./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 798582ee4a09ede0f5c496225fe921dfd53b0dfd5ded797f7106b8b9ef24e798 --- 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-dbf71c6-m [2022-10-17 10:16:45,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:16:45,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:16:45,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:16:45,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:16:45,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:16:45,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:16:45,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:16:45,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:16:45,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:16:45,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:16:45,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:16:45,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:16:45,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:16:45,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:16:45,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:16:45,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:16:45,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:16:45,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:16:45,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:16:45,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:16:45,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:16:45,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:16:45,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:16:45,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:16:45,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:16:45,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:16:45,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:16:45,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:16:45,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:16:45,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:16:45,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:16:45,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:16:45,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:16:45,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:16:45,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:16:45,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:16:45,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:16:45,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:16:45,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:16:45,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:16:45,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:16:45,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:16:45,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:16:45,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:16:45,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:16:45,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:16:45,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:16:45,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:16:45,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:16:45,316 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:16:45,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:16:45,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:16:45,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:16:45,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:16:45,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:16:45,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:16:45,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:16:45,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:16:45,317 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:16:45,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:16:45,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:16:45,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:16:45,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:16:45,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:16:45,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:16:45,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:45,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:16:45,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:16:45,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:16:45,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:16:45,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:16:45,320 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:16:45,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:16:45,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:16:45,321 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_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 798582ee4a09ede0f5c496225fe921dfd53b0dfd5ded797f7106b8b9ef24e798 [2022-10-17 10:16:45,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:16:45,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:16:45,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:16:45,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:16:45,669 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:16:45,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i [2022-10-17 10:16:45,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/data/e08ba633c/b571adf40b9446749c80b39deb20e133/FLAGa347e8035 [2022-10-17 10:16:46,329 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:16:46,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i [2022-10-17 10:16:46,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/data/e08ba633c/b571adf40b9446749c80b39deb20e133/FLAGa347e8035 [2022-10-17 10:16:46,587 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/data/e08ba633c/b571adf40b9446749c80b39deb20e133 [2022-10-17 10:16:46,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:16:46,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:16:46,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:46,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:16:46,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:16:46,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:46" (1/1) ... [2022-10-17 10:16:46,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24cb5cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:46, skipping insertion in model container [2022-10-17 10:16:46,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:46" (1/1) ... [2022-10-17 10:16:46,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:16:46,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:16:46,925 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i[949,962] [2022-10-17 10:16:47,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:47,268 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:16:47,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i[949,962] [2022-10-17 10:16:47,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:47,416 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:16:47,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47 WrapperNode [2022-10-17 10:16:47,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:47,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:47,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:16:47,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:16:47,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,542 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 291 [2022-10-17 10:16:47,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:47,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:16:47,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:16:47,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:16:47,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,630 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:16:47,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:16:47,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:16:47,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:16:47,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (1/1) ... [2022-10-17 10:16:47,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:47,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:47,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:16:47,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd21252-3096-4009-aa97-3a303123ddf8/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:16:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:16:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:16:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:16:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:16:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:16:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:16:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:16:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:16:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:16:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:16:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:16:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:16:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:16:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:16:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:16:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:16:47,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:16:47,735 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:16:47,957 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:16:47,960 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:16:48,971 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:16:49,541 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:16:49,541 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:16:49,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:49 BoogieIcfgContainer [2022-10-17 10:16:49,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:16:49,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:16:49,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:16:49,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:16:49,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:16:46" (1/3) ... [2022-10-17 10:16:49,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a294c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:49, skipping insertion in model container [2022-10-17 10:16:49,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:47" (2/3) ... [2022-10-17 10:16:49,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a294c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:49, skipping insertion in model container [2022-10-17 10:16:49,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:49" (3/3) ... [2022-10-17 10:16:49,559 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_tso.oepc.i [2022-10-17 10:16:49,569 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:16:49,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:16:49,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:16:49,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:16:49,679 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:16:49,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-10-17 10:16:49,799 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-10-17 10:16:49,799 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:16:49,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-10-17 10:16:49,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-10-17 10:16:49,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-10-17 10:16:49,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:16:49,827 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;@1d0d5993, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:16:49,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:16:49,860 INFO L130 PetriNetUnfolder]: 0/63 cut-off events. [2022-10-17 10:16:49,861 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:16:49,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:49,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:49,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:16:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash 622711834, now seen corresponding path program 1 times [2022-10-17 10:16:49,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:49,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349008851] [2022-10-17 10:16:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:49,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:50,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:50,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349008851] [2022-10-17 10:16:50,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349008851] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:50,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:50,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:16:50,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227594884] [2022-10-17 10:16:50,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:50,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:16:50,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:50,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:16:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:16:50,724 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 136 [2022-10-17 10:16:50,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:50,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:50,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 136 [2022-10-17 10:16:50,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:51,150 INFO L130 PetriNetUnfolder]: 161/674 cut-off events. [2022-10-17 10:16:51,151 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-10-17 10:16:51,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 674 events. 161/674 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3704 event pairs, 35 based on Foata normal form. 27/670 useless extension candidates. Maximal degree in co-relation 919. Up to 187 conditions per place. [2022-10-17 10:16:51,168 INFO L137 encePairwiseOnDemand]: 131/136 looper letters, 17 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-10-17 10:16:51,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 326 flow [2022-10-17 10:16:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:16:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:16:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-10-17 10:16:51,194 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-10-17 10:16:51,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-10-17 10:16:51,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-10-17 10:16:51,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:51,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-10-17 10:16:51,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:51,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:51,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:51,227 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 384 transitions. [2022-10-17 10:16:51,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 326 flow [2022-10-17 10:16:51,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 135 transitions, 320 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:16:51,238 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-10-17 10:16:51,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-10-17 10:16:51,248 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-10-17 10:16:51,248 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-10-17 10:16:51,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:51,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:51,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:51,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:16:51,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:16:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1216340586, now seen corresponding path program 1 times [2022-10-17 10:16:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:51,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617565414] [2022-10-17 10:16:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:51,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:52,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:52,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617565414] [2022-10-17 10:16:52,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617565414] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:52,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:52,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:16:52,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844115644] [2022-10-17 10:16:52,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:52,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:16:52,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:16:52,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:16:52,393 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-10-17 10:16:52,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 112.75) internal successors, (902), 8 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:52,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:52,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-10-17 10:16:52,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:53,872 INFO L130 PetriNetUnfolder]: 1059/3132 cut-off events. [2022-10-17 10:16:53,873 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2022-10-17 10:16:53,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4901 conditions, 3132 events. 1059/3132 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 25996 event pairs, 476 based on Foata normal form. 0/3044 useless extension candidates. Maximal degree in co-relation 4843. Up to 906 conditions per place. [2022-10-17 10:16:53,906 INFO L137 encePairwiseOnDemand]: 123/136 looper letters, 25 selfloop transitions, 11 changer transitions 69/199 dead transitions. [2022-10-17 10:16:53,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 199 transitions, 618 flow [2022-10-17 10:16:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:16:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:16:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1649 transitions. [2022-10-17 10:16:53,914 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8660714285714286 [2022-10-17 10:16:53,914 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1649 transitions. [2022-10-17 10:16:53,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1649 transitions. [2022-10-17 10:16:53,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:53,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1649 transitions. [2022-10-17 10:16:53,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 117.78571428571429) internal successors, (1649), 14 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:53,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 136.0) internal successors, (2040), 15 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:53,974 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 136.0) internal successors, (2040), 15 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:53,974 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 14 states and 1649 transitions. [2022-10-17 10:16:53,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 199 transitions, 618 flow [2022-10-17 10:16:53,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 199 transitions, 600 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:16:53,985 INFO L231 Difference]: Finished difference. Result has 161 places, 122 transitions, 344 flow [2022-10-17 10:16:53,986 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=344, PETRI_PLACES=161, PETRI_TRANSITIONS=122} [2022-10-17 10:16:53,987 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 18 predicate places. [2022-10-17 10:16:53,987 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 122 transitions, 344 flow [2022-10-17 10:16:53,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.75) internal successors, (902), 8 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:53,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:53,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:53,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:16:53,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:16:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1246524072, now seen corresponding path program 1 times [2022-10-17 10:16:53,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:53,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22041583] [2022-10-17 10:16:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:55,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:55,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22041583] [2022-10-17 10:16:55,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22041583] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:55,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:55,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:16:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373189674] [2022-10-17 10:16:55,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:55,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:16:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:16:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:16:55,458 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-10-17 10:16:55,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 122 transitions, 344 flow. Second operand has 10 states, 10 states have (on average 110.7) internal successors, (1107), 10 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:55,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:55,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-10-17 10:16:55,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:56,559 INFO L130 PetriNetUnfolder]: 764/1556 cut-off events. [2022-10-17 10:16:56,559 INFO L131 PetriNetUnfolder]: For 4597/4915 co-relation queries the response was YES. [2022-10-17 10:16:56,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5731 conditions, 1556 events. 764/1556 cut-off events. For 4597/4915 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9794 event pairs, 172 based on Foata normal form. 36/1558 useless extension candidates. Maximal degree in co-relation 5657. Up to 777 conditions per place. [2022-10-17 10:16:56,590 INFO L137 encePairwiseOnDemand]: 123/136 looper letters, 27 selfloop transitions, 14 changer transitions 35/168 dead transitions. [2022-10-17 10:16:56,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 168 transitions, 826 flow [2022-10-17 10:16:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:16:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:16:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1490 transitions. [2022-10-17 10:16:56,599 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8427601809954751 [2022-10-17 10:16:56,600 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1490 transitions. [2022-10-17 10:16:56,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1490 transitions. [2022-10-17 10:16:56,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:56,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1490 transitions. [2022-10-17 10:16:56,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:56,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:56,616 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:56,616 INFO L175 Difference]: Start difference. First operand has 161 places, 122 transitions, 344 flow. Second operand 13 states and 1490 transitions. [2022-10-17 10:16:56,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 168 transitions, 826 flow [2022-10-17 10:16:56,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 168 transitions, 810 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-10-17 10:16:56,638 INFO L231 Difference]: Finished difference. Result has 153 places, 125 transitions, 448 flow [2022-10-17 10:16:56,639 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=448, PETRI_PLACES=153, PETRI_TRANSITIONS=125} [2022-10-17 10:16:56,642 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 10 predicate places. [2022-10-17 10:16:56,642 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 125 transitions, 448 flow [2022-10-17 10:16:56,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.7) internal successors, (1107), 10 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:56,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:56,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:56,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:16:56,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:16:56,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:56,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1106792230, now seen corresponding path program 1 times [2022-10-17 10:16:56,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:56,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860728246] [2022-10-17 10:16:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:56,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:57,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:57,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860728246] [2022-10-17 10:16:57,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860728246] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:57,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:57,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:16:57,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961712300] [2022-10-17 10:16:57,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:57,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:16:57,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:16:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:16:57,455 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-10-17 10:16:57,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 125 transitions, 448 flow. Second operand has 8 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:57,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:57,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-10-17 10:16:57,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:58,772 INFO L130 PetriNetUnfolder]: 778/1768 cut-off events. [2022-10-17 10:16:58,773 INFO L131 PetriNetUnfolder]: For 12988/13232 co-relation queries the response was YES. [2022-10-17 10:16:58,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8354 conditions, 1768 events. 778/1768 cut-off events. For 12988/13232 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11362 event pairs, 252 based on Foata normal form. 32/1747 useless extension candidates. Maximal degree in co-relation 8275. Up to 646 conditions per place. [2022-10-17 10:16:58,810 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 40 selfloop transitions, 9 changer transitions 46/190 dead transitions. [2022-10-17 10:16:58,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 190 transitions, 1322 flow [2022-10-17 10:16:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:16:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:16:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1544 transitions. [2022-10-17 10:16:58,817 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8733031674208145 [2022-10-17 10:16:58,817 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1544 transitions. [2022-10-17 10:16:58,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1544 transitions. [2022-10-17 10:16:58,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:58,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1544 transitions. [2022-10-17 10:16:58,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.76923076923077) internal successors, (1544), 13 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:58,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:58,835 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:58,835 INFO L175 Difference]: Start difference. First operand has 153 places, 125 transitions, 448 flow. Second operand 13 states and 1544 transitions. [2022-10-17 10:16:58,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 190 transitions, 1322 flow [2022-10-17 10:16:58,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 190 transitions, 1261 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-10-17 10:16:58,858 INFO L231 Difference]: Finished difference. Result has 161 places, 130 transitions, 527 flow [2022-10-17 10:16:58,864 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=527, PETRI_PLACES=161, PETRI_TRANSITIONS=130} [2022-10-17 10:16:58,865 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 18 predicate places. [2022-10-17 10:16:58,866 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 130 transitions, 527 flow [2022-10-17 10:16:58,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:58,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:58,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:58,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:16:58,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:16:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2086389198, now seen corresponding path program 2 times [2022-10-17 10:16:58,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:58,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755903025] [2022-10-17 10:16:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:59,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:59,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755903025] [2022-10-17 10:16:59,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755903025] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:59,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:59,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:16:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759706227] [2022-10-17 10:16:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:59,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:16:59,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:59,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:16:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:16:59,869 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-10-17 10:16:59,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 130 transitions, 527 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:59,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-10-17 10:16:59,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:01,177 INFO L130 PetriNetUnfolder]: 763/1665 cut-off events. [2022-10-17 10:17:01,177 INFO L131 PetriNetUnfolder]: For 23965/24478 co-relation queries the response was YES. [2022-10-17 10:17:01,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10495 conditions, 1665 events. 763/1665 cut-off events. For 23965/24478 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10546 event pairs, 253 based on Foata normal form. 39/1652 useless extension candidates. Maximal degree in co-relation 10409. Up to 642 conditions per place. [2022-10-17 10:17:01,221 INFO L137 encePairwiseOnDemand]: 123/136 looper letters, 41 selfloop transitions, 15 changer transitions 46/194 dead transitions. [2022-10-17 10:17:01,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 194 transitions, 1731 flow [2022-10-17 10:17:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:17:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:17:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1835 transitions. [2022-10-17 10:17:01,229 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8432904411764706 [2022-10-17 10:17:01,229 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1835 transitions. [2022-10-17 10:17:01,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1835 transitions. [2022-10-17 10:17:01,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:01,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1835 transitions. [2022-10-17 10:17:01,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 114.6875) internal successors, (1835), 16 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:01,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 136.0) internal successors, (2312), 17 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) [2022-10-17 10:17:01,249 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 136.0) internal successors, (2312), 17 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) [2022-10-17 10:17:01,249 INFO L175 Difference]: Start difference. First operand has 161 places, 130 transitions, 527 flow. Second operand 16 states and 1835 transitions. [2022-10-17 10:17:01,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 194 transitions, 1731 flow [2022-10-17 10:17:01,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 194 transitions, 1438 flow, removed 141 selfloop flow, removed 10 redundant places. [2022-10-17 10:17:01,282 INFO L231 Difference]: Finished difference. Result has 167 places, 134 transitions, 589 flow [2022-10-17 10:17:01,283 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=589, PETRI_PLACES=167, PETRI_TRANSITIONS=134} [2022-10-17 10:17:01,286 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 24 predicate places. [2022-10-17 10:17:01,286 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 134 transitions, 589 flow [2022-10-17 10:17:01,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:01,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:01,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:01,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:17:01,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:17:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1598989416, now seen corresponding path program 1 times [2022-10-17 10:17:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:01,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51182607] [2022-10-17 10:17:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:02,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:02,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51182607] [2022-10-17 10:17:02,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51182607] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:02,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:02,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:17:02,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213597669] [2022-10-17 10:17:02,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:17:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:02,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:17:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:17:02,198 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-10-17 10:17:02,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 134 transitions, 589 flow. Second operand has 11 states, 11 states have (on average 110.63636363636364) internal successors, (1217), 11 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:02,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:02,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-10-17 10:17:02,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:03,236 INFO L130 PetriNetUnfolder]: 628/1482 cut-off events. [2022-10-17 10:17:03,236 INFO L131 PetriNetUnfolder]: For 22803/23320 co-relation queries the response was YES. [2022-10-17 10:17:03,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9178 conditions, 1482 events. 628/1482 cut-off events. For 22803/23320 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9314 event pairs, 200 based on Foata normal form. 28/1456 useless extension candidates. Maximal degree in co-relation 9087. Up to 650 conditions per place. [2022-10-17 10:17:03,285 INFO L137 encePairwiseOnDemand]: 123/136 looper letters, 44 selfloop transitions, 16 changer transitions 25/177 dead transitions. [2022-10-17 10:17:03,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 177 transitions, 1473 flow [2022-10-17 10:17:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:17:03,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:17:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1486 transitions. [2022-10-17 10:17:03,348 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8404977375565611 [2022-10-17 10:17:03,348 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1486 transitions. [2022-10-17 10:17:03,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1486 transitions. [2022-10-17 10:17:03,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:03,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1486 transitions. [2022-10-17 10:17:03,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.3076923076923) internal successors, (1486), 13 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:03,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:03,363 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:03,363 INFO L175 Difference]: Start difference. First operand has 167 places, 134 transitions, 589 flow. Second operand 13 states and 1486 transitions. [2022-10-17 10:17:03,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 177 transitions, 1473 flow [2022-10-17 10:17:03,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 177 transitions, 1232 flow, removed 113 selfloop flow, removed 13 redundant places. [2022-10-17 10:17:03,387 INFO L231 Difference]: Finished difference. Result has 164 places, 138 transitions, 619 flow [2022-10-17 10:17:03,388 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=619, PETRI_PLACES=164, PETRI_TRANSITIONS=138} [2022-10-17 10:17:03,389 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 21 predicate places. [2022-10-17 10:17:03,389 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 138 transitions, 619 flow [2022-10-17 10:17:03,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.63636363636364) internal successors, (1217), 11 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:03,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:03,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:03,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:17:03,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:17:03,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash -985332716, now seen corresponding path program 2 times [2022-10-17 10:17:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:03,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579804041] [2022-10-17 10:17:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:03,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:04,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579804041] [2022-10-17 10:17:04,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579804041] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:04,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:04,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-10-17 10:17:04,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205527443] [2022-10-17 10:17:04,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:04,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:17:04,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:04,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:17:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:17:04,798 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 136 [2022-10-17 10:17:04,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 138 transitions, 619 flow. Second operand has 14 states, 14 states have (on average 108.42857142857143) internal successors, (1518), 14 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:04,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:04,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 136 [2022-10-17 10:17:04,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:06,002 INFO L130 PetriNetUnfolder]: 632/1503 cut-off events. [2022-10-17 10:17:06,002 INFO L131 PetriNetUnfolder]: For 17313/18093 co-relation queries the response was YES. [2022-10-17 10:17:06,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8461 conditions, 1503 events. 632/1503 cut-off events. For 17313/18093 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9441 event pairs, 190 based on Foata normal form. 35/1484 useless extension candidates. Maximal degree in co-relation 8369. Up to 648 conditions per place. [2022-10-17 10:17:06,044 INFO L137 encePairwiseOnDemand]: 122/136 looper letters, 44 selfloop transitions, 21 changer transitions 37/192 dead transitions. [2022-10-17 10:17:06,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 192 transitions, 1669 flow [2022-10-17 10:17:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 10:17:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-10-17 10:17:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2010 transitions. [2022-10-17 10:17:06,060 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.821078431372549 [2022-10-17 10:17:06,060 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2010 transitions. [2022-10-17 10:17:06,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2010 transitions. [2022-10-17 10:17:06,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:06,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2010 transitions. [2022-10-17 10:17:06,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 111.66666666666667) internal successors, (2010), 18 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:06,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 136.0) internal successors, (2584), 19 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:06,078 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 136.0) internal successors, (2584), 19 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:06,079 INFO L175 Difference]: Start difference. First operand has 164 places, 138 transitions, 619 flow. Second operand 18 states and 2010 transitions. [2022-10-17 10:17:06,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 192 transitions, 1669 flow [2022-10-17 10:17:06,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 192 transitions, 1543 flow, removed 45 selfloop flow, removed 11 redundant places. [2022-10-17 10:17:06,104 INFO L231 Difference]: Finished difference. Result has 174 places, 141 transitions, 694 flow [2022-10-17 10:17:06,105 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=694, PETRI_PLACES=174, PETRI_TRANSITIONS=141} [2022-10-17 10:17:06,106 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 31 predicate places. [2022-10-17 10:17:06,106 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 141 transitions, 694 flow [2022-10-17 10:17:06,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 108.42857142857143) internal successors, (1518), 14 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:06,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:06,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:06,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:17:06,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:17:06,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:06,109 INFO L85 PathProgramCache]: Analyzing trace with hash -184029273, now seen corresponding path program 1 times [2022-10-17 10:17:06,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:06,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241349225] [2022-10-17 10:17:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:06,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:06,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:06,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241349225] [2022-10-17 10:17:06,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241349225] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:06,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:06,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:17:06,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907844846] [2022-10-17 10:17:06,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:06,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:17:06,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:17:06,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:17:06,443 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-10-17 10:17:06,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 141 transitions, 694 flow. Second operand has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:06,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:06,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-10-17 10:17:06,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:09,481 INFO L130 PetriNetUnfolder]: 5348/9021 cut-off events. [2022-10-17 10:17:09,481 INFO L131 PetriNetUnfolder]: For 168052/168649 co-relation queries the response was YES. [2022-10-17 10:17:09,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47743 conditions, 9021 events. 5348/9021 cut-off events. For 168052/168649 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 66453 event pairs, 146 based on Foata normal form. 583/9449 useless extension candidates. Maximal degree in co-relation 47651. Up to 3262 conditions per place. [2022-10-17 10:17:09,640 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 131 selfloop transitions, 18 changer transitions 50/293 dead transitions. [2022-10-17 10:17:09,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 293 transitions, 2655 flow [2022-10-17 10:17:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:17:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:17:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1190 transitions. [2022-10-17 10:17:09,646 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-10-17 10:17:09,647 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1190 transitions. [2022-10-17 10:17:09,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1190 transitions. [2022-10-17 10:17:09,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:09,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1190 transitions. [2022-10-17 10:17:09,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:09,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:09,657 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:09,658 INFO L175 Difference]: Start difference. First operand has 174 places, 141 transitions, 694 flow. Second operand 10 states and 1190 transitions. [2022-10-17 10:17:09,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 293 transitions, 2655 flow [2022-10-17 10:17:09,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 293 transitions, 2456 flow, removed 77 selfloop flow, removed 15 redundant places. [2022-10-17 10:17:09,737 INFO L231 Difference]: Finished difference. Result has 165 places, 157 transitions, 739 flow [2022-10-17 10:17:09,737 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=739, PETRI_PLACES=165, PETRI_TRANSITIONS=157} [2022-10-17 10:17:09,740 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 22 predicate places. [2022-10-17 10:17:09,740 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 157 transitions, 739 flow [2022-10-17 10:17:09,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:09,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:09,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:09,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:17:09,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:17:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:09,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1405702178, now seen corresponding path program 1 times [2022-10-17 10:17:09,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:09,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950400732] [2022-10-17 10:17:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:09,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:10,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:10,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950400732] [2022-10-17 10:17:10,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950400732] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:10,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:10,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:17:10,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424421922] [2022-10-17 10:17:10,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:10,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:17:10,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:10,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:17:10,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:17:10,105 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-10-17 10:17:10,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 157 transitions, 739 flow. Second operand has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:10,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:10,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-10-17 10:17:10,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand