./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc --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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:15:36,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:15:36,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:15:36,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:15:36,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:15:36,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:15:36,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:15:36,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:15:36,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:15:36,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:15:36,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:15:36,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:15:36,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:15:36,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:15:36,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:15:36,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:15:36,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:15:36,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:15:36,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:15:36,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:15:36,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:15:36,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:15:36,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:15:36,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:15:36,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:15:36,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:15:36,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:15:36,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:15:36,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:15:36,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:15:36,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:15:36,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:15:36,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:15:36,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:15:36,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:15:36,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:15:36,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:15:36,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:15:36,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:15:36,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:15:36,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:15:36,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:15:36,567 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:15:36,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:15:36,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:15:36,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:15:36,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:15:36,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:15:36,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:15:36,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:15:36,570 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:15:36,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:15:36,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:15:36,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:15:36,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:15:36,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:15:36,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:15:36,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:15:36,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:15:36,572 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:15:36,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:15:36,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:15:36,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:15:36,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:15:36,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:15:36,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:15:36,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:15:36,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:15:36,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:15:36,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:15:36,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:15:36,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:15:36,575 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:15:36,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:15:36,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:15:36,575 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_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-11-02 20:15:36,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:15:36,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:15:36,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:15:36,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:15:36,869 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:15:36,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-02 20:15:36,959 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/data/5ff9844ac/a1549a37e4224255a16af5201caa80e2/FLAG16748aa0d [2022-11-02 20:15:37,376 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:15:37,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-02 20:15:37,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/data/5ff9844ac/a1549a37e4224255a16af5201caa80e2/FLAG16748aa0d [2022-11-02 20:15:37,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/data/5ff9844ac/a1549a37e4224255a16af5201caa80e2 [2022-11-02 20:15:37,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:15:37,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:15:37,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:15:37,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:15:37,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:15:37,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:15:37" (1/1) ... [2022-11-02 20:15:37,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4480d450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:37, skipping insertion in model container [2022-11-02 20:15:37,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:15:37" (1/1) ... [2022-11-02 20:15:37,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:15:37,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:15:38,024 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_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-02 20:15:38,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:15:38,042 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:15:38,079 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_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-02 20:15:38,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:15:38,102 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:15:38,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38 WrapperNode [2022-11-02 20:15:38,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:15:38,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:15:38,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:15:38,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:15:38,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,183 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 452 [2022-11-02 20:15:38,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:15:38,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:15:38,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:15:38,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:15:38,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:15:38,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:15:38,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:15:38,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:15:38,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (1/1) ... [2022-11-02 20:15:38,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:15:38,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:38,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:15:38,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:15:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:15:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:15:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:15:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:15:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:15:38,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:15:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:15:38,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:15:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:15:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:15:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:15:38,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:15:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:15:38,353 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:15:38,503 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:15:38,505 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:15:39,384 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:15:39,398 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:15:39,404 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:15:39,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:15:39 BoogieIcfgContainer [2022-11-02 20:15:39,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:15:39,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:15:39,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:15:39,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:15:39,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:15:37" (1/3) ... [2022-11-02 20:15:39,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c20aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:15:39, skipping insertion in model container [2022-11-02 20:15:39,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:38" (2/3) ... [2022-11-02 20:15:39,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c20aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:15:39, skipping insertion in model container [2022-11-02 20:15:39,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:15:39" (3/3) ... [2022-11-02 20:15:39,423 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-11-02 20:15:39,433 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:15:39,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:15:39,444 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:15:39,444 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:15:39,615 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:15:39,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 538 places, 596 transitions, 1208 flow [2022-11-02 20:15:40,005 INFO L130 PetriNetUnfolder]: 65/594 cut-off events. [2022-11-02 20:15:40,006 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:15:40,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 594 events. 65/594 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1766 event pairs, 0 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 413. Up to 2 conditions per place. [2022-11-02 20:15:40,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 538 places, 596 transitions, 1208 flow [2022-11-02 20:15:40,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 527 places, 585 transitions, 1182 flow [2022-11-02 20:15:40,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:15:40,075 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;@68ff1f02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:15:40,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:15:40,217 INFO L130 PetriNetUnfolder]: 57/539 cut-off events. [2022-11-02 20:15:40,218 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:15:40,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:40,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:40,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:40,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1426659335, now seen corresponding path program 1 times [2022-11-02 20:15:40,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:40,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814956345] [2022-11-02 20:15:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:40,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:40,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814956345] [2022-11-02 20:15:40,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814956345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:40,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:40,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:15:40,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468298541] [2022-11-02 20:15:40,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:40,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:15:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:40,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:15:40,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:15:40,667 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 596 [2022-11-02 20:15:40,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 585 transitions, 1182 flow. Second operand has 2 states, 2 states have (on average 568.5) internal successors, (1137), 2 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:40,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:40,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 596 [2022-11-02 20:15:40,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:40,870 INFO L130 PetriNetUnfolder]: 40/560 cut-off events. [2022-11-02 20:15:40,870 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-02 20:15:40,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 560 events. 40/560 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1691 event pairs, 0 based on Foata normal form. 30/529 useless extension candidates. Maximal degree in co-relation 396. Up to 5 conditions per place. [2022-11-02 20:15:40,884 INFO L137 encePairwiseOnDemand]: 571/596 looper letters, 4 selfloop transitions, 0 changer transitions 5/560 dead transitions. [2022-11-02 20:15:40,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 560 transitions, 1140 flow [2022-11-02 20:15:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:15:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:15:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1161 transitions. [2022-11-02 20:15:40,904 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9739932885906041 [2022-11-02 20:15:40,905 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1161 transitions. [2022-11-02 20:15:40,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1161 transitions. [2022-11-02 20:15:40,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:40,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1161 transitions. [2022-11-02 20:15:40,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 580.5) internal successors, (1161), 2 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:40,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:40,940 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:40,947 INFO L175 Difference]: Start difference. First operand has 527 places, 585 transitions, 1182 flow. Second operand 2 states and 1161 transitions. [2022-11-02 20:15:40,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 560 transitions, 1140 flow [2022-11-02 20:15:40,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 560 transitions, 1132 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:15:40,967 INFO L231 Difference]: Finished difference. Result has 524 places, 555 transitions, 1114 flow [2022-11-02 20:15:40,970 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1114, PETRI_PLACES=524, PETRI_TRANSITIONS=555} [2022-11-02 20:15:40,973 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, -3 predicate places. [2022-11-02 20:15:40,974 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 555 transitions, 1114 flow [2022-11-02 20:15:40,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 568.5) internal successors, (1137), 2 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:40,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:40,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:40,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:15:40,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash 473457702, now seen corresponding path program 1 times [2022-11-02 20:15:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:40,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374950680] [2022-11-02 20:15:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:40,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:41,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374950680] [2022-11-02 20:15:41,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374950680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:41,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:41,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:41,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797364215] [2022-11-02 20:15:41,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:41,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:41,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:41,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:41,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 596 [2022-11-02 20:15:41,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 555 transitions, 1114 flow. Second operand has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:41,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:41,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 596 [2022-11-02 20:15:41,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:41,740 INFO L130 PetriNetUnfolder]: 177/1911 cut-off events. [2022-11-02 20:15:41,741 INFO L131 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2022-11-02 20:15:41,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1911 events. 177/1911 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 14040 event pairs, 36 based on Foata normal form. 1/1696 useless extension candidates. Maximal degree in co-relation 2047. Up to 87 conditions per place. [2022-11-02 20:15:41,760 INFO L137 encePairwiseOnDemand]: 590/596 looper letters, 27 selfloop transitions, 4 changer transitions 0/568 dead transitions. [2022-11-02 20:15:41,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 568 transitions, 1205 flow [2022-11-02 20:15:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:15:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1689 transitions. [2022-11-02 20:15:41,765 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9446308724832215 [2022-11-02 20:15:41,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1689 transitions. [2022-11-02 20:15:41,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1689 transitions. [2022-11-02 20:15:41,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:41,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1689 transitions. [2022-11-02 20:15:41,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 563.0) internal successors, (1689), 3 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:41,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:41,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:41,776 INFO L175 Difference]: Start difference. First operand has 524 places, 555 transitions, 1114 flow. Second operand 3 states and 1689 transitions. [2022-11-02 20:15:41,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 568 transitions, 1205 flow [2022-11-02 20:15:41,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 568 transitions, 1205 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:15:41,788 INFO L231 Difference]: Finished difference. Result has 523 places, 557 transitions, 1142 flow [2022-11-02 20:15:41,789 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1142, PETRI_PLACES=523, PETRI_TRANSITIONS=557} [2022-11-02 20:15:41,789 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, -4 predicate places. [2022-11-02 20:15:41,790 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 557 transitions, 1142 flow [2022-11-02 20:15:41,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:41,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:41,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:41,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:15:41,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:41,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1586291922, now seen corresponding path program 2 times [2022-11-02 20:15:41,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:41,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887318765] [2022-11-02 20:15:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:41,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:42,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887318765] [2022-11-02 20:15:42,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887318765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:42,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:42,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985696096] [2022-11-02 20:15:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:42,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:42,007 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 596 [2022-11-02 20:15:42,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 557 transitions, 1142 flow. Second operand has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:42,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:42,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 596 [2022-11-02 20:15:42,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:42,404 INFO L130 PetriNetUnfolder]: 168/1861 cut-off events. [2022-11-02 20:15:42,404 INFO L131 PetriNetUnfolder]: For 77/82 co-relation queries the response was YES. [2022-11-02 20:15:42,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 1861 events. 168/1861 cut-off events. For 77/82 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13750 event pairs, 39 based on Foata normal form. 4/1689 useless extension candidates. Maximal degree in co-relation 2053. Up to 100 conditions per place. [2022-11-02 20:15:42,425 INFO L137 encePairwiseOnDemand]: 590/596 looper letters, 29 selfloop transitions, 4 changer transitions 0/570 dead transitions. [2022-11-02 20:15:42,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 570 transitions, 1241 flow [2022-11-02 20:15:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:15:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1689 transitions. [2022-11-02 20:15:42,430 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9446308724832215 [2022-11-02 20:15:42,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1689 transitions. [2022-11-02 20:15:42,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1689 transitions. [2022-11-02 20:15:42,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:42,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1689 transitions. [2022-11-02 20:15:42,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 563.0) internal successors, (1689), 3 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:42,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:42,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:42,443 INFO L175 Difference]: Start difference. First operand has 523 places, 557 transitions, 1142 flow. Second operand 3 states and 1689 transitions. [2022-11-02 20:15:42,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 570 transitions, 1241 flow [2022-11-02 20:15:42,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 570 transitions, 1233 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:15:42,459 INFO L231 Difference]: Finished difference. Result has 525 places, 559 transitions, 1166 flow [2022-11-02 20:15:42,460 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1166, PETRI_PLACES=525, PETRI_TRANSITIONS=559} [2022-11-02 20:15:42,463 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, -2 predicate places. [2022-11-02 20:15:42,463 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 559 transitions, 1166 flow [2022-11-02 20:15:42,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:42,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:42,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:42,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:15:42,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:42,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1976754200, now seen corresponding path program 1 times [2022-11-02 20:15:42,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:42,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890301944] [2022-11-02 20:15:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:42,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:42,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:42,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890301944] [2022-11-02 20:15:42,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890301944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:42,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:42,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:15:42,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617079465] [2022-11-02 20:15:42,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:42,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:15:42,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:42,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:15:42,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:42,724 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 544 out of 596 [2022-11-02 20:15:42,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 559 transitions, 1166 flow. Second operand has 5 states, 5 states have (on average 547.6) internal successors, (2738), 5 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:42,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:42,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 544 of 596 [2022-11-02 20:15:42,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:43,006 INFO L130 PetriNetUnfolder]: 50/678 cut-off events. [2022-11-02 20:15:43,006 INFO L131 PetriNetUnfolder]: For 23/39 co-relation queries the response was YES. [2022-11-02 20:15:43,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 678 events. 50/678 cut-off events. For 23/39 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2567 event pairs, 0 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 744. Up to 31 conditions per place. [2022-11-02 20:15:43,021 INFO L137 encePairwiseOnDemand]: 586/596 looper letters, 26 selfloop transitions, 8 changer transitions 0/567 dead transitions. [2022-11-02 20:15:43,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 567 transitions, 1250 flow [2022-11-02 20:15:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:15:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:15:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2756 transitions. [2022-11-02 20:15:43,029 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9248322147651007 [2022-11-02 20:15:43,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2756 transitions. [2022-11-02 20:15:43,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2756 transitions. [2022-11-02 20:15:43,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:43,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2756 transitions. [2022-11-02 20:15:43,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 551.2) internal successors, (2756), 5 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:43,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:43,054 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:43,054 INFO L175 Difference]: Start difference. First operand has 525 places, 559 transitions, 1166 flow. Second operand 5 states and 2756 transitions. [2022-11-02 20:15:43,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 567 transitions, 1250 flow [2022-11-02 20:15:43,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 567 transitions, 1242 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:15:43,069 INFO L231 Difference]: Finished difference. Result has 528 places, 561 transitions, 1190 flow [2022-11-02 20:15:43,071 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1190, PETRI_PLACES=528, PETRI_TRANSITIONS=561} [2022-11-02 20:15:43,072 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 1 predicate places. [2022-11-02 20:15:43,073 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 561 transitions, 1190 flow [2022-11-02 20:15:43,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 547.6) internal successors, (2738), 5 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:43,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:43,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:43,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:15:43,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:43,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1612412822, now seen corresponding path program 1 times [2022-11-02 20:15:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:43,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879431146] [2022-11-02 20:15:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:15:43,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:43,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879431146] [2022-11-02 20:15:43,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879431146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:43,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008891904] [2022-11-02 20:15:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:43,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:43,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:43,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:43,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:15:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:43,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:15:43,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:15:43,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:15:43,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008891904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:43,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:15:43,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-02 20:15:43,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743185458] [2022-11-02 20:15:43,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:43,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:15:43,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:43,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:15:43,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:15:43,934 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 596 [2022-11-02 20:15:43,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 561 transitions, 1190 flow. Second operand has 15 states, 15 states have (on average 545.1333333333333) internal successors, (8177), 15 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:43,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:43,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 596 [2022-11-02 20:15:43,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:44,363 INFO L130 PetriNetUnfolder]: 50/694 cut-off events. [2022-11-02 20:15:44,363 INFO L131 PetriNetUnfolder]: For 23/39 co-relation queries the response was YES. [2022-11-02 20:15:44,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 694 events. 50/694 cut-off events. For 23/39 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2540 event pairs, 0 based on Foata normal form. 4/637 useless extension candidates. Maximal degree in co-relation 788. Up to 25 conditions per place. [2022-11-02 20:15:44,380 INFO L137 encePairwiseOnDemand]: 580/596 looper letters, 28 selfloop transitions, 22 changer transitions 0/581 dead transitions. [2022-11-02 20:15:44,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 581 transitions, 1334 flow [2022-11-02 20:15:44,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:15:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:15:44,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6016 transitions. [2022-11-02 20:15:44,392 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9176327028676022 [2022-11-02 20:15:44,392 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 6016 transitions. [2022-11-02 20:15:44,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 6016 transitions. [2022-11-02 20:15:44,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:44,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 6016 transitions. [2022-11-02 20:15:44,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 546.9090909090909) internal successors, (6016), 11 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:44,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 596.0) internal successors, (7152), 12 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:44,447 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 596.0) internal successors, (7152), 12 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:44,447 INFO L175 Difference]: Start difference. First operand has 528 places, 561 transitions, 1190 flow. Second operand 11 states and 6016 transitions. [2022-11-02 20:15:44,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 581 transitions, 1334 flow [2022-11-02 20:15:44,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 581 transitions, 1322 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:15:44,460 INFO L231 Difference]: Finished difference. Result has 538 places, 573 transitions, 1289 flow [2022-11-02 20:15:44,461 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1289, PETRI_PLACES=538, PETRI_TRANSITIONS=573} [2022-11-02 20:15:44,462 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 11 predicate places. [2022-11-02 20:15:44,462 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 573 transitions, 1289 flow [2022-11-02 20:15:44,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 545.1333333333333) internal successors, (8177), 15 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:44,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:44,466 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:44,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:15:44,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:44,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:44,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash -226902670, now seen corresponding path program 2 times [2022-11-02 20:15:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:44,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777621471] [2022-11-02 20:15:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:44,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:15:45,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:45,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777621471] [2022-11-02 20:15:45,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777621471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:45,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687055627] [2022-11-02 20:15:45,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:15:45,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:45,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:45,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:45,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:15:45,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:15:45,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:15:45,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:15:45,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:15:45,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:45,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687055627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:45,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:15:45,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-02 20:15:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423751028] [2022-11-02 20:15:45,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:45,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:15:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:15:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:15:45,319 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 596 [2022-11-02 20:15:45,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 573 transitions, 1289 flow. Second operand has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:45,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:45,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 596 [2022-11-02 20:15:45,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:45,812 INFO L130 PetriNetUnfolder]: 149/1715 cut-off events. [2022-11-02 20:15:45,813 INFO L131 PetriNetUnfolder]: For 31/60 co-relation queries the response was YES. [2022-11-02 20:15:45,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 1715 events. 149/1715 cut-off events. For 31/60 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10572 event pairs, 17 based on Foata normal form. 10/1550 useless extension candidates. Maximal degree in co-relation 1920. Up to 76 conditions per place. [2022-11-02 20:15:45,837 INFO L137 encePairwiseOnDemand]: 589/596 looper letters, 33 selfloop transitions, 5 changer transitions 0/586 dead transitions. [2022-11-02 20:15:45,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 586 transitions, 1398 flow [2022-11-02 20:15:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:15:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3855 transitions. [2022-11-02 20:15:45,847 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9240172579098753 [2022-11-02 20:15:45,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3855 transitions. [2022-11-02 20:15:45,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3855 transitions. [2022-11-02 20:15:45,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:45,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3855 transitions. [2022-11-02 20:15:45,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 550.7142857142857) internal successors, (3855), 7 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:45,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:45,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:45,871 INFO L175 Difference]: Start difference. First operand has 538 places, 573 transitions, 1289 flow. Second operand 7 states and 3855 transitions. [2022-11-02 20:15:45,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 586 transitions, 1398 flow [2022-11-02 20:15:45,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 586 transitions, 1381 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-02 20:15:45,889 INFO L231 Difference]: Finished difference. Result has 546 places, 577 transitions, 1311 flow [2022-11-02 20:15:45,890 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1311, PETRI_PLACES=546, PETRI_TRANSITIONS=577} [2022-11-02 20:15:45,891 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 19 predicate places. [2022-11-02 20:15:45,891 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 577 transitions, 1311 flow [2022-11-02 20:15:45,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:45,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:45,893 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:45,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:15:46,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:15:46,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:46,119 INFO L85 PathProgramCache]: Analyzing trace with hash 755089234, now seen corresponding path program 1 times [2022-11-02 20:15:46,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:46,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840733829] [2022-11-02 20:15:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:46,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:15:46,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:46,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840733829] [2022-11-02 20:15:46,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840733829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:46,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548421448] [2022-11-02 20:15:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:46,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:46,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:46,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:46,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:15:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:46,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:15:46,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:15:46,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:15:47,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548421448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:47,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:15:47,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-02 20:15:47,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025142895] [2022-11-02 20:15:47,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:47,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:15:47,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:47,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:15:47,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:15:47,121 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 596 [2022-11-02 20:15:47,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 577 transitions, 1311 flow. Second operand has 22 states, 22 states have (on average 545.0454545454545) internal successors, (11991), 22 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:47,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:47,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 596 [2022-11-02 20:15:47,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:47,697 INFO L130 PetriNetUnfolder]: 51/742 cut-off events. [2022-11-02 20:15:47,697 INFO L131 PetriNetUnfolder]: For 51/67 co-relation queries the response was YES. [2022-11-02 20:15:47,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 742 events. 51/742 cut-off events. For 51/67 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2776 event pairs, 0 based on Foata normal form. 4/689 useless extension candidates. Maximal degree in co-relation 933. Up to 25 conditions per place. [2022-11-02 20:15:47,713 INFO L137 encePairwiseOnDemand]: 580/596 looper letters, 36 selfloop transitions, 34 changer transitions 0/605 dead transitions. [2022-11-02 20:15:47,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 605 transitions, 1563 flow [2022-11-02 20:15:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:15:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:15:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 9288 transitions. [2022-11-02 20:15:47,731 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9166995657323332 [2022-11-02 20:15:47,731 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 9288 transitions. [2022-11-02 20:15:47,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 9288 transitions. [2022-11-02 20:15:47,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:47,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 9288 transitions. [2022-11-02 20:15:47,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 546.3529411764706) internal successors, (9288), 17 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:47,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 596.0) internal successors, (10728), 18 states have internal predecessors, (10728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:47,778 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 596.0) internal successors, (10728), 18 states have internal predecessors, (10728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:47,778 INFO L175 Difference]: Start difference. First operand has 546 places, 577 transitions, 1311 flow. Second operand 17 states and 9288 transitions. [2022-11-02 20:15:47,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 605 transitions, 1563 flow [2022-11-02 20:15:47,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 605 transitions, 1562 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:15:47,793 INFO L231 Difference]: Finished difference. Result has 564 places, 591 transitions, 1485 flow [2022-11-02 20:15:47,794 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1485, PETRI_PLACES=564, PETRI_TRANSITIONS=591} [2022-11-02 20:15:47,796 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 37 predicate places. [2022-11-02 20:15:47,796 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 591 transitions, 1485 flow [2022-11-02 20:15:47,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 545.0454545454545) internal successors, (11991), 22 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:47,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:47,800 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:47,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:48,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab3a95b0-05b5-4424-bbc3-055e437a8dc9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:48,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1039231050, now seen corresponding path program 2 times [2022-11-02 20:15:48,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:48,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561329859] [2022-11-02 20:15:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:48,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:48,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561329859] [2022-11-02 20:15:48,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561329859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:48,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:48,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:15:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725972881] [2022-11-02 20:15:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:48,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:15:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:48,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:15:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:48,230 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 596 [2022-11-02 20:15:48,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 591 transitions, 1485 flow. Second operand has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:48,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:48,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 596 [2022-11-02 20:15:48,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:48,618 INFO L130 PetriNetUnfolder]: 142/1208 cut-off events. [2022-11-02 20:15:48,618 INFO L131 PetriNetUnfolder]: For 112/122 co-relation queries the response was YES. [2022-11-02 20:15:48,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 1208 events. 142/1208 cut-off events. For 112/122 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5971 event pairs, 37 based on Foata normal form. 0/1079 useless extension candidates. Maximal degree in co-relation 1549. Up to 143 conditions per place. [2022-11-02 20:15:48,635 INFO L137 encePairwiseOnDemand]: 589/596 looper letters, 32 selfloop transitions, 5 changer transitions 0/603 dead transitions. [2022-11-02 20:15:48,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 603 transitions, 1589 flow [2022-11-02 20:15:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:15:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3854 transitions. [2022-11-02 20:15:48,644 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.923777564717162 [2022-11-02 20:15:48,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3854 transitions. [2022-11-02 20:15:48,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3854 transitions. [2022-11-02 20:15:48,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:48,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3854 transitions. [2022-11-02 20:15:48,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 550.5714285714286) internal successors, (3854), 7 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:48,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:48,665 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:48,665 INFO L175 Difference]: Start difference. First operand has 564 places, 591 transitions, 1485 flow. Second operand 7 states and 3854 transitions. [2022-11-02 20:15:48,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 603 transitions, 1589 flow [2022-11-02 20:15:48,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 603 transitions, 1544 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-11-02 20:15:48,679 INFO L231 Difference]: Finished difference. Result has 567 places, 595 transitions, 1479 flow [2022-11-02 20:15:48,680 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1479, PETRI_PLACES=567, PETRI_TRANSITIONS=595} [2022-11-02 20:15:48,681 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 40 predicate places. [2022-11-02 20:15:48,681 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 595 transitions, 1479 flow [2022-11-02 20:15:48,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:48,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:48,683 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:48,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:15:48,683 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash 514282158, now seen corresponding path program 1 times [2022-11-02 20:15:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:48,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296573932] [2022-11-02 20:15:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:48,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:49,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:49,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296573932] [2022-11-02 20:15:49,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296573932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:49,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:49,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:15:49,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41837844] [2022-11-02 20:15:49,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:49,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:15:49,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:49,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:15:49,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:15:49,069 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 596 [2022-11-02 20:15:49,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 595 transitions, 1479 flow. Second operand has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:49,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:49,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 596 [2022-11-02 20:15:49,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:49,422 INFO L130 PetriNetUnfolder]: 54/846 cut-off events. [2022-11-02 20:15:49,423 INFO L131 PetriNetUnfolder]: For 71/87 co-relation queries the response was YES. [2022-11-02 20:15:49,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 846 events. 54/846 cut-off events. For 71/87 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3649 event pairs, 0 based on Foata normal form. 4/801 useless extension candidates. Maximal degree in co-relation 1174. Up to 83 conditions per place. [2022-11-02 20:15:49,439 INFO L137 encePairwiseOnDemand]: 588/596 looper letters, 38 selfloop transitions, 4 changer transitions 4/607 dead transitions. [2022-11-02 20:15:49,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 607 transitions, 1595 flow [2022-11-02 20:15:49,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:15:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3764 transitions. [2022-11-02 20:15:49,447 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9022051773729626 [2022-11-02 20:15:49,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3764 transitions. [2022-11-02 20:15:49,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3764 transitions. [2022-11-02 20:15:49,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:49,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3764 transitions. [2022-11-02 20:15:49,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 537.7142857142857) internal successors, (3764), 7 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:49,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:49,470 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:49,470 INFO L175 Difference]: Start difference. First operand has 567 places, 595 transitions, 1479 flow. Second operand 7 states and 3764 transitions. [2022-11-02 20:15:49,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 607 transitions, 1595 flow [2022-11-02 20:15:49,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 607 transitions, 1594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:15:49,484 INFO L231 Difference]: Finished difference. Result has 577 places, 598 transitions, 1512 flow [2022-11-02 20:15:49,485 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1512, PETRI_PLACES=577, PETRI_TRANSITIONS=598} [2022-11-02 20:15:49,486 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 50 predicate places. [2022-11-02 20:15:49,487 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 598 transitions, 1512 flow [2022-11-02 20:15:49,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:49,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:49,489 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:49,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:15:49,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:49,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1832658770, now seen corresponding path program 1 times [2022-11-02 20:15:49,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:49,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451957838] [2022-11-02 20:15:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:49,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:49,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:49,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451957838] [2022-11-02 20:15:49,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451957838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:49,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:49,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:15:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852125062] [2022-11-02 20:15:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:15:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:15:49,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:15:49,905 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 596 [2022-11-02 20:15:49,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 598 transitions, 1512 flow. Second operand has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:49,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:49,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 596 [2022-11-02 20:15:49,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:50,326 INFO L130 PetriNetUnfolder]: 56/894 cut-off events. [2022-11-02 20:15:50,327 INFO L131 PetriNetUnfolder]: For 127/143 co-relation queries the response was YES. [2022-11-02 20:15:50,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 894 events. 56/894 cut-off events. For 127/143 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4013 event pairs, 0 based on Foata normal form. 4/849 useless extension candidates. Maximal degree in co-relation 1359. Up to 125 conditions per place. [2022-11-02 20:15:50,344 INFO L137 encePairwiseOnDemand]: 589/596 looper letters, 42 selfloop transitions, 2 changer transitions 5/611 dead transitions. [2022-11-02 20:15:50,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 611 transitions, 1650 flow [2022-11-02 20:15:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:50,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:15:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3765 transitions. [2022-11-02 20:15:50,353 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9024448705656759 [2022-11-02 20:15:50,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3765 transitions. [2022-11-02 20:15:50,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3765 transitions. [2022-11-02 20:15:50,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:50,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3765 transitions. [2022-11-02 20:15:50,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 537.8571428571429) internal successors, (3765), 7 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:50,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:50,373 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:50,374 INFO L175 Difference]: Start difference. First operand has 577 places, 598 transitions, 1512 flow. Second operand 7 states and 3765 transitions. [2022-11-02 20:15:50,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 611 transitions, 1650 flow [2022-11-02 20:15:50,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 611 transitions, 1632 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-02 20:15:50,392 INFO L231 Difference]: Finished difference. Result has 581 places, 599 transitions, 1526 flow [2022-11-02 20:15:50,394 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1526, PETRI_PLACES=581, PETRI_TRANSITIONS=599} [2022-11-02 20:15:50,396 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 54 predicate places. [2022-11-02 20:15:50,396 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 599 transitions, 1526 flow [2022-11-02 20:15:50,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:50,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:50,398 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:50,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:15:50,399 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:50,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1515986788, now seen corresponding path program 1 times [2022-11-02 20:15:50,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:50,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947133144] [2022-11-02 20:15:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:50,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:50,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:50,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947133144] [2022-11-02 20:15:50,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947133144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:50,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:50,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:15:50,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786450844] [2022-11-02 20:15:50,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:50,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:15:50,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:50,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:15:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:50,564 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 548 out of 596 [2022-11-02 20:15:50,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 599 transitions, 1526 flow. Second operand has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:50,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:50,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 548 of 596 [2022-11-02 20:15:50,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:50,963 INFO L130 PetriNetUnfolder]: 98/998 cut-off events. [2022-11-02 20:15:50,963 INFO L131 PetriNetUnfolder]: For 146/157 co-relation queries the response was YES. [2022-11-02 20:15:50,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 998 events. 98/998 cut-off events. For 146/157 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5432 event pairs, 27 based on Foata normal form. 5/930 useless extension candidates. Maximal degree in co-relation 1496. Up to 139 conditions per place. [2022-11-02 20:15:50,983 INFO L137 encePairwiseOnDemand]: 592/596 looper letters, 29 selfloop transitions, 3 changer transitions 2/606 dead transitions. [2022-11-02 20:15:50,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 606 transitions, 1614 flow [2022-11-02 20:15:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:15:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:15:50,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2770 transitions. [2022-11-02 20:15:50,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9295302013422819 [2022-11-02 20:15:50,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2770 transitions. [2022-11-02 20:15:50,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2770 transitions. [2022-11-02 20:15:50,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:50,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2770 transitions. [2022-11-02 20:15:50,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 554.0) internal successors, (2770), 5 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:51,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:51,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:51,006 INFO L175 Difference]: Start difference. First operand has 581 places, 599 transitions, 1526 flow. Second operand 5 states and 2770 transitions. [2022-11-02 20:15:51,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 606 transitions, 1614 flow [2022-11-02 20:15:51,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 606 transitions, 1604 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-02 20:15:51,024 INFO L231 Difference]: Finished difference. Result has 579 places, 599 transitions, 1529 flow [2022-11-02 20:15:51,025 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1529, PETRI_PLACES=579, PETRI_TRANSITIONS=599} [2022-11-02 20:15:51,026 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 52 predicate places. [2022-11-02 20:15:51,026 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 599 transitions, 1529 flow [2022-11-02 20:15:51,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:51,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:51,027 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:51,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:15:51,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:51,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2132408310, now seen corresponding path program 1 times [2022-11-02 20:15:51,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:51,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217544380] [2022-11-02 20:15:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:51,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:51,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:51,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217544380] [2022-11-02 20:15:51,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217544380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:51,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:51,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:15:51,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307952291] [2022-11-02 20:15:51,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:51,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:15:51,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:51,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:15:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:51,215 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 548 out of 596 [2022-11-02 20:15:51,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 599 transitions, 1529 flow. Second operand has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:51,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:51,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 548 of 596 [2022-11-02 20:15:51,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:51,940 INFO L130 PetriNetUnfolder]: 158/2157 cut-off events. [2022-11-02 20:15:51,940 INFO L131 PetriNetUnfolder]: For 131/155 co-relation queries the response was YES. [2022-11-02 20:15:51,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 2157 events. 158/2157 cut-off events. For 131/155 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 14041 event pairs, 12 based on Foata normal form. 8/1962 useless extension candidates. Maximal degree in co-relation 2663. Up to 69 conditions per place. [2022-11-02 20:15:51,973 INFO L137 encePairwiseOnDemand]: 592/596 looper letters, 30 selfloop transitions, 3 changer transitions 2/607 dead transitions. [2022-11-02 20:15:51,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 607 transitions, 1622 flow [2022-11-02 20:15:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:15:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:15:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2771 transitions. [2022-11-02 20:15:51,981 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9298657718120805 [2022-11-02 20:15:51,981 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2771 transitions. [2022-11-02 20:15:51,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2771 transitions. [2022-11-02 20:15:51,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:51,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2771 transitions. [2022-11-02 20:15:51,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 554.2) internal successors, (2771), 5 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:51,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:51,997 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:51,997 INFO L175 Difference]: Start difference. First operand has 579 places, 599 transitions, 1529 flow. Second operand 5 states and 2771 transitions. [2022-11-02 20:15:51,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 607 transitions, 1622 flow [2022-11-02 20:15:52,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 607 transitions, 1613 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-02 20:15:52,017 INFO L231 Difference]: Finished difference. Result has 584 places, 599 transitions, 1537 flow [2022-11-02 20:15:52,018 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1537, PETRI_PLACES=584, PETRI_TRANSITIONS=599} [2022-11-02 20:15:52,019 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 57 predicate places. [2022-11-02 20:15:52,019 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 599 transitions, 1537 flow [2022-11-02 20:15:52,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:52,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:52,021 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:52,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:15:52,021 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:52,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash 814225127, now seen corresponding path program 1 times [2022-11-02 20:15:52,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:52,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510698087] [2022-11-02 20:15:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:52,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:52,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:52,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510698087] [2022-11-02 20:15:52,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510698087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:52,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:52,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:52,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962010079] [2022-11-02 20:15:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:52,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:52,239 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 549 out of 596 [2022-11-02 20:15:52,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 599 transitions, 1537 flow. Second operand has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:52,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:52,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 549 of 596 [2022-11-02 20:15:52,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:53,257 INFO L130 PetriNetUnfolder]: 258/3603 cut-off events. [2022-11-02 20:15:53,257 INFO L131 PetriNetUnfolder]: For 141/162 co-relation queries the response was YES. [2022-11-02 20:15:53,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 3603 events. 258/3603 cut-off events. For 141/162 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 27341 event pairs, 12 based on Foata normal form. 1/3252 useless extension candidates. Maximal degree in co-relation 4294. Up to 56 conditions per place. [2022-11-02 20:15:53,321 INFO L137 encePairwiseOnDemand]: 591/596 looper letters, 25 selfloop transitions, 4 changer transitions 0/607 dead transitions. [2022-11-02 20:15:53,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 607 transitions, 1614 flow [2022-11-02 20:15:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:15:53,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1677 transitions. [2022-11-02 20:15:53,326 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9379194630872483 [2022-11-02 20:15:53,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1677 transitions. [2022-11-02 20:15:53,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1677 transitions. [2022-11-02 20:15:53,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:53,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1677 transitions. [2022-11-02 20:15:53,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 559.0) internal successors, (1677), 3 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:53,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:53,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:53,335 INFO L175 Difference]: Start difference. First operand has 584 places, 599 transitions, 1537 flow. Second operand 3 states and 1677 transitions. [2022-11-02 20:15:53,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 607 transitions, 1614 flow [2022-11-02 20:15:53,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 607 transitions, 1605 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-02 20:15:53,353 INFO L231 Difference]: Finished difference. Result has 585 places, 600 transitions, 1546 flow [2022-11-02 20:15:53,354 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1546, PETRI_PLACES=585, PETRI_TRANSITIONS=600} [2022-11-02 20:15:53,355 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 58 predicate places. [2022-11-02 20:15:53,355 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 600 transitions, 1546 flow [2022-11-02 20:15:53,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:53,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:53,356 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:53,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:15:53,357 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:53,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1543483578, now seen corresponding path program 1 times [2022-11-02 20:15:53,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:53,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039667102] [2022-11-02 20:15:53,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:53,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:53,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:53,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039667102] [2022-11-02 20:15:53,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039667102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:53,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:53,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583856651] [2022-11-02 20:15:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:53,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:53,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:53,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:53,576 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 549 out of 596 [2022-11-02 20:15:53,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 600 transitions, 1546 flow. Second operand has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:53,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:53,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 549 of 596 [2022-11-02 20:15:53,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:54,309 INFO L130 PetriNetUnfolder]: 220/2161 cut-off events. [2022-11-02 20:15:54,309 INFO L131 PetriNetUnfolder]: For 180/194 co-relation queries the response was YES. [2022-11-02 20:15:54,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2782 conditions, 2161 events. 220/2161 cut-off events. For 180/194 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 15578 event pairs, 52 based on Foata normal form. 0/1934 useless extension candidates. Maximal degree in co-relation 2749. Up to 147 conditions per place. [2022-11-02 20:15:54,354 INFO L137 encePairwiseOnDemand]: 591/596 looper letters, 24 selfloop transitions, 4 changer transitions 0/607 dead transitions. [2022-11-02 20:15:54,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 607 transitions, 1618 flow [2022-11-02 20:15:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:15:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1676 transitions. [2022-11-02 20:15:54,367 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9373601789709173 [2022-11-02 20:15:54,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1676 transitions. [2022-11-02 20:15:54,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1676 transitions. [2022-11-02 20:15:54,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:54,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1676 transitions. [2022-11-02 20:15:54,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 558.6666666666666) internal successors, (1676), 3 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:54,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:54,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:54,383 INFO L175 Difference]: Start difference. First operand has 585 places, 600 transitions, 1546 flow. Second operand 3 states and 1676 transitions. [2022-11-02 20:15:54,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 607 transitions, 1618 flow [2022-11-02 20:15:54,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 607 transitions, 1614 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:15:54,401 INFO L231 Difference]: Finished difference. Result has 587 places, 601 transitions, 1560 flow [2022-11-02 20:15:54,402 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1560, PETRI_PLACES=587, PETRI_TRANSITIONS=601} [2022-11-02 20:15:54,403 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 60 predicate places. [2022-11-02 20:15:54,404 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 601 transitions, 1560 flow [2022-11-02 20:15:54,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:54,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:54,405 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:54,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:15:54,406 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:54,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1049860450, now seen corresponding path program 1 times [2022-11-02 20:15:54,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:54,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123827194] [2022-11-02 20:15:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:54,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:54,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123827194] [2022-11-02 20:15:54,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123827194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:54,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:54,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681369604] [2022-11-02 20:15:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:54,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:54,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:54,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:54,594 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-11-02 20:15:54,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 601 transitions, 1560 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:54,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:54,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-11-02 20:15:54,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:55,503 INFO L130 PetriNetUnfolder]: 225/3066 cut-off events. [2022-11-02 20:15:55,503 INFO L131 PetriNetUnfolder]: For 236/292 co-relation queries the response was YES. [2022-11-02 20:15:55,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4002 conditions, 3066 events. 225/3066 cut-off events. For 236/292 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 22338 event pairs, 31 based on Foata normal form. 4/2849 useless extension candidates. Maximal degree in co-relation 3968. Up to 95 conditions per place. [2022-11-02 20:15:55,564 INFO L137 encePairwiseOnDemand]: 589/596 looper letters, 26 selfloop transitions, 5 changer transitions 0/612 dead transitions. [2022-11-02 20:15:55,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 612 transitions, 1650 flow [2022-11-02 20:15:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:15:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1683 transitions. [2022-11-02 20:15:55,569 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9412751677852349 [2022-11-02 20:15:55,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1683 transitions. [2022-11-02 20:15:55,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1683 transitions. [2022-11-02 20:15:55,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:55,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1683 transitions. [2022-11-02 20:15:55,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 561.0) internal successors, (1683), 3 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:55,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:55,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:55,578 INFO L175 Difference]: Start difference. First operand has 587 places, 601 transitions, 1560 flow. Second operand 3 states and 1683 transitions. [2022-11-02 20:15:55,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 612 transitions, 1650 flow [2022-11-02 20:15:55,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 612 transitions, 1646 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:15:55,657 INFO L231 Difference]: Finished difference. Result has 590 places, 604 transitions, 1595 flow [2022-11-02 20:15:55,659 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1595, PETRI_PLACES=590, PETRI_TRANSITIONS=604} [2022-11-02 20:15:55,659 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 63 predicate places. [2022-11-02 20:15:55,660 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 604 transitions, 1595 flow [2022-11-02 20:15:55,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:55,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:55,661 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:55,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:15:55,661 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:55,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:55,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1896665874, now seen corresponding path program 2 times [2022-11-02 20:15:55,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:55,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279887093] [2022-11-02 20:15:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279887093] [2022-11-02 20:15:55,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279887093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:55,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:55,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227065637] [2022-11-02 20:15:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:55,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:55,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:55,776 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-11-02 20:15:55,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 604 transitions, 1595 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:55,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:55,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-11-02 20:15:55,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:56,575 INFO L130 PetriNetUnfolder]: 221/2931 cut-off events. [2022-11-02 20:15:56,575 INFO L131 PetriNetUnfolder]: For 313/373 co-relation queries the response was YES. [2022-11-02 20:15:56,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 2931 events. 221/2931 cut-off events. For 313/373 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 20889 event pairs, 40 based on Foata normal form. 3/2717 useless extension candidates. Maximal degree in co-relation 3855. Up to 128 conditions per place. [2022-11-02 20:15:56,625 INFO L137 encePairwiseOnDemand]: 592/596 looper letters, 26 selfloop transitions, 2 changer transitions 3/612 dead transitions. [2022-11-02 20:15:56,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 612 transitions, 1676 flow [2022-11-02 20:15:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:15:56,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1680 transitions. [2022-11-02 20:15:56,630 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9395973154362416 [2022-11-02 20:15:56,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1680 transitions. [2022-11-02 20:15:56,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1680 transitions. [2022-11-02 20:15:56,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:56,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1680 transitions. [2022-11-02 20:15:56,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 560.0) internal successors, (1680), 3 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:56,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:56,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:56,642 INFO L175 Difference]: Start difference. First operand has 590 places, 604 transitions, 1595 flow. Second operand 3 states and 1680 transitions. [2022-11-02 20:15:56,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 612 transitions, 1676 flow [2022-11-02 20:15:56,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 612 transitions, 1666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:15:56,660 INFO L231 Difference]: Finished difference. Result has 591 places, 604 transitions, 1595 flow [2022-11-02 20:15:56,661 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1595, PETRI_PLACES=591, PETRI_TRANSITIONS=604} [2022-11-02 20:15:56,661 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 64 predicate places. [2022-11-02 20:15:56,662 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 604 transitions, 1595 flow [2022-11-02 20:15:56,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:56,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:56,663 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:56,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:15:56,663 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:56,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:56,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1231208426, now seen corresponding path program 1 times [2022-11-02 20:15:56,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:56,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073144103] [2022-11-02 20:15:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:56,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:56,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073144103] [2022-11-02 20:15:56,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073144103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:56,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:56,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079102296] [2022-11-02 20:15:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:56,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:56,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-11-02 20:15:56,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 604 transitions, 1595 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:56,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:56,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-11-02 20:15:56,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:57,650 INFO L130 PetriNetUnfolder]: 236/3053 cut-off events. [2022-11-02 20:15:57,650 INFO L131 PetriNetUnfolder]: For 367/429 co-relation queries the response was YES. [2022-11-02 20:15:57,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3964 conditions, 3053 events. 236/3053 cut-off events. For 367/429 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 21955 event pairs, 39 based on Foata normal form. 5/2822 useless extension candidates. Maximal degree in co-relation 3928. Up to 116 conditions per place. [2022-11-02 20:15:57,690 INFO L137 encePairwiseOnDemand]: 592/596 looper letters, 26 selfloop transitions, 3 changer transitions 3/613 dead transitions. [2022-11-02 20:15:57,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 613 transitions, 1684 flow [2022-11-02 20:15:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:15:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1681 transitions. [2022-11-02 20:15:57,695 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9401565995525727 [2022-11-02 20:15:57,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1681 transitions. [2022-11-02 20:15:57,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1681 transitions. [2022-11-02 20:15:57,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:57,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1681 transitions. [2022-11-02 20:15:57,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 560.3333333333334) internal successors, (1681), 3 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:57,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:57,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:57,703 INFO L175 Difference]: Start difference. First operand has 591 places, 604 transitions, 1595 flow. Second operand 3 states and 1681 transitions. [2022-11-02 20:15:57,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 613 transitions, 1684 flow [2022-11-02 20:15:57,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 613 transitions, 1682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:15:57,720 INFO L231 Difference]: Finished difference. Result has 593 places, 604 transitions, 1606 flow [2022-11-02 20:15:57,721 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1606, PETRI_PLACES=593, PETRI_TRANSITIONS=604} [2022-11-02 20:15:57,721 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 66 predicate places. [2022-11-02 20:15:57,722 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 604 transitions, 1606 flow [2022-11-02 20:15:57,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:57,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:57,723 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:57,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:15:57,723 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2000956274, now seen corresponding path program 2 times [2022-11-02 20:15:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:57,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162285381] [2022-11-02 20:15:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:57,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:57,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:57,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162285381] [2022-11-02 20:15:57,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162285381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:57,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:57,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:57,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080664278] [2022-11-02 20:15:57,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:57,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:57,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:57,834 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-11-02 20:15:57,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 604 transitions, 1606 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:57,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:57,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-11-02 20:15:57,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:15:58,536 INFO L130 PetriNetUnfolder]: 215/2844 cut-off events. [2022-11-02 20:15:58,536 INFO L131 PetriNetUnfolder]: For 431/498 co-relation queries the response was YES. [2022-11-02 20:15:58,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 2844 events. 215/2844 cut-off events. For 431/498 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 19807 event pairs, 26 based on Foata normal form. 4/2642 useless extension candidates. Maximal degree in co-relation 3753. Up to 74 conditions per place. [2022-11-02 20:15:58,564 INFO L137 encePairwiseOnDemand]: 589/596 looper letters, 27 selfloop transitions, 5 changer transitions 3/616 dead transitions. [2022-11-02 20:15:58,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 616 transitions, 1720 flow [2022-11-02 20:15:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:58,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:15:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1683 transitions. [2022-11-02 20:15:58,567 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9412751677852349 [2022-11-02 20:15:58,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1683 transitions. [2022-11-02 20:15:58,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1683 transitions. [2022-11-02 20:15:58,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:15:58,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1683 transitions. [2022-11-02 20:15:58,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 561.0) internal successors, (1683), 3 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:58,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:58,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:58,575 INFO L175 Difference]: Start difference. First operand has 593 places, 604 transitions, 1606 flow. Second operand 3 states and 1683 transitions. [2022-11-02 20:15:58,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 616 transitions, 1720 flow [2022-11-02 20:15:58,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 616 transitions, 1717 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:15:58,592 INFO L231 Difference]: Finished difference. Result has 596 places, 605 transitions, 1628 flow [2022-11-02 20:15:58,593 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1628, PETRI_PLACES=596, PETRI_TRANSITIONS=605} [2022-11-02 20:15:58,593 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 69 predicate places. [2022-11-02 20:15:58,593 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 605 transitions, 1628 flow [2022-11-02 20:15:58,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:58,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:15:58,594 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:58,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:15:58,595 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:15:58,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:58,595 INFO L85 PathProgramCache]: Analyzing trace with hash -934519983, now seen corresponding path program 1 times [2022-11-02 20:15:58,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:58,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874523401] [2022-11-02 20:15:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:58,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:15:59,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:59,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874523401] [2022-11-02 20:15:59,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874523401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:59,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:59,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:15:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816222089] [2022-11-02 20:15:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:15:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:15:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:59,084 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-11-02 20:15:59,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 605 transitions, 1628 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:59,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:59,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-11-02 20:15:59,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:00,148 INFO L130 PetriNetUnfolder]: 572/4057 cut-off events. [2022-11-02 20:16:00,148 INFO L131 PetriNetUnfolder]: For 2438/2767 co-relation queries the response was YES. [2022-11-02 20:16:00,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6206 conditions, 4057 events. 572/4057 cut-off events. For 2438/2767 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 32281 event pairs, 90 based on Foata normal form. 94/3848 useless extension candidates. Maximal degree in co-relation 6168. Up to 565 conditions per place. [2022-11-02 20:16:00,192 INFO L137 encePairwiseOnDemand]: 588/596 looper letters, 79 selfloop transitions, 6 changer transitions 7/635 dead transitions. [2022-11-02 20:16:00,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 635 transitions, 1978 flow [2022-11-02 20:16:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3160 transitions. [2022-11-02 20:16:00,199 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.883668903803132 [2022-11-02 20:16:00,199 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3160 transitions. [2022-11-02 20:16:00,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3160 transitions. [2022-11-02 20:16:00,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:00,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3160 transitions. [2022-11-02 20:16:00,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 526.6666666666666) internal successors, (3160), 6 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:00,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:00,209 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:00,209 INFO L175 Difference]: Start difference. First operand has 596 places, 605 transitions, 1628 flow. Second operand 6 states and 3160 transitions. [2022-11-02 20:16:00,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 635 transitions, 1978 flow [2022-11-02 20:16:00,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 635 transitions, 1938 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-11-02 20:16:00,228 INFO L231 Difference]: Finished difference. Result has 600 places, 605 transitions, 1627 flow [2022-11-02 20:16:00,228 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1627, PETRI_PLACES=600, PETRI_TRANSITIONS=605} [2022-11-02 20:16:00,229 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 73 predicate places. [2022-11-02 20:16:00,229 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 605 transitions, 1627 flow [2022-11-02 20:16:00,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:00,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:00,230 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:16:00,230 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:00,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1631379586, now seen corresponding path program 1 times [2022-11-02 20:16:00,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:00,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849034012] [2022-11-02 20:16:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:00,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:00,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849034012] [2022-11-02 20:16:00,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849034012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:00,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:00,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:00,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819359872] [2022-11-02 20:16:00,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:00,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:00,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:00,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:00,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:00,510 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-11-02 20:16:00,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 605 transitions, 1627 flow. Second operand has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:00,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:00,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-11-02 20:16:00,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:02,359 INFO L130 PetriNetUnfolder]: 1099/7051 cut-off events. [2022-11-02 20:16:02,359 INFO L131 PetriNetUnfolder]: For 1808/1811 co-relation queries the response was YES. [2022-11-02 20:16:02,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10368 conditions, 7051 events. 1099/7051 cut-off events. For 1808/1811 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 69578 event pairs, 416 based on Foata normal form. 1/6328 useless extension candidates. Maximal degree in co-relation 10329. Up to 1009 conditions per place. [2022-11-02 20:16:02,411 INFO L137 encePairwiseOnDemand]: 574/596 looper letters, 71 selfloop transitions, 21 changer transitions 29/666 dead transitions. [2022-11-02 20:16:02,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 666 transitions, 2070 flow [2022-11-02 20:16:02,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:16:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:16:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3713 transitions. [2022-11-02 20:16:02,416 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8899808245445829 [2022-11-02 20:16:02,416 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3713 transitions. [2022-11-02 20:16:02,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3713 transitions. [2022-11-02 20:16:02,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:02,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3713 transitions. [2022-11-02 20:16:02,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 530.4285714285714) internal successors, (3713), 7 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:02,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:02,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:02,458 INFO L175 Difference]: Start difference. First operand has 600 places, 605 transitions, 1627 flow. Second operand 7 states and 3713 transitions. [2022-11-02 20:16:02,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 666 transitions, 2070 flow [2022-11-02 20:16:02,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 666 transitions, 2056 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:16:02,483 INFO L231 Difference]: Finished difference. Result has 609 places, 615 transitions, 1762 flow [2022-11-02 20:16:02,484 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1762, PETRI_PLACES=609, PETRI_TRANSITIONS=615} [2022-11-02 20:16:02,484 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 82 predicate places. [2022-11-02 20:16:02,485 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 615 transitions, 1762 flow [2022-11-02 20:16:02,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:02,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:02,485 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:02,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:16:02,486 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:02,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:02,486 INFO L85 PathProgramCache]: Analyzing trace with hash -223716815, now seen corresponding path program 2 times [2022-11-02 20:16:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:02,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732278731] [2022-11-02 20:16:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:02,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:02,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732278731] [2022-11-02 20:16:02,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732278731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:02,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:02,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:02,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146340632] [2022-11-02 20:16:02,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:02,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:02,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:02,875 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-11-02 20:16:02,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 615 transitions, 1762 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:02,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:02,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-11-02 20:16:02,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:04,488 INFO L130 PetriNetUnfolder]: 629/5058 cut-off events. [2022-11-02 20:16:04,488 INFO L131 PetriNetUnfolder]: For 4399/5240 co-relation queries the response was YES. [2022-11-02 20:16:04,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8041 conditions, 5058 events. 629/5058 cut-off events. For 4399/5240 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 44161 event pairs, 262 based on Foata normal form. 50/4802 useless extension candidates. Maximal degree in co-relation 7997. Up to 718 conditions per place. [2022-11-02 20:16:04,529 INFO L137 encePairwiseOnDemand]: 581/596 looper letters, 67 selfloop transitions, 15 changer transitions 16/647 dead transitions. [2022-11-02 20:16:04,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 647 transitions, 2145 flow [2022-11-02 20:16:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:16:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:16:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3673 transitions. [2022-11-02 20:16:04,535 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8803930968360498 [2022-11-02 20:16:04,535 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3673 transitions. [2022-11-02 20:16:04,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3673 transitions. [2022-11-02 20:16:04,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:04,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3673 transitions. [2022-11-02 20:16:04,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 524.7142857142857) internal successors, (3673), 7 states have internal predecessors, (3673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:04,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:04,546 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:04,546 INFO L175 Difference]: Start difference. First operand has 609 places, 615 transitions, 1762 flow. Second operand 7 states and 3673 transitions. [2022-11-02 20:16:04,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 647 transitions, 2145 flow [2022-11-02 20:16:04,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 647 transitions, 2143 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-02 20:16:04,571 INFO L231 Difference]: Finished difference. Result has 617 places, 621 transitions, 1851 flow [2022-11-02 20:16:04,572 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1851, PETRI_PLACES=617, PETRI_TRANSITIONS=621} [2022-11-02 20:16:04,572 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 90 predicate places. [2022-11-02 20:16:04,572 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 621 transitions, 1851 flow [2022-11-02 20:16:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:04,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:04,574 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:04,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:16:04,574 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1031197703, now seen corresponding path program 3 times [2022-11-02 20:16:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:04,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362636048] [2022-11-02 20:16:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:04,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:04,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362636048] [2022-11-02 20:16:04,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362636048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:04,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:04,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986771968] [2022-11-02 20:16:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:04,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:04,868 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-11-02 20:16:04,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 621 transitions, 1851 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:04,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:04,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-11-02 20:16:04,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:06,458 INFO L130 PetriNetUnfolder]: 621/5172 cut-off events. [2022-11-02 20:16:06,458 INFO L131 PetriNetUnfolder]: For 4728/5572 co-relation queries the response was YES. [2022-11-02 20:16:06,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8397 conditions, 5172 events. 621/5172 cut-off events. For 4728/5572 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 45783 event pairs, 267 based on Foata normal form. 22/4972 useless extension candidates. Maximal degree in co-relation 8349. Up to 597 conditions per place. [2022-11-02 20:16:06,545 INFO L137 encePairwiseOnDemand]: 581/596 looper letters, 79 selfloop transitions, 14 changer transitions 26/668 dead transitions. [2022-11-02 20:16:06,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 668 transitions, 2277 flow [2022-11-02 20:16:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:16:06,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:16:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3688 transitions. [2022-11-02 20:16:06,552 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8839884947267498 [2022-11-02 20:16:06,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3688 transitions. [2022-11-02 20:16:06,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3688 transitions. [2022-11-02 20:16:06,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:06,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3688 transitions. [2022-11-02 20:16:06,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 526.8571428571429) internal successors, (3688), 7 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:06,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:06,568 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:06,569 INFO L175 Difference]: Start difference. First operand has 617 places, 621 transitions, 1851 flow. Second operand 7 states and 3688 transitions. [2022-11-02 20:16:06,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 668 transitions, 2277 flow [2022-11-02 20:16:06,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 668 transitions, 2273 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 20:16:06,604 INFO L231 Difference]: Finished difference. Result has 624 places, 619 transitions, 1855 flow [2022-11-02 20:16:06,606 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1855, PETRI_PLACES=624, PETRI_TRANSITIONS=619} [2022-11-02 20:16:06,607 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 97 predicate places. [2022-11-02 20:16:06,607 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 619 transitions, 1855 flow [2022-11-02 20:16:06,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:06,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:06,608 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:06,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:16:06,608 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:06,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:06,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1902200368, now seen corresponding path program 2 times [2022-11-02 20:16:06,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:06,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407299392] [2022-11-02 20:16:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:06,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:06,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:06,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407299392] [2022-11-02 20:16:06,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407299392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:06,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:06,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:06,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767720251] [2022-11-02 20:16:06,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:06,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:06,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:06,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:06,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:06,980 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-11-02 20:16:06,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 619 transitions, 1855 flow. Second operand has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:06,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:06,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-11-02 20:16:06,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:08,876 INFO L130 PetriNetUnfolder]: 998/6307 cut-off events. [2022-11-02 20:16:08,876 INFO L131 PetriNetUnfolder]: For 4735/4748 co-relation queries the response was YES. [2022-11-02 20:16:08,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10069 conditions, 6307 events. 998/6307 cut-off events. For 4735/4748 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 61019 event pairs, 353 based on Foata normal form. 42/5881 useless extension candidates. Maximal degree in co-relation 10018. Up to 1065 conditions per place. [2022-11-02 20:16:08,928 INFO L137 encePairwiseOnDemand]: 585/596 looper letters, 82 selfloop transitions, 12 changer transitions 14/657 dead transitions. [2022-11-02 20:16:08,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 657 transitions, 2288 flow [2022-11-02 20:16:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3179 transitions. [2022-11-02 20:16:08,931 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8889821029082774 [2022-11-02 20:16:08,931 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3179 transitions. [2022-11-02 20:16:08,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3179 transitions. [2022-11-02 20:16:08,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:08,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3179 transitions. [2022-11-02 20:16:08,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 529.8333333333334) internal successors, (3179), 6 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:08,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:08,940 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:08,940 INFO L175 Difference]: Start difference. First operand has 624 places, 619 transitions, 1855 flow. Second operand 6 states and 3179 transitions. [2022-11-02 20:16:08,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 657 transitions, 2288 flow [2022-11-02 20:16:08,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 657 transitions, 2227 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-11-02 20:16:08,974 INFO L231 Difference]: Finished difference. Result has 623 places, 625 transitions, 1927 flow [2022-11-02 20:16:08,975 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1927, PETRI_PLACES=623, PETRI_TRANSITIONS=625} [2022-11-02 20:16:08,975 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 96 predicate places. [2022-11-02 20:16:08,976 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 625 transitions, 1927 flow [2022-11-02 20:16:08,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:08,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:08,977 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:08,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:16:08,977 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:08,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1125290522, now seen corresponding path program 3 times [2022-11-02 20:16:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:08,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914011610] [2022-11-02 20:16:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:09,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:09,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914011610] [2022-11-02 20:16:09,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914011610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:09,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:09,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716583488] [2022-11-02 20:16:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:09,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:09,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:09,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:09,278 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-11-02 20:16:09,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 625 transitions, 1927 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:09,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:09,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-11-02 20:16:09,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:11,391 INFO L130 PetriNetUnfolder]: 1011/6718 cut-off events. [2022-11-02 20:16:11,391 INFO L131 PetriNetUnfolder]: For 2760/2792 co-relation queries the response was YES. [2022-11-02 20:16:11,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10785 conditions, 6718 events. 1011/6718 cut-off events. For 2760/2792 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 65696 event pairs, 405 based on Foata normal form. 20/6250 useless extension candidates. Maximal degree in co-relation 10737. Up to 781 conditions per place. [2022-11-02 20:16:11,456 INFO L137 encePairwiseOnDemand]: 581/596 looper letters, 81 selfloop transitions, 15 changer transitions 33/676 dead transitions. [2022-11-02 20:16:11,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 676 transitions, 2409 flow [2022-11-02 20:16:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:16:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:16:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3690 transitions. [2022-11-02 20:16:11,459 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8844678811121764 [2022-11-02 20:16:11,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3690 transitions. [2022-11-02 20:16:11,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3690 transitions. [2022-11-02 20:16:11,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:11,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3690 transitions. [2022-11-02 20:16:11,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 527.1428571428571) internal successors, (3690), 7 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,471 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,471 INFO L175 Difference]: Start difference. First operand has 623 places, 625 transitions, 1927 flow. Second operand 7 states and 3690 transitions. [2022-11-02 20:16:11,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 676 transitions, 2409 flow [2022-11-02 20:16:11,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 676 transitions, 2397 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-02 20:16:11,508 INFO L231 Difference]: Finished difference. Result has 632 places, 620 transitions, 1917 flow [2022-11-02 20:16:11,509 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1917, PETRI_PLACES=632, PETRI_TRANSITIONS=620} [2022-11-02 20:16:11,510 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 105 predicate places. [2022-11-02 20:16:11,510 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 620 transitions, 1917 flow [2022-11-02 20:16:11,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:11,511 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:11,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:16:11,511 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:11,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:11,512 INFO L85 PathProgramCache]: Analyzing trace with hash 282791459, now seen corresponding path program 4 times [2022-11-02 20:16:11,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:11,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346807105] [2022-11-02 20:16:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:11,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:11,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:11,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346807105] [2022-11-02 20:16:11,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346807105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:11,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:11,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:11,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607050545] [2022-11-02 20:16:11,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:11,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:11,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:11,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:11,795 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-11-02 20:16:11,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 620 transitions, 1917 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:11,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-11-02 20:16:11,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:13,269 INFO L130 PetriNetUnfolder]: 628/5124 cut-off events. [2022-11-02 20:16:13,269 INFO L131 PetriNetUnfolder]: For 3072/3280 co-relation queries the response was YES. [2022-11-02 20:16:13,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 5124 events. 628/5124 cut-off events. For 3072/3280 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 44725 event pairs, 198 based on Foata normal form. 16/4885 useless extension candidates. Maximal degree in co-relation 8288. Up to 563 conditions per place. [2022-11-02 20:16:13,312 INFO L137 encePairwiseOnDemand]: 579/596 looper letters, 70 selfloop transitions, 14 changer transitions 22/649 dead transitions. [2022-11-02 20:16:13,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 649 transitions, 2322 flow [2022-11-02 20:16:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:16:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:16:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3674 transitions. [2022-11-02 20:16:13,316 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8806327900287632 [2022-11-02 20:16:13,316 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3674 transitions. [2022-11-02 20:16:13,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3674 transitions. [2022-11-02 20:16:13,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:13,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3674 transitions. [2022-11-02 20:16:13,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 524.8571428571429) internal successors, (3674), 7 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:13,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:13,328 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:13,328 INFO L175 Difference]: Start difference. First operand has 632 places, 620 transitions, 1917 flow. Second operand 7 states and 3674 transitions. [2022-11-02 20:16:13,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 649 transitions, 2322 flow [2022-11-02 20:16:13,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 649 transitions, 2230 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-11-02 20:16:13,367 INFO L231 Difference]: Finished difference. Result has 629 places, 610 transitions, 1815 flow [2022-11-02 20:16:13,368 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1815, PETRI_PLACES=629, PETRI_TRANSITIONS=610} [2022-11-02 20:16:13,369 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 102 predicate places. [2022-11-02 20:16:13,369 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 610 transitions, 1815 flow [2022-11-02 20:16:13,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:13,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:13,370 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:13,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:16:13,370 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:13,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:13,371 INFO L85 PathProgramCache]: Analyzing trace with hash 271336606, now seen corresponding path program 4 times [2022-11-02 20:16:13,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:13,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723791513] [2022-11-02 20:16:13,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:13,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:13,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:13,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723791513] [2022-11-02 20:16:13,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723791513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:13,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:13,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:13,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681393304] [2022-11-02 20:16:13,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:13,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:13,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:13,669 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-11-02 20:16:13,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 610 transitions, 1815 flow. Second operand has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:13,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:13,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-11-02 20:16:13,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:15,489 INFO L130 PetriNetUnfolder]: 884/5666 cut-off events. [2022-11-02 20:16:15,489 INFO L131 PetriNetUnfolder]: For 2350/2368 co-relation queries the response was YES. [2022-11-02 20:16:15,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9246 conditions, 5666 events. 884/5666 cut-off events. For 2350/2368 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 51766 event pairs, 208 based on Foata normal form. 14/5216 useless extension candidates. Maximal degree in co-relation 9199. Up to 792 conditions per place. [2022-11-02 20:16:15,693 INFO L137 encePairwiseOnDemand]: 568/596 looper letters, 74 selfloop transitions, 33 changer transitions 15/660 dead transitions. [2022-11-02 20:16:15,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 660 transitions, 2247 flow [2022-11-02 20:16:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:16:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:16:15,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3709 transitions. [2022-11-02 20:16:15,696 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8890220517737296 [2022-11-02 20:16:15,696 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3709 transitions. [2022-11-02 20:16:15,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3709 transitions. [2022-11-02 20:16:15,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:15,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3709 transitions. [2022-11-02 20:16:15,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 529.8571428571429) internal successors, (3709), 7 states have internal predecessors, (3709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:15,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:15,707 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:15,707 INFO L175 Difference]: Start difference. First operand has 629 places, 610 transitions, 1815 flow. Second operand 7 states and 3709 transitions. [2022-11-02 20:16:15,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 660 transitions, 2247 flow [2022-11-02 20:16:15,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 660 transitions, 2188 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-11-02 20:16:15,733 INFO L231 Difference]: Finished difference. Result has 613 places, 619 transitions, 1901 flow [2022-11-02 20:16:15,735 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1901, PETRI_PLACES=613, PETRI_TRANSITIONS=619} [2022-11-02 20:16:15,735 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 86 predicate places. [2022-11-02 20:16:15,735 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 619 transitions, 1901 flow [2022-11-02 20:16:15,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:15,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:15,736 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:15,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:16:15,737 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:15,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:15,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1934647522, now seen corresponding path program 1 times [2022-11-02 20:16:15,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:15,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253255593] [2022-11-02 20:16:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:15,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:16,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:16,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253255593] [2022-11-02 20:16:16,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253255593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:16,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:16,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250352539] [2022-11-02 20:16:16,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:16,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:16,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:16,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:16,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:16,015 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-11-02 20:16:16,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 619 transitions, 1901 flow. Second operand has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:16,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:16,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-11-02 20:16:16,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:17,163 INFO L130 PetriNetUnfolder]: 768/4574 cut-off events. [2022-11-02 20:16:17,164 INFO L131 PetriNetUnfolder]: For 2482/2482 co-relation queries the response was YES. [2022-11-02 20:16:17,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7402 conditions, 4574 events. 768/4574 cut-off events. For 2482/2482 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 40012 event pairs, 87 based on Foata normal form. 33/4179 useless extension candidates. Maximal degree in co-relation 7363. Up to 723 conditions per place. [2022-11-02 20:16:17,196 INFO L137 encePairwiseOnDemand]: 587/596 looper letters, 72 selfloop transitions, 11 changer transitions 6/627 dead transitions. [2022-11-02 20:16:17,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 627 transitions, 2047 flow [2022-11-02 20:16:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3160 transitions. [2022-11-02 20:16:17,200 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.883668903803132 [2022-11-02 20:16:17,200 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3160 transitions. [2022-11-02 20:16:17,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3160 transitions. [2022-11-02 20:16:17,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:17,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3160 transitions. [2022-11-02 20:16:17,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 526.6666666666666) internal successors, (3160), 6 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:17,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:17,206 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:17,206 INFO L175 Difference]: Start difference. First operand has 613 places, 619 transitions, 1901 flow. Second operand 6 states and 3160 transitions. [2022-11-02 20:16:17,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 627 transitions, 2047 flow [2022-11-02 20:16:17,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 627 transitions, 1964 flow, removed 21 selfloop flow, removed 11 redundant places. [2022-11-02 20:16:17,226 INFO L231 Difference]: Finished difference. Result has 601 places, 604 transitions, 1725 flow [2022-11-02 20:16:17,227 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1725, PETRI_PLACES=601, PETRI_TRANSITIONS=604} [2022-11-02 20:16:17,227 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 74 predicate places. [2022-11-02 20:16:17,227 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 604 transitions, 1725 flow [2022-11-02 20:16:17,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:17,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:17,228 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:17,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:16:17,229 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash -911261542, now seen corresponding path program 2 times [2022-11-02 20:16:17,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:17,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128971772] [2022-11-02 20:16:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:17,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:17,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:17,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128971772] [2022-11-02 20:16:17,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128971772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:17,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:17,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152348424] [2022-11-02 20:16:17,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:17,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:17,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:17,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:17,478 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-11-02 20:16:17,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 604 transitions, 1725 flow. Second operand has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:17,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:17,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-11-02 20:16:17,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:18,620 INFO L130 PetriNetUnfolder]: 803/5085 cut-off events. [2022-11-02 20:16:18,620 INFO L131 PetriNetUnfolder]: For 1238/1238 co-relation queries the response was YES. [2022-11-02 20:16:18,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7655 conditions, 5085 events. 803/5085 cut-off events. For 1238/1238 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 45256 event pairs, 207 based on Foata normal form. 2/4630 useless extension candidates. Maximal degree in co-relation 7622. Up to 780 conditions per place. [2022-11-02 20:16:18,667 INFO L137 encePairwiseOnDemand]: 578/596 looper letters, 64 selfloop transitions, 18 changer transitions 11/631 dead transitions. [2022-11-02 20:16:18,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 631 transitions, 2009 flow [2022-11-02 20:16:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:16:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:16:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3682 transitions. [2022-11-02 20:16:18,673 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8825503355704698 [2022-11-02 20:16:18,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3682 transitions. [2022-11-02 20:16:18,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3682 transitions. [2022-11-02 20:16:18,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:18,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3682 transitions. [2022-11-02 20:16:18,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 526.0) internal successors, (3682), 7 states have internal predecessors, (3682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:18,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:18,685 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:18,685 INFO L175 Difference]: Start difference. First operand has 601 places, 604 transitions, 1725 flow. Second operand 7 states and 3682 transitions. [2022-11-02 20:16:18,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 631 transitions, 2009 flow [2022-11-02 20:16:18,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 631 transitions, 1990 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:16:18,706 INFO L231 Difference]: Finished difference. Result has 604 places, 603 transitions, 1734 flow [2022-11-02 20:16:18,707 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1734, PETRI_PLACES=604, PETRI_TRANSITIONS=603} [2022-11-02 20:16:18,707 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 77 predicate places. [2022-11-02 20:16:18,708 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 603 transitions, 1734 flow [2022-11-02 20:16:18,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:18,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:18,709 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:18,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:16:18,709 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:18,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:18,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1186277638, now seen corresponding path program 1 times [2022-11-02 20:16:18,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:18,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876093373] [2022-11-02 20:16:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:18,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:18,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:18,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876093373] [2022-11-02 20:16:18,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876093373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:18,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:18,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:18,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227629573] [2022-11-02 20:16:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:18,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:18,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:18,949 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-11-02 20:16:18,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 603 transitions, 1734 flow. Second operand has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:18,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:18,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-11-02 20:16:18,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:19,997 INFO L130 PetriNetUnfolder]: 728/4521 cut-off events. [2022-11-02 20:16:19,997 INFO L131 PetriNetUnfolder]: For 1451/1451 co-relation queries the response was YES. [2022-11-02 20:16:20,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7025 conditions, 4521 events. 728/4521 cut-off events. For 1451/1451 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 38572 event pairs, 308 based on Foata normal form. 2/4105 useless extension candidates. Maximal degree in co-relation 6991. Up to 717 conditions per place. [2022-11-02 20:16:20,039 INFO L137 encePairwiseOnDemand]: 580/596 looper letters, 54 selfloop transitions, 13 changer transitions 21/621 dead transitions. [2022-11-02 20:16:20,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 621 transitions, 1962 flow [2022-11-02 20:16:20,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:16:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:16:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3673 transitions. [2022-11-02 20:16:20,044 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8803930968360498 [2022-11-02 20:16:20,045 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3673 transitions. [2022-11-02 20:16:20,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3673 transitions. [2022-11-02 20:16:20,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:20,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3673 transitions. [2022-11-02 20:16:20,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 524.7142857142857) internal successors, (3673), 7 states have internal predecessors, (3673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:20,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:20,056 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:20,056 INFO L175 Difference]: Start difference. First operand has 604 places, 603 transitions, 1734 flow. Second operand 7 states and 3673 transitions. [2022-11-02 20:16:20,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 621 transitions, 1962 flow [2022-11-02 20:16:20,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 621 transitions, 1934 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-02 20:16:20,077 INFO L231 Difference]: Finished difference. Result has 604 places, 593 transitions, 1664 flow [2022-11-02 20:16:20,078 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1664, PETRI_PLACES=604, PETRI_TRANSITIONS=593} [2022-11-02 20:16:20,079 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 77 predicate places. [2022-11-02 20:16:20,080 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 593 transitions, 1664 flow [2022-11-02 20:16:20,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:20,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:20,081 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:20,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:16:20,082 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:20,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1455733224, now seen corresponding path program 1 times [2022-11-02 20:16:20,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:20,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750611556] [2022-11-02 20:16:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:20,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:20,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:20,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750611556] [2022-11-02 20:16:20,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750611556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:20,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:20,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:16:20,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629708991] [2022-11-02 20:16:20,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:20,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:16:20,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:20,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:16:20,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:16:20,727 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-11-02 20:16:20,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 593 transitions, 1664 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:20,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:20,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-11-02 20:16:20,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:28,990 INFO L130 PetriNetUnfolder]: 3207/14945 cut-off events. [2022-11-02 20:16:28,991 INFO L131 PetriNetUnfolder]: For 1281/1282 co-relation queries the response was YES. [2022-11-02 20:16:29,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22594 conditions, 14945 events. 3207/14945 cut-off events. For 1281/1282 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 159058 event pairs, 1488 based on Foata normal form. 0/13882 useless extension candidates. Maximal degree in co-relation 22563. Up to 3115 conditions per place. [2022-11-02 20:16:29,185 INFO L137 encePairwiseOnDemand]: 570/596 looper letters, 491 selfloop transitions, 91 changer transitions 3/1092 dead transitions. [2022-11-02 20:16:29,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 1092 transitions, 3901 flow [2022-11-02 20:16:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-02 20:16:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-11-02 20:16:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 29387 transitions. [2022-11-02 20:16:29,221 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8217841163310962 [2022-11-02 20:16:29,221 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 29387 transitions. [2022-11-02 20:16:29,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 29387 transitions. [2022-11-02 20:16:29,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:29,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 29387 transitions. [2022-11-02 20:16:29,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 489.78333333333336) internal successors, (29387), 60 states have internal predecessors, (29387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:29,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:29,309 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:29,309 INFO L175 Difference]: Start difference. First operand has 604 places, 593 transitions, 1664 flow. Second operand 60 states and 29387 transitions. [2022-11-02 20:16:29,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 1092 transitions, 3901 flow [2022-11-02 20:16:29,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 1092 transitions, 3801 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-11-02 20:16:29,358 INFO L231 Difference]: Finished difference. Result has 684 places, 672 transitions, 2198 flow [2022-11-02 20:16:29,359 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=2198, PETRI_PLACES=684, PETRI_TRANSITIONS=672} [2022-11-02 20:16:29,360 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 157 predicate places. [2022-11-02 20:16:29,360 INFO L495 AbstractCegarLoop]: Abstraction has has 684 places, 672 transitions, 2198 flow [2022-11-02 20:16:29,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:29,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:29,363 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:29,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:16:29,363 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash -232137040, now seen corresponding path program 2 times [2022-11-02 20:16:29,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:29,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943016418] [2022-11-02 20:16:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:29,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:30,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:30,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943016418] [2022-11-02 20:16:30,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943016418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:30,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:30,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:16:30,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610888098] [2022-11-02 20:16:30,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:30,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:16:30,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:16:30,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:16:30,276 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-11-02 20:16:30,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 672 transitions, 2198 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:30,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:30,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-11-02 20:16:30,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:39,763 INFO L130 PetriNetUnfolder]: 3108/14184 cut-off events. [2022-11-02 20:16:39,763 INFO L131 PetriNetUnfolder]: For 5443/5443 co-relation queries the response was YES. [2022-11-02 20:16:40,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25566 conditions, 14184 events. 3108/14184 cut-off events. For 5443/5443 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 149971 event pairs, 1394 based on Foata normal form. 2/13283 useless extension candidates. Maximal degree in co-relation 25498. Up to 3095 conditions per place. [2022-11-02 20:16:40,094 INFO L137 encePairwiseOnDemand]: 570/596 looper letters, 516 selfloop transitions, 138 changer transitions 3/1164 dead transitions. [2022-11-02 20:16:40,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 1164 transitions, 5227 flow [2022-11-02 20:16:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-02 20:16:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-11-02 20:16:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 29379 transitions. [2022-11-02 20:16:40,160 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8215604026845638 [2022-11-02 20:16:40,160 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 29379 transitions. [2022-11-02 20:16:40,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 29379 transitions. [2022-11-02 20:16:40,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:40,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 29379 transitions. [2022-11-02 20:16:40,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 489.65) internal successors, (29379), 60 states have internal predecessors, (29379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:40,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:40,296 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:40,296 INFO L175 Difference]: Start difference. First operand has 684 places, 672 transitions, 2198 flow. Second operand 60 states and 29379 transitions. [2022-11-02 20:16:40,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 1164 transitions, 5227 flow [2022-11-02 20:16:40,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 1164 transitions, 4843 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-11-02 20:16:40,419 INFO L231 Difference]: Finished difference. Result has 778 places, 752 transitions, 3142 flow [2022-11-02 20:16:40,420 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=3142, PETRI_PLACES=778, PETRI_TRANSITIONS=752} [2022-11-02 20:16:40,421 INFO L287 CegarLoopForPetriNet]: 527 programPoint places, 251 predicate places. [2022-11-02 20:16:40,421 INFO L495 AbstractCegarLoop]: Abstraction has has 778 places, 752 transitions, 3142 flow [2022-11-02 20:16:40,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:40,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:40,424 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:40,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:16:40,425 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:16:40,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:40,426 INFO L85 PathProgramCache]: Analyzing trace with hash -648385006, now seen corresponding path program 3 times [2022-11-02 20:16:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:40,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667897811] [2022-11-02 20:16:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:40,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-02 20:16:41,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:41,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667897811] [2022-11-02 20:16:41,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667897811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:41,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:41,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:16:41,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469732001] [2022-11-02 20:16:41,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:41,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:16:41,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:41,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:16:41,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:16:41,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-11-02 20:16:41,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 778 places, 752 transitions, 3142 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:41,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:41,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-11-02 20:16:41,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand