./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:42:47,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:42:47,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:42:47,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:42:47,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:42:47,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:42:47,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:42:47,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:42:47,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:42:47,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:42:47,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:42:47,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:42:47,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:42:47,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:42:47,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:42:47,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:42:47,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:42:47,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:42:47,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:42:47,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:42:47,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:42:47,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:42:47,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:42:47,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:42:47,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:42:47,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:42:47,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:42:47,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:42:47,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:42:47,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:42:47,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:42:47,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:42:47,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:42:47,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:42:47,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:42:47,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:42:47,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:42:47,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:42:47,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:42:47,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:42:47,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:42:47,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:42:47,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:42:47,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:42:47,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:42:47,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:42:47,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:42:47,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:42:47,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:42:47,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:42:47,339 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:42:47,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:42:47,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:42:47,340 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:42:47,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:42:47,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:42:47,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:42:47,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:42:47,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:42:47,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:42:47,342 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:42:47,342 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:42:47,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:42:47,343 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:42:47,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:42:47,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:42:47,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:42:47,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:42:47,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:47,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:42:47,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:42:47,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:42:47,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:42:47,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:42:47,347 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:42:47,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:42:47,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:42:47,348 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_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-11-18 18:42:47,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:42:47,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:42:47,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:42:47,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:42:47,744 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:42:47,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-18 18:42:47,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/data/d209bfe7f/54453fb389e74e33aa88522341512905/FLAGc788a86d1 [2022-11-18 18:42:48,514 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:42:48,515 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-18 18:42:48,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/data/d209bfe7f/54453fb389e74e33aa88522341512905/FLAGc788a86d1 [2022-11-18 18:42:48,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/data/d209bfe7f/54453fb389e74e33aa88522341512905 [2022-11-18 18:42:48,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:42:48,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:42:48,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:48,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:42:48,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:42:48,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:48,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617aaf89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48, skipping insertion in model container [2022-11-18 18:42:48,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:48,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:42:48,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:42:49,677 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:42:49,681 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:42:49,687 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:42:49,691 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:42:49,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:49,757 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:42:49,828 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:42:49,833 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:42:49,835 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:42:49,838 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:42:49,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:49,944 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:42:49,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49 WrapperNode [2022-11-18 18:42:49,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:49,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:49,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:42:49,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:42:49,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,057 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 207 [2022-11-18 18:42:50,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:50,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:42:50,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:42:50,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:42:50,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,164 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:42:50,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:42:50,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:42:50,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:42:50,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:50,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:50,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:50,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:42:50,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:42:50,290 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:42:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:42:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:42:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:42:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:42:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:42:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:42:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:42:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:42:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:42:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:42:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:42:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:42:50,296 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:42:50,592 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:42:50,608 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:42:51,386 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:42:51,398 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:42:51,399 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:42:51,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:51 BoogieIcfgContainer [2022-11-18 18:42:51,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:42:51,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:42:51,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:42:51,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:42:51,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:42:48" (1/3) ... [2022-11-18 18:42:51,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e9f599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:51, skipping insertion in model container [2022-11-18 18:42:51,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49" (2/3) ... [2022-11-18 18:42:51,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e9f599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:51, skipping insertion in model container [2022-11-18 18:42:51,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:51" (3/3) ... [2022-11-18 18:42:51,414 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-11-18 18:42:51,426 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:42:51,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:42:51,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 18:42:51,441 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:42:51,579 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:42:51,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 305 transitions, 620 flow [2022-11-18 18:42:51,833 INFO L130 PetriNetUnfolder]: 14/303 cut-off events. [2022-11-18 18:42:51,834 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:51,844 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. [2022-11-18 18:42:51,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 305 transitions, 620 flow [2022-11-18 18:42:51,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 303 transitions, 612 flow [2022-11-18 18:42:51,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:42:51,908 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;@4e2661c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:42:51,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-18 18:42:51,920 INFO L130 PetriNetUnfolder]: 1/45 cut-off events. [2022-11-18 18:42:51,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:51,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:51,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:51,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:42:51,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:51,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1165101949, now seen corresponding path program 1 times [2022-11-18 18:42:51,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:51,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200659038] [2022-11-18 18:42:51,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:51,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:53,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:53,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200659038] [2022-11-18 18:42:53,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200659038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:53,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:53,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:42:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316661207] [2022-11-18 18:42:53,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:53,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:53,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:53,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:42:53,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 305 [2022-11-18 18:42:53,146 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) [2022-11-18 18:42:53,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:53,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 305 [2022-11-18 18:42:53,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:54,386 INFO L130 PetriNetUnfolder]: 744/2618 cut-off events. [2022-11-18 18:42:54,386 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 18:42:54,402 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 17647 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. [2022-11-18 18:42:54,426 INFO L137 encePairwiseOnDemand]: 285/305 looper letters, 110 selfloop transitions, 10 changer transitions 0/293 dead transitions. [2022-11-18 18:42:54,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 293 transitions, 832 flow [2022-11-18 18:42:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:42:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:42:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2022-11-18 18:42:54,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.644808743169399 [2022-11-18 18:42:54,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2022-11-18 18:42:54,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2022-11-18 18:42:54,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:54,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2022-11-18 18:42:54,469 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) [2022-11-18 18:42:54,482 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) [2022-11-18 18:42:54,484 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) [2022-11-18 18:42:54,487 INFO L175 Difference]: Start difference. First operand has 296 places, 303 transitions, 612 flow. Second operand 6 states and 1180 transitions. [2022-11-18 18:42:54,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 293 transitions, 832 flow [2022-11-18 18:42:54,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 293 transitions, 830 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:42:54,504 INFO L231 Difference]: Finished difference. Result has 297 places, 293 transitions, 610 flow [2022-11-18 18:42:54,508 INFO L271 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} [2022-11-18 18:42:54,513 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 1 predicate places. [2022-11-18 18:42:54,513 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 293 transitions, 610 flow [2022-11-18 18:42:54,515 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) [2022-11-18 18:42:54,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:54,515 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:54,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:42:54,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:42:54,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:54,517 INFO L85 PathProgramCache]: Analyzing trace with hash -963911608, now seen corresponding path program 1 times [2022-11-18 18:42:54,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:54,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924932479] [2022-11-18 18:42:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:55,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924932479] [2022-11-18 18:42:55,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924932479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:55,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:55,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:42:55,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560750157] [2022-11-18 18:42:55,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:55,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:55,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:55,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:55,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:42:55,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 305 [2022-11-18 18:42:55,081 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) [2022-11-18 18:42:55,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:55,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 305 [2022-11-18 18:42:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:56,068 INFO L130 PetriNetUnfolder]: 744/2616 cut-off events. [2022-11-18 18:42:56,068 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:42:56,077 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 17583 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. [2022-11-18 18:42:56,095 INFO L137 encePairwiseOnDemand]: 293/305 looper letters, 108 selfloop transitions, 10 changer transitions 0/291 dead transitions. [2022-11-18 18:42:56,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 291 transitions, 842 flow [2022-11-18 18:42:56,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:42:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:42:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1170 transitions. [2022-11-18 18:42:56,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2022-11-18 18:42:56,100 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1170 transitions. [2022-11-18 18:42:56,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1170 transitions. [2022-11-18 18:42:56,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:56,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1170 transitions. [2022-11-18 18:42:56,106 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) [2022-11-18 18:42:56,112 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) [2022-11-18 18:42:56,114 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) [2022-11-18 18:42:56,114 INFO L175 Difference]: Start difference. First operand has 297 places, 293 transitions, 610 flow. Second operand 6 states and 1170 transitions. [2022-11-18 18:42:56,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 291 transitions, 842 flow [2022-11-18 18:42:56,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 291 transitions, 822 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:42:56,125 INFO L231 Difference]: Finished difference. Result has 295 places, 291 transitions, 606 flow [2022-11-18 18:42:56,126 INFO L271 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} [2022-11-18 18:42:56,128 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -1 predicate places. [2022-11-18 18:42:56,128 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 291 transitions, 606 flow [2022-11-18 18:42:56,129 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) [2022-11-18 18:42:56,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:56,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:56,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:42:56,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:42:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash 903544362, now seen corresponding path program 1 times [2022-11-18 18:42:56,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:56,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724825093] [2022-11-18 18:42:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:56,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:56,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:56,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724825093] [2022-11-18 18:42:56,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724825093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:56,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:56,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:56,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445088782] [2022-11-18 18:42:56,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:56,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:56,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:56,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:56,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 305 [2022-11-18 18:42:56,243 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) [2022-11-18 18:42:56,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:56,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 305 [2022-11-18 18:42:56,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:56,361 INFO L130 PetriNetUnfolder]: 7/415 cut-off events. [2022-11-18 18:42:56,362 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:56,363 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 1021 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. [2022-11-18 18:42:56,365 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 17 selfloop transitions, 2 changer transitions 0/298 dead transitions. [2022-11-18 18:42:56,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 298 transitions, 658 flow [2022-11-18 18:42:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:42:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2022-11-18 18:42:56,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9562841530054644 [2022-11-18 18:42:56,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2022-11-18 18:42:56,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2022-11-18 18:42:56,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:56,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2022-11-18 18:42:56,375 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) [2022-11-18 18:42:56,378 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) [2022-11-18 18:42:56,380 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) [2022-11-18 18:42:56,380 INFO L175 Difference]: Start difference. First operand has 295 places, 291 transitions, 606 flow. Second operand 3 states and 875 transitions. [2022-11-18 18:42:56,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 298 transitions, 658 flow [2022-11-18 18:42:56,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 298 transitions, 638 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:42:56,389 INFO L231 Difference]: Finished difference. Result has 293 places, 292 transitions, 598 flow [2022-11-18 18:42:56,390 INFO L271 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} [2022-11-18 18:42:56,392 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -3 predicate places. [2022-11-18 18:42:56,393 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 292 transitions, 598 flow [2022-11-18 18:42:56,394 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) [2022-11-18 18:42:56,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:56,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:56,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:42:56,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:42:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1083273916, now seen corresponding path program 1 times [2022-11-18 18:42:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:56,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106601321] [2022-11-18 18:42:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:56,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:56,435 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:56,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151876699] [2022-11-18 18:42:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:56,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:56,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:56,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:56,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:42:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:56,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:42:56,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:56,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:42:56,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:56,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:42:56,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:56,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:56,901 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:56,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:42:56,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:56,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:56,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:56,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:56,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:42:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:57,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:57,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106601321] [2022-11-18 18:42:57,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:57,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151876699] [2022-11-18 18:42:57,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151876699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:57,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:57,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:42:57,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664618120] [2022-11-18 18:42:57,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:57,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:42:57,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:57,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:42:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:42:57,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 305 [2022-11-18 18:42:57,042 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) [2022-11-18 18:42:57,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:57,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 305 [2022-11-18 18:42:57,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:58,950 INFO L130 PetriNetUnfolder]: 1489/5255 cut-off events. [2022-11-18 18:42:58,950 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:42:58,965 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 55. Compared 36051 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. [2022-11-18 18:42:58,996 INFO L137 encePairwiseOnDemand]: 295/305 looper letters, 166 selfloop transitions, 9 changer transitions 0/352 dead transitions. [2022-11-18 18:42:58,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 352 transitions, 1072 flow [2022-11-18 18:42:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:42:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:42:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1778 transitions. [2022-11-18 18:42:59,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6477231329690346 [2022-11-18 18:42:59,003 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1778 transitions. [2022-11-18 18:42:59,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1778 transitions. [2022-11-18 18:42:59,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:59,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1778 transitions. [2022-11-18 18:42:59,010 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) [2022-11-18 18:42:59,017 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) [2022-11-18 18:42:59,019 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) [2022-11-18 18:42:59,019 INFO L175 Difference]: Start difference. First operand has 293 places, 292 transitions, 598 flow. Second operand 9 states and 1778 transitions. [2022-11-18 18:42:59,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 352 transitions, 1072 flow [2022-11-18 18:42:59,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 352 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:42:59,028 INFO L231 Difference]: Finished difference. Result has 300 places, 292 transitions, 620 flow [2022-11-18 18:42:59,029 INFO L271 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} [2022-11-18 18:42:59,029 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 4 predicate places. [2022-11-18 18:42:59,030 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 292 transitions, 620 flow [2022-11-18 18:42:59,031 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) [2022-11-18 18:42:59,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:59,031 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:59,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:42:59,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:59,239 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:42:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1268327861, now seen corresponding path program 1 times [2022-11-18 18:42:59,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:59,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624023944] [2022-11-18 18:42:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:59,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:59,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:59,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624023944] [2022-11-18 18:42:59,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624023944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:59,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:59,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:59,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840636328] [2022-11-18 18:42:59,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:59,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:59,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:59,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 305 [2022-11-18 18:42:59,372 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) [2022-11-18 18:42:59,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:59,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 305 [2022-11-18 18:42:59,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:59,551 INFO L130 PetriNetUnfolder]: 7/603 cut-off events. [2022-11-18 18:42:59,551 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:42:59,553 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 1003 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. [2022-11-18 18:42:59,555 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 11 selfloop transitions, 2 changer transitions 0/296 dead transitions. [2022-11-18 18:42:59,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 296 transitions, 654 flow [2022-11-18 18:42:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:42:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2022-11-18 18:42:59,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9595628415300547 [2022-11-18 18:42:59,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2022-11-18 18:42:59,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2022-11-18 18:42:59,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:59,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2022-11-18 18:42:59,563 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) [2022-11-18 18:42:59,566 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) [2022-11-18 18:42:59,567 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) [2022-11-18 18:42:59,567 INFO L175 Difference]: Start difference. First operand has 300 places, 292 transitions, 620 flow. Second operand 3 states and 878 transitions. [2022-11-18 18:42:59,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 296 transitions, 654 flow [2022-11-18 18:42:59,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 296 transitions, 640 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 18:42:59,577 INFO L231 Difference]: Finished difference. Result has 296 places, 293 transitions, 618 flow [2022-11-18 18:42:59,578 INFO L271 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} [2022-11-18 18:42:59,579 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 0 predicate places. [2022-11-18 18:42:59,579 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 293 transitions, 618 flow [2022-11-18 18:42:59,580 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) [2022-11-18 18:42:59,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:59,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:59,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:42:59,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:42:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1507695787, now seen corresponding path program 1 times [2022-11-18 18:42:59,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:59,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937330188] [2022-11-18 18:42:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:59,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:59,621 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:42:59,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752739396] [2022-11-18 18:42:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:59,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:59,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:59,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:59,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:42:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:59,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:42:59,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:59,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:42:59,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:42:59,922 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:59,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:42:59,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:59,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:43:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:00,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:00,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:00,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937330188] [2022-11-18 18:43:00,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:00,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752739396] [2022-11-18 18:43:00,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752739396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:00,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:00,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390742511] [2022-11-18 18:43:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:00,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:00,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:00,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:00,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:00,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 305 [2022-11-18 18:43:00,016 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) [2022-11-18 18:43:00,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:00,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 305 [2022-11-18 18:43:00,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:01,203 INFO L130 PetriNetUnfolder]: 745/2924 cut-off events. [2022-11-18 18:43:01,204 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:43:01,213 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 18396 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. [2022-11-18 18:43:01,227 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 104 selfloop transitions, 5 changer transitions 0/292 dead transitions. [2022-11-18 18:43:01,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 292 transitions, 834 flow [2022-11-18 18:43:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2022-11-18 18:43:01,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6568306010928961 [2022-11-18 18:43:01,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2022-11-18 18:43:01,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2022-11-18 18:43:01,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:01,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2022-11-18 18:43:01,237 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) [2022-11-18 18:43:01,241 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) [2022-11-18 18:43:01,242 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) [2022-11-18 18:43:01,243 INFO L175 Difference]: Start difference. First operand has 296 places, 293 transitions, 618 flow. Second operand 6 states and 1202 transitions. [2022-11-18 18:43:01,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 292 transitions, 834 flow [2022-11-18 18:43:01,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 292 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:43:01,250 INFO L231 Difference]: Finished difference. Result has 299 places, 292 transitions, 624 flow [2022-11-18 18:43:01,256 INFO L271 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} [2022-11-18 18:43:01,259 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 3 predicate places. [2022-11-18 18:43:01,260 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 292 transitions, 624 flow [2022-11-18 18:43:01,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:01,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:01,261 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:01,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:01,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:43:01,468 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:01,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:01,469 INFO L85 PathProgramCache]: Analyzing trace with hash 421133850, now seen corresponding path program 1 times [2022-11-18 18:43:01,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:01,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195091427] [2022-11-18 18:43:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:01,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:01,508 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:01,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527339825] [2022-11-18 18:43:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:01,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:01,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:01,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:01,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:43:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:01,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:43:01,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:01,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:43:01,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:43:01,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:01,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 18:43:01,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:01,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-18 18:43:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:01,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:01,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:01,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195091427] [2022-11-18 18:43:01,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:01,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527339825] [2022-11-18 18:43:01,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527339825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:01,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:01,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:01,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129359673] [2022-11-18 18:43:01,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:01,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:01,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:01,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:01,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:01,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 305 [2022-11-18 18:43:01,886 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) [2022-11-18 18:43:01,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:01,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 305 [2022-11-18 18:43:01,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:02,922 INFO L130 PetriNetUnfolder]: 745/2920 cut-off events. [2022-11-18 18:43:02,922 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:43:02,931 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 18436 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. [2022-11-18 18:43:02,943 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 104 selfloop transitions, 5 changer transitions 0/291 dead transitions. [2022-11-18 18:43:02,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 291 transitions, 840 flow [2022-11-18 18:43:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2022-11-18 18:43:02,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.653551912568306 [2022-11-18 18:43:02,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2022-11-18 18:43:02,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2022-11-18 18:43:02,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:02,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2022-11-18 18:43:02,953 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) [2022-11-18 18:43:02,957 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) [2022-11-18 18:43:02,958 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) [2022-11-18 18:43:02,959 INFO L175 Difference]: Start difference. First operand has 299 places, 292 transitions, 624 flow. Second operand 6 states and 1196 transitions. [2022-11-18 18:43:02,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 291 transitions, 840 flow [2022-11-18 18:43:02,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 291 transitions, 830 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:43:02,967 INFO L231 Difference]: Finished difference. Result has 298 places, 291 transitions, 622 flow [2022-11-18 18:43:02,967 INFO L271 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} [2022-11-18 18:43:02,968 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 2 predicate places. [2022-11-18 18:43:02,968 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 291 transitions, 622 flow [2022-11-18 18:43:02,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:02,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:02,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:02,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:03,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:43:03,177 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:03,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1898335952, now seen corresponding path program 1 times [2022-11-18 18:43:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:03,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987184012] [2022-11-18 18:43:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:03,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:03,321 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:03,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176530397] [2022-11-18 18:43:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:03,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:03,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:03,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:03,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:43:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:03,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:43:03,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:03,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:43:03,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:03,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:03,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:43:03,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:03,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:43:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:03,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:03,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987184012] [2022-11-18 18:43:03,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:03,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176530397] [2022-11-18 18:43:03,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176530397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:03,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:03,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:03,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35425541] [2022-11-18 18:43:03,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:03,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:03,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:03,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:03,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:03,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-18 18:43:03,703 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) [2022-11-18 18:43:03,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:03,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-18 18:43:03,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:04,591 INFO L130 PetriNetUnfolder]: 745/2916 cut-off events. [2022-11-18 18:43:04,591 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:43:04,598 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 18433 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. [2022-11-18 18:43:04,612 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 105 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-18 18:43:04,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 290 transitions, 840 flow [2022-11-18 18:43:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1185 transitions. [2022-11-18 18:43:04,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6475409836065574 [2022-11-18 18:43:04,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1185 transitions. [2022-11-18 18:43:04,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1185 transitions. [2022-11-18 18:43:04,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:04,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1185 transitions. [2022-11-18 18:43:04,625 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) [2022-11-18 18:43:04,629 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) [2022-11-18 18:43:04,630 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) [2022-11-18 18:43:04,631 INFO L175 Difference]: Start difference. First operand has 298 places, 291 transitions, 622 flow. Second operand 6 states and 1185 transitions. [2022-11-18 18:43:04,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 290 transitions, 840 flow [2022-11-18 18:43:04,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 290 transitions, 830 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:43:04,644 INFO L231 Difference]: Finished difference. Result has 297 places, 290 transitions, 620 flow [2022-11-18 18:43:04,645 INFO L271 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} [2022-11-18 18:43:04,649 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 1 predicate places. [2022-11-18 18:43:04,649 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 290 transitions, 620 flow [2022-11-18 18:43:04,650 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) [2022-11-18 18:43:04,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:04,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:04,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:04,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:04,859 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:04,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:04,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1726560173, now seen corresponding path program 1 times [2022-11-18 18:43:04,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:04,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176471935] [2022-11-18 18:43:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:04,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:04,911 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:04,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025811875] [2022-11-18 18:43:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:04,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:04,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:04,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:04,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:43:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:05,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:43:05,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:05,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:43:05,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:43:05,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:05,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 18:43:05,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:05,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-18 18:43:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:05,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:05,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:05,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176471935] [2022-11-18 18:43:05,629 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:05,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025811875] [2022-11-18 18:43:05,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025811875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:05,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:05,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:43:05,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132518697] [2022-11-18 18:43:05,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:05,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:43:05,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:05,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:43:05,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:43:05,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 305 [2022-11-18 18:43:05,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 290 transitions, 620 flow. Second operand has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:05,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:05,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 305 [2022-11-18 18:43:05,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:07,091 INFO L130 PetriNetUnfolder]: 745/2912 cut-off events. [2022-11-18 18:43:07,092 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:43:07,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4665 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 18444 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4205. Up to 1385 conditions per place. [2022-11-18 18:43:07,114 INFO L137 encePairwiseOnDemand]: 286/305 looper letters, 139 selfloop transitions, 26 changer transitions 0/329 dead transitions. [2022-11-18 18:43:07,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 329 transitions, 1034 flow [2022-11-18 18:43:07,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:43:07,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:43:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3610 transitions. [2022-11-18 18:43:07,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5636221701795472 [2022-11-18 18:43:07,128 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3610 transitions. [2022-11-18 18:43:07,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3610 transitions. [2022-11-18 18:43:07,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:07,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3610 transitions. [2022-11-18 18:43:07,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.9047619047619) internal successors, (3610), 21 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:07,156 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) [2022-11-18 18:43:07,159 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) [2022-11-18 18:43:07,160 INFO L175 Difference]: Start difference. First operand has 297 places, 290 transitions, 620 flow. Second operand 21 states and 3610 transitions. [2022-11-18 18:43:07,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 329 transitions, 1034 flow [2022-11-18 18:43:07,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 329 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:43:07,171 INFO L231 Difference]: Finished difference. Result has 314 places, 301 transitions, 709 flow [2022-11-18 18:43:07,172 INFO L271 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=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=709, PETRI_PLACES=314, PETRI_TRANSITIONS=301} [2022-11-18 18:43:07,173 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 18 predicate places. [2022-11-18 18:43:07,173 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 301 transitions, 709 flow [2022-11-18 18:43:07,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:07,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:07,175 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:07,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 18:43:07,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:07,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1831521313, now seen corresponding path program 1 times [2022-11-18 18:43:07,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:07,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406395305] [2022-11-18 18:43:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:07,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:07,426 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:07,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190653826] [2022-11-18 18:43:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:07,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:07,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:07,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:07,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:43:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:07,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:43:07,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:07,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:43:07,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:07,798 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:07,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:43:07,840 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:07,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:43:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:07,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:07,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:07,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406395305] [2022-11-18 18:43:07,871 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:07,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190653826] [2022-11-18 18:43:07,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190653826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:07,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:07,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:07,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527255774] [2022-11-18 18:43:07,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:07,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:07,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:07,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:07,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:07,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 305 [2022-11-18 18:43:07,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 301 transitions, 709 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) [2022-11-18 18:43:07,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:07,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 305 [2022-11-18 18:43:07,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:08,706 INFO L130 PetriNetUnfolder]: 745/2908 cut-off events. [2022-11-18 18:43:08,706 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-18 18:43:08,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4670 conditions, 2908 events. 745/2908 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18386 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4182. Up to 1567 conditions per place. [2022-11-18 18:43:08,729 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 103 selfloop transitions, 5 changer transitions 0/300 dead transitions. [2022-11-18 18:43:08,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 300 transitions, 923 flow [2022-11-18 18:43:08,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2022-11-18 18:43:08,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6491803278688525 [2022-11-18 18:43:08,734 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1188 transitions. [2022-11-18 18:43:08,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1188 transitions. [2022-11-18 18:43:08,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:08,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1188 transitions. [2022-11-18 18:43:08,738 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) [2022-11-18 18:43:08,742 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) [2022-11-18 18:43:08,743 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) [2022-11-18 18:43:08,743 INFO L175 Difference]: Start difference. First operand has 314 places, 301 transitions, 709 flow. Second operand 6 states and 1188 transitions. [2022-11-18 18:43:08,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 300 transitions, 923 flow [2022-11-18 18:43:08,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 300 transitions, 904 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 18:43:08,752 INFO L231 Difference]: Finished difference. Result has 311 places, 300 transitions, 698 flow [2022-11-18 18:43:08,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=698, PETRI_PLACES=311, PETRI_TRANSITIONS=300} [2022-11-18 18:43:08,753 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 15 predicate places. [2022-11-18 18:43:08,753 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 300 transitions, 698 flow [2022-11-18 18:43:08,754 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) [2022-11-18 18:43:08,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:08,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:08,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:08,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:43:08,977 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:08,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2114089264, now seen corresponding path program 1 times [2022-11-18 18:43:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:08,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567651711] [2022-11-18 18:43:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:09,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:09,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412685953] [2022-11-18 18:43:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:09,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:09,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:09,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:09,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:43:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:09,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:43:09,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:09,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:09,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:09,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567651711] [2022-11-18 18:43:09,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:09,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412685953] [2022-11-18 18:43:09,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412685953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:09,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:43:09,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:43:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377380952] [2022-11-18 18:43:09,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:09,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:43:09,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:43:09,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:43:09,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-18 18:43:09,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 300 transitions, 698 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) [2022-11-18 18:43:09,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:09,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-18 18:43:09,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:10,078 INFO L130 PetriNetUnfolder]: 7/769 cut-off events. [2022-11-18 18:43:10,078 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-18 18:43:10,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 769 events. 7/769 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 533 event pairs, 0 based on Foata normal form. 4/759 useless extension candidates. Maximal degree in co-relation 397. Up to 19 conditions per place. [2022-11-18 18:43:10,082 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 12 selfloop transitions, 9 changer transitions 0/310 dead transitions. [2022-11-18 18:43:10,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 310 transitions, 762 flow [2022-11-18 18:43:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:43:10,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:43:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2606 transitions. [2022-11-18 18:43:10,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9493624772313297 [2022-11-18 18:43:10,091 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2606 transitions. [2022-11-18 18:43:10,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2606 transitions. [2022-11-18 18:43:10,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:10,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2606 transitions. [2022-11-18 18:43:10,102 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) [2022-11-18 18:43:10,108 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) [2022-11-18 18:43:10,109 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) [2022-11-18 18:43:10,110 INFO L175 Difference]: Start difference. First operand has 311 places, 300 transitions, 698 flow. Second operand 9 states and 2606 transitions. [2022-11-18 18:43:10,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 310 transitions, 762 flow [2022-11-18 18:43:10,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 310 transitions, 752 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:43:10,120 INFO L231 Difference]: Finished difference. Result has 317 places, 306 transitions, 738 flow [2022-11-18 18:43:10,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=738, PETRI_PLACES=317, PETRI_TRANSITIONS=306} [2022-11-18 18:43:10,121 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 21 predicate places. [2022-11-18 18:43:10,122 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 306 transitions, 738 flow [2022-11-18 18:43:10,123 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) [2022-11-18 18:43:10,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:10,124 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:10,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:10,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:43:10,332 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:10,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:10,333 INFO L85 PathProgramCache]: Analyzing trace with hash 516908112, now seen corresponding path program 2 times [2022-11-18 18:43:10,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:10,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236724277] [2022-11-18 18:43:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:10,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:10,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446298441] [2022-11-18 18:43:10,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:10,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:10,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:10,482 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:10,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:43:10,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:43:10,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:10,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:43:10,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:10,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:43:10,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 18:43:10,980 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:10,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-18 18:43:11,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:11,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-18 18:43:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-18 18:43:11,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:11,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:11,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236724277] [2022-11-18 18:43:11,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:11,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446298441] [2022-11-18 18:43:11,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446298441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:11,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:11,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153880224] [2022-11-18 18:43:11,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:11,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:11,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 305 [2022-11-18 18:43:11,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 306 transitions, 738 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) [2022-11-18 18:43:11,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:11,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 305 [2022-11-18 18:43:11,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:13,215 INFO L130 PetriNetUnfolder]: 1693/4827 cut-off events. [2022-11-18 18:43:13,216 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-18 18:43:13,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8611 conditions, 4827 events. 1693/4827 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 31752 event pairs, 775 based on Foata normal form. 0/4218 useless extension candidates. Maximal degree in co-relation 7897. Up to 2615 conditions per place. [2022-11-18 18:43:13,266 INFO L137 encePairwiseOnDemand]: 293/305 looper letters, 237 selfloop transitions, 23 changer transitions 0/442 dead transitions. [2022-11-18 18:43:13,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 442 transitions, 1538 flow [2022-11-18 18:43:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1249 transitions. [2022-11-18 18:43:13,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6825136612021858 [2022-11-18 18:43:13,270 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1249 transitions. [2022-11-18 18:43:13,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1249 transitions. [2022-11-18 18:43:13,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:13,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1249 transitions. [2022-11-18 18:43:13,275 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) [2022-11-18 18:43:13,278 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) [2022-11-18 18:43:13,279 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) [2022-11-18 18:43:13,279 INFO L175 Difference]: Start difference. First operand has 317 places, 306 transitions, 738 flow. Second operand 6 states and 1249 transitions. [2022-11-18 18:43:13,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 442 transitions, 1538 flow [2022-11-18 18:43:13,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 442 transitions, 1532 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-18 18:43:13,290 INFO L231 Difference]: Finished difference. Result has 326 places, 328 transitions, 890 flow [2022-11-18 18:43:13,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=326, PETRI_TRANSITIONS=328} [2022-11-18 18:43:13,291 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 30 predicate places. [2022-11-18 18:43:13,292 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 328 transitions, 890 flow [2022-11-18 18:43:13,292 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) [2022-11-18 18:43:13,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:13,293 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:13,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:13,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:43:13,503 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash 105158886, now seen corresponding path program 1 times [2022-11-18 18:43:13,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:13,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488079686] [2022-11-18 18:43:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:13,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:13,614 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:13,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514837487] [2022-11-18 18:43:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:13,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:13,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:13,619 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:13,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:43:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:14,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:43:14,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:14,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:15,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488079686] [2022-11-18 18:43:15,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:15,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514837487] [2022-11-18 18:43:15,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514837487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:15,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:43:15,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:43:15,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084416272] [2022-11-18 18:43:15,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:15,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:43:15,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:15,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:43:15,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:43:15,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-18 18:43:15,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 328 transitions, 890 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) [2022-11-18 18:43:15,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:15,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-18 18:43:15,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:16,614 INFO L130 PetriNetUnfolder]: 75/2061 cut-off events. [2022-11-18 18:43:16,614 INFO L131 PetriNetUnfolder]: For 113/116 co-relation queries the response was YES. [2022-11-18 18:43:16,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 2061 events. 75/2061 cut-off events. For 113/116 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4350 event pairs, 8 based on Foata normal form. 8/1993 useless extension candidates. Maximal degree in co-relation 2171. Up to 65 conditions per place. [2022-11-18 18:43:16,625 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 20 selfloop transitions, 21 changer transitions 0/352 dead transitions. [2022-11-18 18:43:16,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 352 transitions, 1072 flow [2022-11-18 18:43:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:43:16,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:43:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6072 transitions. [2022-11-18 18:43:16,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9480093676814988 [2022-11-18 18:43:16,644 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6072 transitions. [2022-11-18 18:43:16,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6072 transitions. [2022-11-18 18:43:16,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:16,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6072 transitions. [2022-11-18 18:43:16,666 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) [2022-11-18 18:43:16,680 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) [2022-11-18 18:43:16,683 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) [2022-11-18 18:43:16,683 INFO L175 Difference]: Start difference. First operand has 326 places, 328 transitions, 890 flow. Second operand 21 states and 6072 transitions. [2022-11-18 18:43:16,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 352 transitions, 1072 flow [2022-11-18 18:43:16,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 352 transitions, 1072 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:43:16,696 INFO L231 Difference]: Finished difference. Result has 351 places, 341 transitions, 1020 flow [2022-11-18 18:43:16,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1020, PETRI_PLACES=351, PETRI_TRANSITIONS=341} [2022-11-18 18:43:16,698 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 55 predicate places. [2022-11-18 18:43:16,698 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 341 transitions, 1020 flow [2022-11-18 18:43:16,700 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) [2022-11-18 18:43:16,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:16,701 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:16,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:16,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:43:16,911 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:16,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1817311450, now seen corresponding path program 2 times [2022-11-18 18:43:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:16,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577958123] [2022-11-18 18:43:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:16,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:17,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:17,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789548522] [2022-11-18 18:43:17,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:17,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:17,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:17,153 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:17,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:43:17,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:43:17,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:17,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:43:17,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:17,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:43:17,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 18:43:17,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:17,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-18 18:43:17,961 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:17,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-18 18:43:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-18 18:43:17,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:17,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:17,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577958123] [2022-11-18 18:43:17,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:17,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789548522] [2022-11-18 18:43:17,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789548522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:17,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:17,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:17,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659654819] [2022-11-18 18:43:17,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:17,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:17,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:17,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:17,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:17,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 305 [2022-11-18 18:43:17,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 341 transitions, 1020 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) [2022-11-18 18:43:17,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:17,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 305 [2022-11-18 18:43:18,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:22,206 INFO L130 PetriNetUnfolder]: 2504/7503 cut-off events. [2022-11-18 18:43:22,206 INFO L131 PetriNetUnfolder]: For 1408/1416 co-relation queries the response was YES. [2022-11-18 18:43:22,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14582 conditions, 7503 events. 2504/7503 cut-off events. For 1408/1416 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 48979 event pairs, 904 based on Foata normal form. 0/6654 useless extension candidates. Maximal degree in co-relation 13184. Up to 3999 conditions per place. [2022-11-18 18:43:22,269 INFO L137 encePairwiseOnDemand]: 293/305 looper letters, 270 selfloop transitions, 31 changer transitions 0/497 dead transitions. [2022-11-18 18:43:22,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 497 transitions, 2096 flow [2022-11-18 18:43:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1245 transitions. [2022-11-18 18:43:22,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.680327868852459 [2022-11-18 18:43:22,273 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1245 transitions. [2022-11-18 18:43:22,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1245 transitions. [2022-11-18 18:43:22,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:22,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1245 transitions. [2022-11-18 18:43:22,276 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) [2022-11-18 18:43:22,280 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) [2022-11-18 18:43:22,281 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) [2022-11-18 18:43:22,281 INFO L175 Difference]: Start difference. First operand has 351 places, 341 transitions, 1020 flow. Second operand 6 states and 1245 transitions. [2022-11-18 18:43:22,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 497 transitions, 2096 flow [2022-11-18 18:43:22,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 497 transitions, 2072 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 18:43:22,297 INFO L231 Difference]: Finished difference. Result has 355 places, 371 transitions, 1254 flow [2022-11-18 18:43:22,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1254, PETRI_PLACES=355, PETRI_TRANSITIONS=371} [2022-11-18 18:43:22,299 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 59 predicate places. [2022-11-18 18:43:22,299 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 371 transitions, 1254 flow [2022-11-18 18:43:22,300 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) [2022-11-18 18:43:22,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:22,301 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:22,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:22,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:43:22,508 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:22,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:22,509 INFO L85 PathProgramCache]: Analyzing trace with hash -365266726, now seen corresponding path program 1 times [2022-11-18 18:43:22,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:22,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941407769] [2022-11-18 18:43:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:22,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:22,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:22,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200706556] [2022-11-18 18:43:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:22,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:22,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:22,669 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:22,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:43:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:23,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:43:23,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:25,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:26,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:26,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941407769] [2022-11-18 18:43:26,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:26,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200706556] [2022-11-18 18:43:26,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200706556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:26,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:43:26,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 18:43:26,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893983458] [2022-11-18 18:43:26,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:26,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:43:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:43:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:43:26,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-18 18:43:26,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 371 transitions, 1254 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) [2022-11-18 18:43:26,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:26,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-18 18:43:26,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:30,130 INFO L130 PetriNetUnfolder]: 153/4155 cut-off events. [2022-11-18 18:43:30,131 INFO L131 PetriNetUnfolder]: For 921/934 co-relation queries the response was YES. [2022-11-18 18:43:30,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5860 conditions, 4155 events. 153/4155 cut-off events. For 921/934 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10386 event pairs, 10 based on Foata normal form. 16/4029 useless extension candidates. Maximal degree in co-relation 4373. Up to 107 conditions per place. [2022-11-18 18:43:30,142 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 36 selfloop transitions, 45 changer transitions 0/422 dead transitions. [2022-11-18 18:43:30,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 422 transitions, 1716 flow [2022-11-18 18:43:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:43:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 18:43:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 13004 transitions. [2022-11-18 18:43:30,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9474681238615665 [2022-11-18 18:43:30,156 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 13004 transitions. [2022-11-18 18:43:30,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 13004 transitions. [2022-11-18 18:43:30,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:30,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 13004 transitions. [2022-11-18 18:43:30,183 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) [2022-11-18 18:43:30,202 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) [2022-11-18 18:43:30,208 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) [2022-11-18 18:43:30,208 INFO L175 Difference]: Start difference. First operand has 355 places, 371 transitions, 1254 flow. Second operand 45 states and 13004 transitions. [2022-11-18 18:43:30,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 422 transitions, 1716 flow [2022-11-18 18:43:30,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 422 transitions, 1716 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:43:30,227 INFO L231 Difference]: Finished difference. Result has 408 places, 396 transitions, 1556 flow [2022-11-18 18:43:30,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1556, PETRI_PLACES=408, PETRI_TRANSITIONS=396} [2022-11-18 18:43:30,228 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 112 predicate places. [2022-11-18 18:43:30,228 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 396 transitions, 1556 flow [2022-11-18 18:43:30,230 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) [2022-11-18 18:43:30,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:30,231 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:30,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:30,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:43:30,453 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:30,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:30,454 INFO L85 PathProgramCache]: Analyzing trace with hash -634915494, now seen corresponding path program 2 times [2022-11-18 18:43:30,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:30,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115679196] [2022-11-18 18:43:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:30,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:30,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:30,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469364877] [2022-11-18 18:43:30,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:30,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:30,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:30,747 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:30,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:43:31,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:43:31,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:31,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:43:31,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:31,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:43:32,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:43:32,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:32,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:43:32,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:32,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:43:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-18 18:43:32,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:32,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:32,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115679196] [2022-11-18 18:43:32,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:32,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469364877] [2022-11-18 18:43:32,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469364877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:32,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:32,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156569920] [2022-11-18 18:43:32,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:32,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:32,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-18 18:43:32,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 396 transitions, 1556 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) [2022-11-18 18:43:32,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:32,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-18 18:43:32,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:40,123 INFO L130 PetriNetUnfolder]: 2016/8393 cut-off events. [2022-11-18 18:43:40,124 INFO L131 PetriNetUnfolder]: For 3421/3429 co-relation queries the response was YES. [2022-11-18 18:43:40,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17041 conditions, 8393 events. 2016/8393 cut-off events. For 3421/3429 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 45433 event pairs, 810 based on Foata normal form. 0/7822 useless extension candidates. Maximal degree in co-relation 14278. Up to 4169 conditions per place. [2022-11-18 18:43:40,165 INFO L137 encePairwiseOnDemand]: 294/305 looper letters, 253 selfloop transitions, 55 changer transitions 0/546 dead transitions. [2022-11-18 18:43:40,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 546 transitions, 2796 flow [2022-11-18 18:43:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2022-11-18 18:43:40,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7043715846994536 [2022-11-18 18:43:40,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2022-11-18 18:43:40,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2022-11-18 18:43:40,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:40,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2022-11-18 18:43:40,171 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) [2022-11-18 18:43:40,173 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) [2022-11-18 18:43:40,174 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) [2022-11-18 18:43:40,174 INFO L175 Difference]: Start difference. First operand has 408 places, 396 transitions, 1556 flow. Second operand 6 states and 1289 transitions. [2022-11-18 18:43:40,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 546 transitions, 2796 flow [2022-11-18 18:43:40,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 546 transitions, 2740 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 18:43:40,204 INFO L231 Difference]: Finished difference. Result has 400 places, 445 transitions, 2054 flow [2022-11-18 18:43:40,205 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2054, PETRI_PLACES=400, PETRI_TRANSITIONS=445} [2022-11-18 18:43:40,205 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 104 predicate places. [2022-11-18 18:43:40,205 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 445 transitions, 2054 flow [2022-11-18 18:43:40,206 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) [2022-11-18 18:43:40,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:40,207 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:40,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:40,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:43:40,416 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:40,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1276591888, now seen corresponding path program 1 times [2022-11-18 18:43:40,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:40,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576326451] [2022-11-18 18:43:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:40,686 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:40,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593192984] [2022-11-18 18:43:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:40,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:40,694 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:40,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:43:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:42,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 5829 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:43:42,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:45,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:48,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:48,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576326451] [2022-11-18 18:43:48,735 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:48,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593192984] [2022-11-18 18:43:48,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593192984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:48,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:43:48,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 18:43:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806643733] [2022-11-18 18:43:48,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 18:43:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:48,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 18:43:48,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 18:43:48,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-18 18:43:48,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 445 transitions, 2054 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) [2022-11-18 18:43:48,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:48,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-18 18:43:48,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:58,015 INFO L130 PetriNetUnfolder]: 260/7321 cut-off events. [2022-11-18 18:43:58,015 INFO L131 PetriNetUnfolder]: For 5767/5831 co-relation queries the response was YES. [2022-11-18 18:43:58,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11131 conditions, 7321 events. 260/7321 cut-off events. For 5767/5831 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14086 event pairs, 10 based on Foata normal form. 44/7193 useless extension candidates. Maximal degree in co-relation 9350. Up to 197 conditions per place. [2022-11-18 18:43:58,037 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 66 selfloop transitions, 90 changer transitions 0/546 dead transitions. [2022-11-18 18:43:58,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 546 transitions, 3140 flow [2022-11-18 18:43:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 18:43:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 18:43:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 26001 transitions. [2022-11-18 18:43:58,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9472131147540983 [2022-11-18 18:43:58,062 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 26001 transitions. [2022-11-18 18:43:58,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 26001 transitions. [2022-11-18 18:43:58,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:58,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 26001 transitions. [2022-11-18 18:43:58,112 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) [2022-11-18 18:43:58,141 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) [2022-11-18 18:43:58,147 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) [2022-11-18 18:43:58,147 INFO L175 Difference]: Start difference. First operand has 400 places, 445 transitions, 2054 flow. Second operand 90 states and 26001 transitions. [2022-11-18 18:43:58,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 546 transitions, 3140 flow [2022-11-18 18:43:58,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 546 transitions, 3140 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:43:58,183 INFO L231 Difference]: Finished difference. Result has 505 places, 491 transitions, 2708 flow [2022-11-18 18:43:58,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=2708, PETRI_PLACES=505, PETRI_TRANSITIONS=491} [2022-11-18 18:43:58,185 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 209 predicate places. [2022-11-18 18:43:58,185 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 491 transitions, 2708 flow [2022-11-18 18:43:58,188 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) [2022-11-18 18:43:58,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:58,189 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:58,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:58,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:43:58,409 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:43:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1275448139, now seen corresponding path program 2 times [2022-11-18 18:43:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:58,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715496049] [2022-11-18 18:43:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:58,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:58,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:58,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882821828] [2022-11-18 18:43:58,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:58,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:58,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:58,983 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:58,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:44:01,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:44:01,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:01,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:44:01,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:01,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:44:01,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:44:01,356 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:01,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:44:01,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:44:01,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:44:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-18 18:44:01,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:44:01,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:01,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715496049] [2022-11-18 18:44:01,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:01,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882821828] [2022-11-18 18:44:01,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882821828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:01,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:01,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:44:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381140956] [2022-11-18 18:44:01,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:01,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:44:01,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:01,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:44:01,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:44:01,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-18 18:44:01,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 491 transitions, 2708 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) [2022-11-18 18:44:01,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:44:01,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-18 18:44:01,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:44:18,341 INFO L130 PetriNetUnfolder]: 2129/11344 cut-off events. [2022-11-18 18:44:18,341 INFO L131 PetriNetUnfolder]: For 8105/8129 co-relation queries the response was YES. [2022-11-18 18:44:18,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24650 conditions, 11344 events. 2129/11344 cut-off events. For 8105/8129 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 46851 event pairs, 758 based on Foata normal form. 3/10864 useless extension candidates. Maximal degree in co-relation 19243. Up to 5538 conditions per place. [2022-11-18 18:44:18,414 INFO L137 encePairwiseOnDemand]: 294/305 looper letters, 306 selfloop transitions, 79 changer transitions 0/669 dead transitions. [2022-11-18 18:44:18,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 669 transitions, 4466 flow [2022-11-18 18:44:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:44:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:44:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1285 transitions. [2022-11-18 18:44:18,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7021857923497268 [2022-11-18 18:44:18,431 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1285 transitions. [2022-11-18 18:44:18,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1285 transitions. [2022-11-18 18:44:18,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:44:18,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1285 transitions. [2022-11-18 18:44:18,435 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) [2022-11-18 18:44:18,438 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) [2022-11-18 18:44:18,438 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) [2022-11-18 18:44:18,439 INFO L175 Difference]: Start difference. First operand has 505 places, 491 transitions, 2708 flow. Second operand 6 states and 1285 transitions. [2022-11-18 18:44:18,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 669 transitions, 4466 flow [2022-11-18 18:44:18,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 669 transitions, 4348 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 18:44:18,516 INFO L231 Difference]: Finished difference. Result has 473 places, 556 transitions, 3488 flow [2022-11-18 18:44:18,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3488, PETRI_PLACES=473, PETRI_TRANSITIONS=556} [2022-11-18 18:44:18,517 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 177 predicate places. [2022-11-18 18:44:18,518 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 556 transitions, 3488 flow [2022-11-18 18:44:18,518 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) [2022-11-18 18:44:18,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:44:18,519 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:18,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:18,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:44:18,730 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:44:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:18,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1586935174, now seen corresponding path program 1 times [2022-11-18 18:44:18,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:18,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858841168] [2022-11-18 18:44:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:19,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:19,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535757215] [2022-11-18 18:44:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:19,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:19,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:19,287 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:19,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:44:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:23,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 11375 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:44:23,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-18 18:44:29,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-18 18:44:35,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:35,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858841168] [2022-11-18 18:44:35,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:35,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535757215] [2022-11-18 18:44:35,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535757215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:35,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:44:35,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:44:35,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807895866] [2022-11-18 18:44:35,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:44:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:44:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:44:35,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 305 [2022-11-18 18:44:35,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 556 transitions, 3488 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) [2022-11-18 18:44:35,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:44:35,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 305 [2022-11-18 18:44:35,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:44:53,724 INFO L130 PetriNetUnfolder]: 375/10477 cut-off events. [2022-11-18 18:44:53,724 INFO L131 PetriNetUnfolder]: For 7741/7912 co-relation queries the response was YES. [2022-11-18 18:44:53,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16714 conditions, 10477 events. 375/10477 cut-off events. For 7741/7912 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 16881 event pairs, 11 based on Foata normal form. 62/10376 useless extension candidates. Maximal degree in co-relation 13531. Up to 271 conditions per place. [2022-11-18 18:44:53,758 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 22 selfloop transitions, 9 changer transitions 0/571 dead transitions. [2022-11-18 18:44:53,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 571 transitions, 3589 flow [2022-11-18 18:44:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:44:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:44:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2588 transitions. [2022-11-18 18:44:53,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9428051001821494 [2022-11-18 18:44:53,762 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2588 transitions. [2022-11-18 18:44:53,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2588 transitions. [2022-11-18 18:44:53,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:44:53,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2588 transitions. [2022-11-18 18:44:53,768 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) [2022-11-18 18:44:53,771 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) [2022-11-18 18:44:53,771 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) [2022-11-18 18:44:53,772 INFO L175 Difference]: Start difference. First operand has 473 places, 556 transitions, 3488 flow. Second operand 9 states and 2588 transitions. [2022-11-18 18:44:53,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 571 transitions, 3589 flow [2022-11-18 18:44:53,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 571 transitions, 3589 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:44:53,838 INFO L231 Difference]: Finished difference. Result has 484 places, 562 transitions, 3538 flow [2022-11-18 18:44:53,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3488, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3538, PETRI_PLACES=484, PETRI_TRANSITIONS=562} [2022-11-18 18:44:53,839 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 188 predicate places. [2022-11-18 18:44:53,839 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 562 transitions, 3538 flow [2022-11-18 18:44:53,840 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) [2022-11-18 18:44:53,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:44:53,843 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:53,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:54,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:54,059 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:44:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -205919684, now seen corresponding path program 2 times [2022-11-18 18:44:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:54,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509750386] [2022-11-18 18:44:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:55,578 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:44:55,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413057609] [2022-11-18 18:44:55,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:44:55,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:55,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:55,580 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:55,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1663a206-96df-4691-a2dc-0934ea0306bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:45:00,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:45:00,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:45:00,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:45:00,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:45:00,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:45:00,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:45:00,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:45:00,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:45:00,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:45:00,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:45:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-18 18:45:00,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:45:00,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:00,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509750386] [2022-11-18 18:45:00,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:45:00,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413057609] [2022-11-18 18:45:00,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413057609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:00,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:00,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:45:00,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738894692] [2022-11-18 18:45:00,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:00,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:45:00,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:00,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:45:00,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:45:00,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 305 [2022-11-18 18:45:00,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 562 transitions, 3538 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) [2022-11-18 18:45:00,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:45:00,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 305 [2022-11-18 18:45:00,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand