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:17,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:17,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521828998] [2022-11-02 21:00:17,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:17,168 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 305 [2022-11-02 21:00:17,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 289 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:17,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:17,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 305 [2022-11-02 21:00:17,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:18,282 INFO L130 PetriNetUnfolder]: 745/2908 cut-off events. [2022-11-02 21:00:18,282 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 21:00:18,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 2908 events. 745/2908 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18240 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4190. Up to 1567 conditions per place. [2022-11-02 21:00:18,302 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 102 selfloop transitions, 5 changer transitions 0/288 dead transitions. [2022-11-02 21:00:18,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 288 transitions, 830 flow [2022-11-02 21:00:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2022-11-02 21:00:18,306 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6491803278688525 [2022-11-02 21:00:18,306 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1188 transitions. [2022-11-02 21:00:18,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1188 transitions. [2022-11-02 21:00:18,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:18,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1188 transitions. [2022-11-02 21:00:18,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:18,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:18,315 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:18,315 INFO L175 Difference]: Start difference. First operand has 296 places, 289 transitions, 618 flow. Second operand 6 states and 1188 transitions. [2022-11-02 21:00:18,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 288 transitions, 830 flow [2022-11-02 21:00:18,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 288 transitions, 820 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:00:18,322 INFO L231 Difference]: Finished difference. Result has 295 places, 288 transitions, 616 flow [2022-11-02 21:00:18,322 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=616, PETRI_PLACES=295, PETRI_TRANSITIONS=288} [2022-11-02 21:00:18,323 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, -1 predicate places. [2022-11-02 21:00:18,323 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 288 transitions, 616 flow [2022-11-02 21:00:18,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:18,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:18,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:18,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:18,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:18,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:18,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash 957281394, now seen corresponding path program 1 times [2022-11-02 21:00:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:18,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443725528] [2022-11-02 21:00:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:18,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:18,588 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:18,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156782489] [2022-11-02 21:00:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:18,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:18,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:18,590 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:18,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:00:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:18,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:00:18,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:19,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:19,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:19,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443725528] [2022-11-02 21:00:19,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:19,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156782489] [2022-11-02 21:00:19,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156782489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:19,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:19,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 21:00:19,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441240930] [2022-11-02 21:00:19,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:19,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:19,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:19,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:19,203 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-02 21:00:19,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 288 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 289.0) internal successors, (2312), 8 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:19,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:19,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-02 21:00:19,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:19,383 INFO L130 PetriNetUnfolder]: 7/769 cut-off events. [2022-11-02 21:00:19,383 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:00:19,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 769 events. 7/769 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 4/759 useless extension candidates. Maximal degree in co-relation 351. Up to 13 conditions per place. [2022-11-02 21:00:19,386 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 12 selfloop transitions, 9 changer transitions 0/298 dead transitions. [2022-11-02 21:00:19,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 298 transitions, 680 flow [2022-11-02 21:00:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:00:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:00:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2606 transitions. [2022-11-02 21:00:19,391 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9493624772313297 [2022-11-02 21:00:19,391 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2606 transitions. [2022-11-02 21:00:19,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2606 transitions. [2022-11-02 21:00:19,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:19,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2606 transitions. [2022-11-02 21:00:19,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 289.55555555555554) internal successors, (2606), 9 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:19,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:19,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:19,406 INFO L175 Difference]: Start difference. First operand has 295 places, 288 transitions, 616 flow. Second operand 9 states and 2606 transitions. [2022-11-02 21:00:19,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 298 transitions, 680 flow [2022-11-02 21:00:19,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 298 transitions, 670 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:00:19,416 INFO L231 Difference]: Finished difference. Result has 301 places, 294 transitions, 656 flow [2022-11-02 21:00:19,416 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=301, PETRI_TRANSITIONS=294} [2022-11-02 21:00:19,417 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 5 predicate places. [2022-11-02 21:00:19,417 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 294 transitions, 656 flow [2022-11-02 21:00:19,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 289.0) internal successors, (2312), 8 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:19,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:19,419 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:19,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:19,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:19,634 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:19,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1922498830, now seen corresponding path program 2 times [2022-11-02 21:00:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:19,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385658396] [2022-11-02 21:00:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:19,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:19,709 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:19,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775853808] [2022-11-02 21:00:19,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:00:19,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:19,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:19,710 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:19,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:00:20,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:00:20,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:20,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:00:20,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:20,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 21:00:20,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-02 21:00:20,069 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:20,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-02 21:00:20,096 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:20,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-02 21:00:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-02 21:00:20,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:20,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:20,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385658396] [2022-11-02 21:00:20,122 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:20,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775853808] [2022-11-02 21:00:20,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775853808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:20,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:20,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:20,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033270085] [2022-11-02 21:00:20,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:20,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:20,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:20,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:20,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:20,125 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 305 [2022-11-02 21:00:20,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 294 transitions, 656 flow. Second operand has 6 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:20,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:20,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 305 [2022-11-02 21:00:20,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:22,038 INFO L130 PetriNetUnfolder]: 1693/4827 cut-off events. [2022-11-02 21:00:22,038 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 21:00:22,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8518 conditions, 4827 events. 1693/4827 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 31814 event pairs, 775 based on Foata normal form. 0/4218 useless extension candidates. Maximal degree in co-relation 7866. Up to 2615 conditions per place. [2022-11-02 21:00:22,093 INFO L137 encePairwiseOnDemand]: 293/305 looper letters, 235 selfloop transitions, 23 changer transitions 0/430 dead transitions. [2022-11-02 21:00:22,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 430 transitions, 1452 flow [2022-11-02 21:00:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1249 transitions. [2022-11-02 21:00:22,097 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6825136612021858 [2022-11-02 21:00:22,097 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1249 transitions. [2022-11-02 21:00:22,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1249 transitions. [2022-11-02 21:00:22,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:22,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1249 transitions. [2022-11-02 21:00:22,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.16666666666666) internal successors, (1249), 6 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:22,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:22,106 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:22,106 INFO L175 Difference]: Start difference. First operand has 301 places, 294 transitions, 656 flow. Second operand 6 states and 1249 transitions. [2022-11-02 21:00:22,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 430 transitions, 1452 flow [2022-11-02 21:00:22,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 430 transitions, 1446 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 21:00:22,116 INFO L231 Difference]: Finished difference. Result has 310 places, 316 transitions, 808 flow [2022-11-02 21:00:22,117 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=808, PETRI_PLACES=310, PETRI_TRANSITIONS=316} [2022-11-02 21:00:22,119 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 14 predicate places. [2022-11-02 21:00:22,119 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 316 transitions, 808 flow [2022-11-02 21:00:22,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:22,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:22,120 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:22,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:22,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:22,343 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting gErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:22,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:22,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1620689595, now seen corresponding path program 1 times [2022-11-02 21:00:22,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:22,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602542699] [2022-11-02 21:00:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:22,408 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:22,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576149718] [2022-11-02 21:00:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:22,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:22,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:22,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:22,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:00:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:22,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:00:22,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:23,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:23,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:23,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602542699] [2022-11-02 21:00:23,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:23,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576149718] [2022-11-02 21:00:23,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576149718] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:23,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:23,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:00:23,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296989355] [2022-11-02 21:00:23,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:23,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:00:23,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:23,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:00:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:00:23,948 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-02 21:00:23,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 316 transitions, 808 flow. Second operand has 16 states, 16 states have (on average 289.3125) internal successors, (4629), 16 states have internal predecessors, (4629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:23,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:23,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-02 21:00:23,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:24,716 INFO L130 PetriNetUnfolder]: 63/2046 cut-off events. [2022-11-02 21:00:24,716 INFO L131 PetriNetUnfolder]: For 89/94 co-relation queries the response was YES. [2022-11-02 21:00:24,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 2046 events. 63/2046 cut-off events. For 89/94 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4295 event pairs, 8 based on Foata normal form. 8/1978 useless extension candidates. Maximal degree in co-relation 1950. Up to 65 conditions per place. [2022-11-02 21:00:24,727 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 20 selfloop transitions, 21 changer transitions 0/340 dead transitions. [2022-11-02 21:00:24,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 340 transitions, 990 flow [2022-11-02 21:00:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:00:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 21:00:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6072 transitions. [2022-11-02 21:00:24,739 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9480093676814988 [2022-11-02 21:00:24,739 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6072 transitions. [2022-11-02 21:00:24,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6072 transitions. [2022-11-02 21:00:24,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:24,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6072 transitions. [2022-11-02 21:00:24,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 289.14285714285717) internal successors, (6072), 21 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:24,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:24,769 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:24,770 INFO L175 Difference]: Start difference. First operand has 310 places, 316 transitions, 808 flow. Second operand 21 states and 6072 transitions. [2022-11-02 21:00:24,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 340 transitions, 990 flow [2022-11-02 21:00:24,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 340 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:00:24,778 INFO L231 Difference]: Finished difference. Result has 335 places, 329 transitions, 938 flow [2022-11-02 21:00:24,779 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=938, PETRI_PLACES=335, PETRI_TRANSITIONS=329} [2022-11-02 21:00:24,779 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 39 predicate places. [2022-11-02 21:00:24,780 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 329 transitions, 938 flow [2022-11-02 21:00:24,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 289.3125) internal successors, (4629), 16 states have internal predecessors, (4629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:24,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:24,782 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:24,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:25,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:25,007 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting gErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:25,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1234139067, now seen corresponding path program 2 times [2022-11-02 21:00:25,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:25,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483881488] [2022-11-02 21:00:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:25,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:25,148 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:25,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053260972] [2022-11-02 21:00:25,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:00:25,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:25,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:25,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:25,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:00:25,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:00:25,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:25,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:00:25,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:25,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 21:00:25,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-02 21:00:25,758 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:25,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-02 21:00:25,784 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:25,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-02 21:00:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-02 21:00:25,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:25,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:25,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483881488] [2022-11-02 21:00:25,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:25,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053260972] [2022-11-02 21:00:25,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053260972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:25,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:25,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:25,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126564335] [2022-11-02 21:00:25,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:25,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:25,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:25,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:25,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 305 [2022-11-02 21:00:25,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 329 transitions, 938 flow. Second operand has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:25,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:25,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 305 [2022-11-02 21:00:25,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:30,189 INFO L130 PetriNetUnfolder]: 2504/7503 cut-off events. [2022-11-02 21:00:30,190 INFO L131 PetriNetUnfolder]: For 1351/1359 co-relation queries the response was YES. [2022-11-02 21:00:30,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14369 conditions, 7503 events. 2504/7503 cut-off events. For 1351/1359 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 48870 event pairs, 904 based on Foata normal form. 0/6654 useless extension candidates. Maximal degree in co-relation 13093. Up to 3999 conditions per place. [2022-11-02 21:00:30,299 INFO L137 encePairwiseOnDemand]: 293/305 looper letters, 268 selfloop transitions, 31 changer transitions 0/485 dead transitions. [2022-11-02 21:00:30,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 485 transitions, 2010 flow [2022-11-02 21:00:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1245 transitions. [2022-11-02 21:00:30,304 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.680327868852459 [2022-11-02 21:00:30,304 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1245 transitions. [2022-11-02 21:00:30,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1245 transitions. [2022-11-02 21:00:30,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:30,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1245 transitions. [2022-11-02 21:00:30,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.5) internal successors, (1245), 6 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:30,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:30,314 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:30,315 INFO L175 Difference]: Start difference. First operand has 335 places, 329 transitions, 938 flow. Second operand 6 states and 1245 transitions. [2022-11-02 21:00:30,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 485 transitions, 2010 flow [2022-11-02 21:00:30,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 485 transitions, 1986 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-02 21:00:30,330 INFO L231 Difference]: Finished difference. Result has 339 places, 359 transitions, 1172 flow [2022-11-02 21:00:30,331 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1172, PETRI_PLACES=339, PETRI_TRANSITIONS=359} [2022-11-02 21:00:30,332 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 43 predicate places. [2022-11-02 21:00:30,333 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 359 transitions, 1172 flow [2022-11-02 21:00:30,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:30,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:30,334 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:30,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:30,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 21:00:30,551 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 899455612, now seen corresponding path program 1 times [2022-11-02 21:00:30,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:30,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872376799] [2022-11-02 21:00:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:30,699 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:30,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868351592] [2022-11-02 21:00:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:30,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:30,708 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:30,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 21:00:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:31,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:00:31,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:32,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:34,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872376799] [2022-11-02 21:00:34,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:34,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868351592] [2022-11-02 21:00:34,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868351592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:34,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:34,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-02 21:00:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558227128] [2022-11-02 21:00:34,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:34,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 21:00:34,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:34,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 21:00:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:00:34,313 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-02 21:00:34,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 359 transitions, 1172 flow. Second operand has 32 states, 32 states have (on average 289.375) internal successors, (9260), 32 states have internal predecessors, (9260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:34,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:34,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-02 21:00:34,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:36,857 INFO L130 PetriNetUnfolder]: 168/4173 cut-off events. [2022-11-02 21:00:36,857 INFO L131 PetriNetUnfolder]: For 853/864 co-relation queries the response was YES. [2022-11-02 21:00:36,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5446 conditions, 4173 events. 168/4173 cut-off events. For 853/864 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10457 event pairs, 10 based on Foata normal form. 16/4047 useless extension candidates. Maximal degree in co-relation 3930. Up to 107 conditions per place. [2022-11-02 21:00:36,871 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 36 selfloop transitions, 45 changer transitions 0/410 dead transitions. [2022-11-02 21:00:36,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 410 transitions, 1634 flow [2022-11-02 21:00:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-02 21:00:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-02 21:00:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 13004 transitions. [2022-11-02 21:00:36,887 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9474681238615665 [2022-11-02 21:00:36,887 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 13004 transitions. [2022-11-02 21:00:36,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 13004 transitions. [2022-11-02 21:00:36,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:36,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 13004 transitions. [2022-11-02 21:00:36,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 288.97777777777776) internal successors, (13004), 45 states have internal predecessors, (13004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 305.0) internal successors, (14030), 46 states have internal predecessors, (14030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,934 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 305.0) internal successors, (14030), 46 states have internal predecessors, (14030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,935 INFO L175 Difference]: Start difference. First operand has 339 places, 359 transitions, 1172 flow. Second operand 45 states and 13004 transitions. [2022-11-02 21:00:36,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 410 transitions, 1634 flow [2022-11-02 21:00:36,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 410 transitions, 1634 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:00:36,947 INFO L231 Difference]: Finished difference. Result has 392 places, 384 transitions, 1474 flow [2022-11-02 21:00:36,948 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1474, PETRI_PLACES=392, PETRI_TRANSITIONS=384} [2022-11-02 21:00:36,948 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 96 predicate places. [2022-11-02 21:00:36,949 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 384 transitions, 1474 flow [2022-11-02 21:00:36,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 289.375) internal successors, (9260), 32 states have internal predecessors, (9260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:36,952 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:36,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:37,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:00:37,175 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1879538564, now seen corresponding path program 2 times [2022-11-02 21:00:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:37,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048706535] [2022-11-02 21:00:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:37,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:37,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27292847] [2022-11-02 21:00:37,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:00:37,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:37,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:37,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 21:00:38,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:00:38,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:38,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:00:38,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:38,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:00:38,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:00:38,601 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:38,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 21:00:38,627 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:38,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 21:00:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-02 21:00:38,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:38,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:38,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048706535] [2022-11-02 21:00:38,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:38,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27292847] [2022-11-02 21:00:38,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27292847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:38,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:38,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:38,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171295806] [2022-11-02 21:00:38,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:38,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:38,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:38,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:38,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:38,664 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-02 21:00:38,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 384 transitions, 1474 flow. Second operand has 6 states, 6 states have (on average 189.83333333333334) internal successors, (1139), 6 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:38,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:38,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-02 21:00:38,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:44,950 INFO L130 PetriNetUnfolder]: 2016/8393 cut-off events. [2022-11-02 21:00:44,950 INFO L131 PetriNetUnfolder]: For 3337/3345 co-relation queries the response was YES. [2022-11-02 21:00:44,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16588 conditions, 8393 events. 2016/8393 cut-off events. For 3337/3345 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 45408 event pairs, 810 based on Foata normal form. 0/7822 useless extension candidates. Maximal degree in co-relation 14067. Up to 4169 conditions per place. [2022-11-02 21:00:45,005 INFO L137 encePairwiseOnDemand]: 294/305 looper letters, 253 selfloop transitions, 55 changer transitions 0/534 dead transitions. [2022-11-02 21:00:45,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 534 transitions, 2714 flow [2022-11-02 21:00:45,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:00:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2022-11-02 21:00:45,008 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7043715846994536 [2022-11-02 21:00:45,008 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2022-11-02 21:00:45,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2022-11-02 21:00:45,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:45,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2022-11-02 21:00:45,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,014 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,014 INFO L175 Difference]: Start difference. First operand has 392 places, 384 transitions, 1474 flow. Second operand 6 states and 1289 transitions. [2022-11-02 21:00:45,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 534 transitions, 2714 flow [2022-11-02 21:00:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 534 transitions, 2658 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-02 21:00:45,035 INFO L231 Difference]: Finished difference. Result has 384 places, 433 transitions, 1972 flow [2022-11-02 21:00:45,036 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1972, PETRI_PLACES=384, PETRI_TRANSITIONS=433} [2022-11-02 21:00:45,036 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 88 predicate places. [2022-11-02 21:00:45,037 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 433 transitions, 1972 flow [2022-11-02 21:00:45,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.83333333333334) internal successors, (1139), 6 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:45,038 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:45,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-02 21:00:45,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 21:00:45,267 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting gErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:00:45,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:45,267 INFO L85 PathProgramCache]: Analyzing trace with hash -144864379, now seen corresponding path program 1 times [2022-11-02 21:00:45,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:45,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478151203] [2022-11-02 21:00:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:45,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:45,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:00:45,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67494021] [2022-11-02 21:00:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:45,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:45,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:45,507 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:45,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 21:00:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:47,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 5829 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 21:00:47,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:49,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:52,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:52,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478151203] [2022-11-02 21:00:52,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:00:52,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67494021] [2022-11-02 21:00:52,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67494021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:52,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:52,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-02 21:00:52,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607601505] [2022-11-02 21:00:52,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:52,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-02 21:00:52,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:52,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-02 21:00:52,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 21:00:52,682 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-02 21:00:52,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 433 transitions, 1972 flow. Second operand has 61 states, 61 states have (on average 289.4918032786885) internal successors, (17659), 61 states have internal predecessors, (17659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:52,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:52,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-02 21:00:52,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:00,742 INFO L130 PetriNetUnfolder]: 254/7318 cut-off events. [2022-11-02 21:01:00,742 INFO L131 PetriNetUnfolder]: For 5562/5623 co-relation queries the response was YES. [2022-11-02 21:01:00,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10228 conditions, 7318 events. 254/7318 cut-off events. For 5562/5623 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14165 event pairs, 10 based on Foata normal form. 47/7193 useless extension candidates. Maximal degree in co-relation 8433. Up to 197 conditions per place. [2022-11-02 21:01:00,772 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 66 selfloop transitions, 90 changer transitions 0/534 dead transitions. [2022-11-02 21:01:00,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 534 transitions, 3058 flow [2022-11-02 21:01:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-02 21:01:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-02 21:01:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 26001 transitions. [2022-11-02 21:01:00,796 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9472131147540983 [2022-11-02 21:01:00,796 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 26001 transitions. [2022-11-02 21:01:00,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 26001 transitions. [2022-11-02 21:01:00,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:00,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 26001 transitions. [2022-11-02 21:01:00,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 288.9) internal successors, (26001), 90 states have internal predecessors, (26001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 305.0) internal successors, (27755), 91 states have internal predecessors, (27755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,874 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 305.0) internal successors, (27755), 91 states have internal predecessors, (27755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,875 INFO L175 Difference]: Start difference. First operand has 384 places, 433 transitions, 1972 flow. Second operand 90 states and 26001 transitions. [2022-11-02 21:01:00,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 534 transitions, 3058 flow [2022-11-02 21:01:00,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 534 transitions, 3058 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:01:00,901 INFO L231 Difference]: Finished difference. Result has 489 places, 479 transitions, 2626 flow [2022-11-02 21:01:00,901 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=2626, PETRI_PLACES=489, PETRI_TRANSITIONS=479} [2022-11-02 21:01:00,902 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 193 predicate places. [2022-11-02 21:01:00,902 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 479 transitions, 2626 flow [2022-11-02 21:01:00,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 289.4918032786885) internal successors, (17659), 61 states have internal predecessors, (17659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:00,906 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:00,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:01,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:01:01,123 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting gErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:01:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1204668865, now seen corresponding path program 2 times [2022-11-02 21:01:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:01,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847768267] [2022-11-02 21:01:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:01,635 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:01,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281203593] [2022-11-02 21:01:01,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:01,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:01,637 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:01,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 21:01:03,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:01:03,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:03,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:03,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:03,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:01:03,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:01:03,399 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:03,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 21:01:03,423 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:03,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 21:01:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-02 21:01:03,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:03,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:03,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847768267] [2022-11-02 21:01:03,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:03,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281203593] [2022-11-02 21:01:03,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281203593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:03,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:03,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:03,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827676050] [2022-11-02 21:01:03,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:03,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:03,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:03,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:03,463 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-02 21:01:03,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 479 transitions, 2626 flow. Second operand has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:03,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:03,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-02 21:01:03,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:17,221 INFO L130 PetriNetUnfolder]: 2129/11344 cut-off events. [2022-11-02 21:01:17,221 INFO L131 PetriNetUnfolder]: For 7939/7963 co-relation queries the response was YES. [2022-11-02 21:01:17,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23747 conditions, 11344 events. 2129/11344 cut-off events. For 7939/7963 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 46806 event pairs, 758 based on Foata normal form. 3/10864 useless extension candidates. Maximal degree in co-relation 18807. Up to 5538 conditions per place. [2022-11-02 21:01:17,337 INFO L137 encePairwiseOnDemand]: 294/305 looper letters, 306 selfloop transitions, 79 changer transitions 0/657 dead transitions. [2022-11-02 21:01:17,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 657 transitions, 4384 flow [2022-11-02 21:01:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1285 transitions. [2022-11-02 21:01:17,339 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7021857923497268 [2022-11-02 21:01:17,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1285 transitions. [2022-11-02 21:01:17,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1285 transitions. [2022-11-02 21:01:17,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:17,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1285 transitions. [2022-11-02 21:01:17,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.16666666666666) internal successors, (1285), 6 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:17,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:17,344 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:17,344 INFO L175 Difference]: Start difference. First operand has 489 places, 479 transitions, 2626 flow. Second operand 6 states and 1285 transitions. [2022-11-02 21:01:17,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 657 transitions, 4384 flow [2022-11-02 21:01:17,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 657 transitions, 4266 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-02 21:01:17,414 INFO L231 Difference]: Finished difference. Result has 457 places, 544 transitions, 3406 flow [2022-11-02 21:01:17,414 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3406, PETRI_PLACES=457, PETRI_TRANSITIONS=544} [2022-11-02 21:01:17,415 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 161 predicate places. [2022-11-02 21:01:17,415 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 544 transitions, 3406 flow [2022-11-02 21:01:17,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:17,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:17,415 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:17,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:17,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:17,616 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:01:17,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1012139581, now seen corresponding path program 1 times [2022-11-02 21:01:17,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:17,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259765242] [2022-11-02 21:01:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:17,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:18,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:18,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628189741] [2022-11-02 21:01:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:18,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:18,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:18,015 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:18,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 21:01:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:21,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 11375 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:01:21,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-02 21:01:26,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-02 21:01:33,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:33,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259765242] [2022-11-02 21:01:33,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:33,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628189741] [2022-11-02 21:01:33,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628189741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:33,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:33,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 21:01:33,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799591632] [2022-11-02 21:01:33,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:33,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:33,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:33,742 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 305 [2022-11-02 21:01:33,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 544 transitions, 3406 flow. Second operand has 8 states, 8 states have (on average 286.75) internal successors, (2294), 8 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:33,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 305 [2022-11-02 21:01:33,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:49,018 INFO L130 PetriNetUnfolder]: 360/10459 cut-off events. [2022-11-02 21:01:49,018 INFO L131 PetriNetUnfolder]: For 7272/7435 co-relation queries the response was YES. [2022-11-02 21:01:49,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15324 conditions, 10459 events. 360/10459 cut-off events. For 7272/7435 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16866 event pairs, 11 based on Foata normal form. 59/10358 useless extension candidates. Maximal degree in co-relation 12169. Up to 248 conditions per place. [2022-11-02 21:01:49,061 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 21 selfloop transitions, 9 changer transitions 0/560 dead transitions. [2022-11-02 21:01:49,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 560 transitions, 3500 flow [2022-11-02 21:01:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:01:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2588 transitions. [2022-11-02 21:01:49,065 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9428051001821494 [2022-11-02 21:01:49,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2588 transitions. [2022-11-02 21:01:49,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2588 transitions. [2022-11-02 21:01:49,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:49,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2588 transitions. [2022-11-02 21:01:49,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 287.55555555555554) internal successors, (2588), 9 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:49,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:49,073 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:49,073 INFO L175 Difference]: Start difference. First operand has 457 places, 544 transitions, 3406 flow. Second operand 9 states and 2588 transitions. [2022-11-02 21:01:49,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 560 transitions, 3500 flow [2022-11-02 21:01:49,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 560 transitions, 3500 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:01:49,133 INFO L231 Difference]: Finished difference. Result has 468 places, 550 transitions, 3456 flow [2022-11-02 21:01:49,134 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3456, PETRI_PLACES=468, PETRI_TRANSITIONS=550} [2022-11-02 21:01:49,135 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, 172 predicate places. [2022-11-02 21:01:49,135 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 550 transitions, 3456 flow [2022-11-02 21:01:49,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 286.75) internal successors, (2294), 8 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:49,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:49,138 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:49,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:49,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:49,367 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 21:01:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1510080909, now seen corresponding path program 2 times [2022-11-02 21:01:49,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:49,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181854505] [2022-11-02 21:01:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:49,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:50,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:50,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215675628] [2022-11-02 21:01:50,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:50,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:50,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:50,701 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:50,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdf959d-dd28-4f09-bc02-e83675edf980/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 21:01:54,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:01:54,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:55,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:55,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:55,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:01:55,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:01:55,369 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:55,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 21:01:55,391 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:55,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 21:01:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-02 21:01:55,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:55,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:55,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181854505] [2022-11-02 21:01:55,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:55,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215675628] [2022-11-02 21:01:55,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215675628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:55,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:55,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:55,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599465558] [2022-11-02 21:01:55,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:55,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:55,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:55,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:55,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:55,437 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 305 [2022-11-02 21:01:55,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 550 transitions, 3456 flow. Second operand has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:55,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:55,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 305 [2022-11-02 21:01:55,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand