./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro --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 cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:49:31,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:49:31,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:49:31,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:49:31,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:49:31,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:49:31,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:49:31,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:49:31,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:49:31,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:49:31,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:49:31,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:49:31,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:49:31,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:49:31,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:49:31,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:49:31,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:49:31,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:49:31,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:49:31,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:49:31,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:49:31,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:49:31,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:49:31,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:49:31,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:49:31,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:49:31,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:49:31,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:49:31,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:49:31,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:49:31,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:49:31,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:49:31,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:49:31,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:49:31,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:49:31,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:49:31,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:49:31,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:49:31,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:49:31,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:49:31,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:49:31,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:49:31,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:49:31,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:49:31,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:49:31,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:49:31,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:49:31,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:49:31,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:49:31,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:49:31,473 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:49:31,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:49:31,475 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:49:31,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:49:31,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:49:31,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:49:31,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:49:31,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:49:31,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:49:31,477 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:49:31,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:49:31,478 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:49:31,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:49:31,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:49:31,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:49:31,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:49:31,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:49:31,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:49:31,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:49:31,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:49:31,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:49:31,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:49:31,481 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:49:31,482 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:49:31,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:49:31,483 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_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2022-11-18 18:49:31,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:49:31,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:49:31,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:49:31,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:49:31,950 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:49:31,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-11-18 18:49:32,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/data/c925ce1d5/597e9c53ccb34a3da6eb7ae837400d69/FLAGe22676903 [2022-11-18 18:49:32,633 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:49:32,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-11-18 18:49:32,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/data/c925ce1d5/597e9c53ccb34a3da6eb7ae837400d69/FLAGe22676903 [2022-11-18 18:49:32,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/data/c925ce1d5/597e9c53ccb34a3da6eb7ae837400d69 [2022-11-18 18:49:33,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:49:33,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:49:33,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:49:33,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:49:33,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:49:33,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:49:32" (1/1) ... [2022-11-18 18:49:33,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44439125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33, skipping insertion in model container [2022-11-18 18:49:33,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:49:32" (1/1) ... [2022-11-18 18:49:33,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:49:33,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:49:33,325 WARN L234 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_08fec133-d0fc-489d-b520-24c5845c7457/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-11-18 18:49:33,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:49:33,355 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:49:33,399 WARN L234 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_08fec133-d0fc-489d-b520-24c5845c7457/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-11-18 18:49:33,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:49:33,428 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:49:33,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33 WrapperNode [2022-11-18 18:49:33,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:49:33,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:49:33,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:49:33,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:49:33,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,510 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 122 [2022-11-18 18:49:33,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:49:33,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:49:33,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:49:33,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:49:33,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,564 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:49:33,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:49:33,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:49:33,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:49:33,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (1/1) ... [2022-11-18 18:49:33,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:49:33,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:33,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:49:33,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fec133-d0fc-489d-b520-24c5845c7457/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:49:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:49:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:49:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:49:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:49:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:49:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:49:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:49:33,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:49:33,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:49:33,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:49:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:49:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:49:33,676 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:49:33,846 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:49:33,849 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:49:34,141 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:49:34,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:49:34,167 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:49:34,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:49:34 BoogieIcfgContainer [2022-11-18 18:49:34,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:49:34,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:49:34,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:49:34,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:49:34,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:49:32" (1/3) ... [2022-11-18 18:49:34,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9d686e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:49:34, skipping insertion in model container [2022-11-18 18:49:34,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:33" (2/3) ... [2022-11-18 18:49:34,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9d686e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:49:34, skipping insertion in model container [2022-11-18 18:49:34,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:49:34" (3/3) ... [2022-11-18 18:49:34,193 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-11-18 18:49:34,206 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:49:34,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:49:34,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:49:34,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:49:34,423 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:49:34,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 166 transitions, 348 flow [2022-11-18 18:49:34,704 INFO L130 PetriNetUnfolder]: 11/164 cut-off events. [2022-11-18 18:49:34,705 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:49:34,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 11/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-18 18:49:34,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 166 transitions, 348 flow [2022-11-18 18:49:34,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 155 transitions, 322 flow [2022-11-18 18:49:34,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:49:34,770 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;@4a8af974, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:49:34,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 18:49:34,838 INFO L130 PetriNetUnfolder]: 11/154 cut-off events. [2022-11-18 18:49:34,839 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:49:34,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:34,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:34,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:34,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:34,851 INFO L85 PathProgramCache]: Analyzing trace with hash 722694995, now seen corresponding path program 1 times [2022-11-18 18:49:34,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:34,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320630804] [2022-11-18 18:49:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:34,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:36,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320630804] [2022-11-18 18:49:36,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320630804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:36,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:36,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:36,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243651471] [2022-11-18 18:49:36,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:36,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:36,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:36,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:36,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:36,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:36,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 155 transitions, 322 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:36,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:36,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:36,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:37,308 INFO L130 PetriNetUnfolder]: 153/1009 cut-off events. [2022-11-18 18:49:37,309 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-18 18:49:37,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 1009 events. 153/1009 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7064 event pairs, 53 based on Foata normal form. 54/962 useless extension candidates. Maximal degree in co-relation 1118. Up to 134 conditions per place. [2022-11-18 18:49:37,328 INFO L137 encePairwiseOnDemand]: 136/166 looper letters, 106 selfloop transitions, 14 changer transitions 41/268 dead transitions. [2022-11-18 18:49:37,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 268 transitions, 903 flow [2022-11-18 18:49:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:49:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:49:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2655 transitions. [2022-11-18 18:49:37,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7616179001721171 [2022-11-18 18:49:37,366 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2655 transitions. [2022-11-18 18:49:37,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2655 transitions. [2022-11-18 18:49:37,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:37,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2655 transitions. [2022-11-18 18:49:37,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 126.42857142857143) internal successors, (2655), 21 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:37,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:37,414 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:37,416 INFO L175 Difference]: Start difference. First operand has 151 places, 155 transitions, 322 flow. Second operand 21 states and 2655 transitions. [2022-11-18 18:49:37,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 268 transitions, 903 flow [2022-11-18 18:49:37,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 268 transitions, 873 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:49:37,445 INFO L231 Difference]: Finished difference. Result has 182 places, 157 transitions, 434 flow [2022-11-18 18:49:37,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=434, PETRI_PLACES=182, PETRI_TRANSITIONS=157} [2022-11-18 18:49:37,457 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 31 predicate places. [2022-11-18 18:49:37,457 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 157 transitions, 434 flow [2022-11-18 18:49:37,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:37,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:37,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:37,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:49:37,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:37,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash 758306373, now seen corresponding path program 2 times [2022-11-18 18:49:37,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:37,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902423915] [2022-11-18 18:49:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:38,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:38,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902423915] [2022-11-18 18:49:38,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902423915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:38,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:38,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:38,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132179956] [2022-11-18 18:49:38,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:38,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:38,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:38,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:38,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:38,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 157 transitions, 434 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:38,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:38,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:38,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:39,575 INFO L130 PetriNetUnfolder]: 230/1348 cut-off events. [2022-11-18 18:49:39,575 INFO L131 PetriNetUnfolder]: For 1050/1056 co-relation queries the response was YES. [2022-11-18 18:49:39,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 1348 events. 230/1348 cut-off events. For 1050/1056 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9652 event pairs, 34 based on Foata normal form. 10/1314 useless extension candidates. Maximal degree in co-relation 2852. Up to 226 conditions per place. [2022-11-18 18:49:39,588 INFO L137 encePairwiseOnDemand]: 147/166 looper letters, 133 selfloop transitions, 36 changer transitions 38/314 dead transitions. [2022-11-18 18:49:39,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 314 transitions, 1604 flow [2022-11-18 18:49:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:49:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 18:49:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2878 transitions. [2022-11-18 18:49:39,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7537977998952331 [2022-11-18 18:49:39,597 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2878 transitions. [2022-11-18 18:49:39,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2878 transitions. [2022-11-18 18:49:39,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:39,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2878 transitions. [2022-11-18 18:49:39,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 125.1304347826087) internal successors, (2878), 23 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:39,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 166.0) internal successors, (3984), 24 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:39,620 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 166.0) internal successors, (3984), 24 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:39,621 INFO L175 Difference]: Start difference. First operand has 182 places, 157 transitions, 434 flow. Second operand 23 states and 2878 transitions. [2022-11-18 18:49:39,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 314 transitions, 1604 flow [2022-11-18 18:49:39,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 314 transitions, 1512 flow, removed 44 selfloop flow, removed 8 redundant places. [2022-11-18 18:49:39,640 INFO L231 Difference]: Finished difference. Result has 198 places, 188 transitions, 787 flow [2022-11-18 18:49:39,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=787, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2022-11-18 18:49:39,642 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 47 predicate places. [2022-11-18 18:49:39,642 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 787 flow [2022-11-18 18:49:39,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:39,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:39,643 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:39,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:49:39,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:39,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:39,645 INFO L85 PathProgramCache]: Analyzing trace with hash -503534527, now seen corresponding path program 3 times [2022-11-18 18:49:39,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:39,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167149471] [2022-11-18 18:49:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:39,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167149471] [2022-11-18 18:49:39,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167149471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:39,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:39,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:39,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525576898] [2022-11-18 18:49:39,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:39,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:39,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:40,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:40,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 787 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:40,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:40,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:40,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:40,719 INFO L130 PetriNetUnfolder]: 215/1335 cut-off events. [2022-11-18 18:49:40,720 INFO L131 PetriNetUnfolder]: For 2716/2722 co-relation queries the response was YES. [2022-11-18 18:49:40,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3479 conditions, 1335 events. 215/1335 cut-off events. For 2716/2722 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9485 event pairs, 109 based on Foata normal form. 1/1277 useless extension candidates. Maximal degree in co-relation 3410. Up to 254 conditions per place. [2022-11-18 18:49:40,736 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 122 selfloop transitions, 25 changer transitions 21/275 dead transitions. [2022-11-18 18:49:40,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 275 transitions, 1633 flow [2022-11-18 18:49:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:49:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:49:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1643 transitions. [2022-11-18 18:49:40,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7613531047265987 [2022-11-18 18:49:40,744 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1643 transitions. [2022-11-18 18:49:40,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1643 transitions. [2022-11-18 18:49:40,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:40,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1643 transitions. [2022-11-18 18:49:40,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.38461538461539) internal successors, (1643), 13 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:40,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:40,759 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:40,759 INFO L175 Difference]: Start difference. First operand has 198 places, 188 transitions, 787 flow. Second operand 13 states and 1643 transitions. [2022-11-18 18:49:40,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 275 transitions, 1633 flow [2022-11-18 18:49:40,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 275 transitions, 1544 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-11-18 18:49:40,792 INFO L231 Difference]: Finished difference. Result has 205 places, 197 transitions, 932 flow [2022-11-18 18:49:40,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=932, PETRI_PLACES=205, PETRI_TRANSITIONS=197} [2022-11-18 18:49:40,796 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 54 predicate places. [2022-11-18 18:49:40,796 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 197 transitions, 932 flow [2022-11-18 18:49:40,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:40,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:40,800 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:49:40,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:40,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash -189166153, now seen corresponding path program 4 times [2022-11-18 18:49:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:40,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461224109] [2022-11-18 18:49:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:40,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:41,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:41,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461224109] [2022-11-18 18:49:41,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461224109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:41,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:41,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692510342] [2022-11-18 18:49:41,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:41,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:41,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:41,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:41,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 197 transitions, 932 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:41,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:41,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:41,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:42,140 INFO L130 PetriNetUnfolder]: 217/1467 cut-off events. [2022-11-18 18:49:42,140 INFO L131 PetriNetUnfolder]: For 2986/2992 co-relation queries the response was YES. [2022-11-18 18:49:42,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 1467 events. 217/1467 cut-off events. For 2986/2992 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 10744 event pairs, 91 based on Foata normal form. 5/1410 useless extension candidates. Maximal degree in co-relation 3671. Up to 300 conditions per place. [2022-11-18 18:49:42,154 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 145 selfloop transitions, 23 changer transitions 24/299 dead transitions. [2022-11-18 18:49:42,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 299 transitions, 1962 flow [2022-11-18 18:49:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:49:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:49:42,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1894 transitions. [2022-11-18 18:49:42,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7606425702811245 [2022-11-18 18:49:42,160 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1894 transitions. [2022-11-18 18:49:42,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1894 transitions. [2022-11-18 18:49:42,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:42,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1894 transitions. [2022-11-18 18:49:42,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.26666666666667) internal successors, (1894), 15 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:42,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:42,171 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:42,171 INFO L175 Difference]: Start difference. First operand has 205 places, 197 transitions, 932 flow. Second operand 15 states and 1894 transitions. [2022-11-18 18:49:42,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 299 transitions, 1962 flow [2022-11-18 18:49:42,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 299 transitions, 1844 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-11-18 18:49:42,194 INFO L231 Difference]: Finished difference. Result has 221 places, 207 transitions, 1098 flow [2022-11-18 18:49:42,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1098, PETRI_PLACES=221, PETRI_TRANSITIONS=207} [2022-11-18 18:49:42,195 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 70 predicate places. [2022-11-18 18:49:42,195 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 207 transitions, 1098 flow [2022-11-18 18:49:42,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:42,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:42,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:42,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:49:42,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1384740205, now seen corresponding path program 5 times [2022-11-18 18:49:42,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:42,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265916147] [2022-11-18 18:49:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:42,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:42,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265916147] [2022-11-18 18:49:42,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265916147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:42,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:42,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:42,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641580027] [2022-11-18 18:49:42,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:42,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:42,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:42,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 207 transitions, 1098 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:42,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:42,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:42,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:43,560 INFO L130 PetriNetUnfolder]: 254/1727 cut-off events. [2022-11-18 18:49:43,560 INFO L131 PetriNetUnfolder]: For 4160/4166 co-relation queries the response was YES. [2022-11-18 18:49:43,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 1727 events. 254/1727 cut-off events. For 4160/4166 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12977 event pairs, 72 based on Foata normal form. 1/1658 useless extension candidates. Maximal degree in co-relation 4456. Up to 359 conditions per place. [2022-11-18 18:49:43,585 INFO L137 encePairwiseOnDemand]: 146/166 looper letters, 127 selfloop transitions, 34 changer transitions 23/291 dead transitions. [2022-11-18 18:49:43,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 291 transitions, 1954 flow [2022-11-18 18:49:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:49:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 18:49:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1766 transitions. [2022-11-18 18:49:43,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7598967297762479 [2022-11-18 18:49:43,593 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1766 transitions. [2022-11-18 18:49:43,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1766 transitions. [2022-11-18 18:49:43,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:43,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1766 transitions. [2022-11-18 18:49:43,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.14285714285714) internal successors, (1766), 14 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:43,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:43,608 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:43,609 INFO L175 Difference]: Start difference. First operand has 221 places, 207 transitions, 1098 flow. Second operand 14 states and 1766 transitions. [2022-11-18 18:49:43,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 291 transitions, 1954 flow [2022-11-18 18:49:43,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 291 transitions, 1912 flow, removed 21 selfloop flow, removed 7 redundant places. [2022-11-18 18:49:43,649 INFO L231 Difference]: Finished difference. Result has 229 places, 217 transitions, 1323 flow [2022-11-18 18:49:43,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1323, PETRI_PLACES=229, PETRI_TRANSITIONS=217} [2022-11-18 18:49:43,653 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 78 predicate places. [2022-11-18 18:49:43,654 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 217 transitions, 1323 flow [2022-11-18 18:49:43,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:43,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:43,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:43,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:49:43,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:43,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash -199703781, now seen corresponding path program 6 times [2022-11-18 18:49:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:43,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847543778] [2022-11-18 18:49:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:43,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:44,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:44,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847543778] [2022-11-18 18:49:44,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847543778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:44,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:44,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:44,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312750308] [2022-11-18 18:49:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:44,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:44,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:44,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:44,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:44,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 217 transitions, 1323 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:44,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:44,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:44,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:44,813 INFO L130 PetriNetUnfolder]: 250/1637 cut-off events. [2022-11-18 18:49:44,813 INFO L131 PetriNetUnfolder]: For 5028/5081 co-relation queries the response was YES. [2022-11-18 18:49:44,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4693 conditions, 1637 events. 250/1637 cut-off events. For 5028/5081 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12023 event pairs, 107 based on Foata normal form. 2/1575 useless extension candidates. Maximal degree in co-relation 4603. Up to 336 conditions per place. [2022-11-18 18:49:44,841 INFO L137 encePairwiseOnDemand]: 148/166 looper letters, 138 selfloop transitions, 19 changer transitions 26/290 dead transitions. [2022-11-18 18:49:44,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 290 transitions, 2124 flow [2022-11-18 18:49:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:49:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:49:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1872 transitions. [2022-11-18 18:49:44,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7518072289156627 [2022-11-18 18:49:44,847 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1872 transitions. [2022-11-18 18:49:44,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1872 transitions. [2022-11-18 18:49:44,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:44,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1872 transitions. [2022-11-18 18:49:44,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.8) internal successors, (1872), 15 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:44,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:44,862 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:44,862 INFO L175 Difference]: Start difference. First operand has 229 places, 217 transitions, 1323 flow. Second operand 15 states and 1872 transitions. [2022-11-18 18:49:44,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 290 transitions, 2124 flow [2022-11-18 18:49:44,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 290 transitions, 2067 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-11-18 18:49:44,983 INFO L231 Difference]: Finished difference. Result has 233 places, 208 transitions, 1220 flow [2022-11-18 18:49:44,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1220, PETRI_PLACES=233, PETRI_TRANSITIONS=208} [2022-11-18 18:49:44,984 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 82 predicate places. [2022-11-18 18:49:44,985 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 208 transitions, 1220 flow [2022-11-18 18:49:44,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:44,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:44,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:44,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:49:44,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:44,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:44,987 INFO L85 PathProgramCache]: Analyzing trace with hash 659857909, now seen corresponding path program 7 times [2022-11-18 18:49:44,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:44,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149729120] [2022-11-18 18:49:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:44,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:45,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:45,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149729120] [2022-11-18 18:49:45,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149729120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:45,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:45,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:45,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094732155] [2022-11-18 18:49:45,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:45,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:45,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:45,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:45,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:45,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 208 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:45,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:45,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:45,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:46,296 INFO L130 PetriNetUnfolder]: 248/1681 cut-off events. [2022-11-18 18:49:46,297 INFO L131 PetriNetUnfolder]: For 5217/5270 co-relation queries the response was YES. [2022-11-18 18:49:46,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 1681 events. 248/1681 cut-off events. For 5217/5270 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12518 event pairs, 116 based on Foata normal form. 6/1609 useless extension candidates. Maximal degree in co-relation 4693. Up to 418 conditions per place. [2022-11-18 18:49:46,325 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 145 selfloop transitions, 15 changer transitions 24/291 dead transitions. [2022-11-18 18:49:46,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 291 transitions, 2072 flow [2022-11-18 18:49:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:49:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:49:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1891 transitions. [2022-11-18 18:49:46,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594377510040161 [2022-11-18 18:49:46,335 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1891 transitions. [2022-11-18 18:49:46,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1891 transitions. [2022-11-18 18:49:46,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:46,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1891 transitions. [2022-11-18 18:49:46,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.06666666666666) internal successors, (1891), 15 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:46,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:46,365 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:46,375 INFO L175 Difference]: Start difference. First operand has 233 places, 208 transitions, 1220 flow. Second operand 15 states and 1891 transitions. [2022-11-18 18:49:46,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 291 transitions, 2072 flow [2022-11-18 18:49:46,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 291 transitions, 1941 flow, removed 34 selfloop flow, removed 13 redundant places. [2022-11-18 18:49:46,438 INFO L231 Difference]: Finished difference. Result has 231 places, 209 transitions, 1217 flow [2022-11-18 18:49:46,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1217, PETRI_PLACES=231, PETRI_TRANSITIONS=209} [2022-11-18 18:49:46,440 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 80 predicate places. [2022-11-18 18:49:46,441 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 209 transitions, 1217 flow [2022-11-18 18:49:46,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:46,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:46,444 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:46,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:49:46,444 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:46,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:46,445 INFO L85 PathProgramCache]: Analyzing trace with hash 851964725, now seen corresponding path program 8 times [2022-11-18 18:49:46,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:46,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586734114] [2022-11-18 18:49:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:46,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:46,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:46,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586734114] [2022-11-18 18:49:46,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586734114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:46,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:46,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:46,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773794428] [2022-11-18 18:49:46,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:46,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:46,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:46,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 209 transitions, 1217 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:46,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:46,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:46,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:47,956 INFO L130 PetriNetUnfolder]: 256/1705 cut-off events. [2022-11-18 18:49:47,959 INFO L131 PetriNetUnfolder]: For 5489/5533 co-relation queries the response was YES. [2022-11-18 18:49:47,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 1705 events. 256/1705 cut-off events. For 5489/5533 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12786 event pairs, 117 based on Foata normal form. 2/1638 useless extension candidates. Maximal degree in co-relation 4782. Up to 336 conditions per place. [2022-11-18 18:49:47,987 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 142 selfloop transitions, 22 changer transitions 20/291 dead transitions. [2022-11-18 18:49:47,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 291 transitions, 2199 flow [2022-11-18 18:49:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:49:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:49:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1642 transitions. [2022-11-18 18:49:47,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7608897126969416 [2022-11-18 18:49:47,993 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1642 transitions. [2022-11-18 18:49:47,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1642 transitions. [2022-11-18 18:49:47,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:47,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1642 transitions. [2022-11-18 18:49:48,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.3076923076923) internal successors, (1642), 13 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:48,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:48,012 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:48,012 INFO L175 Difference]: Start difference. First operand has 231 places, 209 transitions, 1217 flow. Second operand 13 states and 1642 transitions. [2022-11-18 18:49:48,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 291 transitions, 2199 flow [2022-11-18 18:49:48,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 291 transitions, 2088 flow, removed 43 selfloop flow, removed 10 redundant places. [2022-11-18 18:49:48,081 INFO L231 Difference]: Finished difference. Result has 233 places, 217 transitions, 1390 flow [2022-11-18 18:49:48,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1390, PETRI_PLACES=233, PETRI_TRANSITIONS=217} [2022-11-18 18:49:48,085 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 82 predicate places. [2022-11-18 18:49:48,085 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 217 transitions, 1390 flow [2022-11-18 18:49:48,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:48,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:48,087 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:48,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:49:48,087 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:48,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1885846677, now seen corresponding path program 9 times [2022-11-18 18:49:48,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:48,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552916102] [2022-11-18 18:49:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:48,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:48,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:48,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552916102] [2022-11-18 18:49:48,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552916102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:48,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:48,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747607482] [2022-11-18 18:49:48,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:48,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:48,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:48,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:48,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:48,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:48,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 217 transitions, 1390 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:48,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:48,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:48,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:49,234 INFO L130 PetriNetUnfolder]: 251/1694 cut-off events. [2022-11-18 18:49:49,235 INFO L131 PetriNetUnfolder]: For 5391/5435 co-relation queries the response was YES. [2022-11-18 18:49:49,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 1694 events. 251/1694 cut-off events. For 5391/5435 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12713 event pairs, 117 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 4751. Up to 336 conditions per place. [2022-11-18 18:49:49,262 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 140 selfloop transitions, 15 changer transitions 26/288 dead transitions. [2022-11-18 18:49:49,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 288 transitions, 2165 flow [2022-11-18 18:49:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:49:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 18:49:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1756 transitions. [2022-11-18 18:49:49,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7555938037865749 [2022-11-18 18:49:49,272 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1756 transitions. [2022-11-18 18:49:49,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1756 transitions. [2022-11-18 18:49:49,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:49,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1756 transitions. [2022-11-18 18:49:49,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 125.42857142857143) internal successors, (1756), 14 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:49,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:49,285 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:49,285 INFO L175 Difference]: Start difference. First operand has 233 places, 217 transitions, 1390 flow. Second operand 14 states and 1756 transitions. [2022-11-18 18:49:49,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 288 transitions, 2165 flow [2022-11-18 18:49:49,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 288 transitions, 2106 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-11-18 18:49:49,334 INFO L231 Difference]: Finished difference. Result has 241 places, 210 transitions, 1283 flow [2022-11-18 18:49:49,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1283, PETRI_PLACES=241, PETRI_TRANSITIONS=210} [2022-11-18 18:49:49,336 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 90 predicate places. [2022-11-18 18:49:49,336 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 210 transitions, 1283 flow [2022-11-18 18:49:49,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:49,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:49,337 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:49,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:49:49,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:49,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:49,339 INFO L85 PathProgramCache]: Analyzing trace with hash -710313429, now seen corresponding path program 10 times [2022-11-18 18:49:49,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:49,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79461016] [2022-11-18 18:49:49,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:49,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:49,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:49,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79461016] [2022-11-18 18:49:49,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79461016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:49,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:49,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:49,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087007340] [2022-11-18 18:49:49,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:49,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:49,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:49,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:49,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:49,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 210 transitions, 1283 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:49,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:49,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:49,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:50,645 INFO L130 PetriNetUnfolder]: 249/1742 cut-off events. [2022-11-18 18:49:50,646 INFO L131 PetriNetUnfolder]: For 5393/5437 co-relation queries the response was YES. [2022-11-18 18:49:50,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4875 conditions, 1742 events. 249/1742 cut-off events. For 5393/5437 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13210 event pairs, 122 based on Foata normal form. 9/1669 useless extension candidates. Maximal degree in co-relation 4767. Up to 418 conditions per place. [2022-11-18 18:49:50,675 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 121 selfloop transitions, 25 changer transitions 20/273 dead transitions. [2022-11-18 18:49:50,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 273 transitions, 2040 flow [2022-11-18 18:49:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:49:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:49:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1639 transitions. [2022-11-18 18:49:50,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594995366079703 [2022-11-18 18:49:50,680 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1639 transitions. [2022-11-18 18:49:50,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1639 transitions. [2022-11-18 18:49:50,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:50,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1639 transitions. [2022-11-18 18:49:50,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.07692307692308) internal successors, (1639), 13 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:50,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:50,691 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:50,691 INFO L175 Difference]: Start difference. First operand has 241 places, 210 transitions, 1283 flow. Second operand 13 states and 1639 transitions. [2022-11-18 18:49:50,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 273 transitions, 2040 flow [2022-11-18 18:49:50,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 273 transitions, 1922 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-11-18 18:49:50,734 INFO L231 Difference]: Finished difference. Result has 232 places, 214 transitions, 1358 flow [2022-11-18 18:49:50,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1358, PETRI_PLACES=232, PETRI_TRANSITIONS=214} [2022-11-18 18:49:50,737 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 81 predicate places. [2022-11-18 18:49:50,737 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 214 transitions, 1358 flow [2022-11-18 18:49:50,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:50,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:50,739 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:49:50,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:50,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash 974174317, now seen corresponding path program 11 times [2022-11-18 18:49:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:50,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799128002] [2022-11-18 18:49:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:50,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:51,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:51,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799128002] [2022-11-18 18:49:51,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799128002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:51,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:51,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396872743] [2022-11-18 18:49:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:51,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:51,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:51,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-18 18:49:51,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 214 transitions, 1358 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:51,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:51,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-18 18:49:51,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:51,755 INFO L130 PetriNetUnfolder]: 246/1681 cut-off events. [2022-11-18 18:49:51,755 INFO L131 PetriNetUnfolder]: For 4866/4910 co-relation queries the response was YES. [2022-11-18 18:49:51,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 1681 events. 246/1681 cut-off events. For 4866/4910 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12569 event pairs, 120 based on Foata normal form. 9/1610 useless extension candidates. Maximal degree in co-relation 4587. Up to 418 conditions per place. [2022-11-18 18:49:51,784 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 118 selfloop transitions, 18 changer transitions 26/269 dead transitions. [2022-11-18 18:49:51,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 269 transitions, 1921 flow [2022-11-18 18:49:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:49:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 18:49:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1755 transitions. [2022-11-18 18:49:51,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7551635111876076 [2022-11-18 18:49:51,789 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1755 transitions. [2022-11-18 18:49:51,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1755 transitions. [2022-11-18 18:49:51,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:51,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1755 transitions. [2022-11-18 18:49:51,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 125.35714285714286) internal successors, (1755), 14 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:51,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:51,798 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:51,798 INFO L175 Difference]: Start difference. First operand has 232 places, 214 transitions, 1358 flow. Second operand 14 states and 1755 transitions. [2022-11-18 18:49:51,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 269 transitions, 1921 flow [2022-11-18 18:49:51,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 269 transitions, 1821 flow, removed 27 selfloop flow, removed 9 redundant places. [2022-11-18 18:49:51,831 INFO L231 Difference]: Finished difference. Result has 234 places, 204 transitions, 1164 flow [2022-11-18 18:49:51,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1164, PETRI_PLACES=234, PETRI_TRANSITIONS=204} [2022-11-18 18:49:51,832 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 83 predicate places. [2022-11-18 18:49:51,832 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 204 transitions, 1164 flow [2022-11-18 18:49:51,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:51,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:51,833 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:51,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:49:51,836 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1829865364, now seen corresponding path program 1 times [2022-11-18 18:49:51,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:51,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651011043] [2022-11-18 18:49:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:51,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:52,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:52,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651011043] [2022-11-18 18:49:52,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651011043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:52,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:52,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:52,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650371878] [2022-11-18 18:49:52,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:52,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:52,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:52,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:52,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:52,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:49:52,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 204 transitions, 1164 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:52,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:52,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:49:52,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:52,723 INFO L130 PetriNetUnfolder]: 219/1288 cut-off events. [2022-11-18 18:49:52,723 INFO L131 PetriNetUnfolder]: For 5473/5561 co-relation queries the response was YES. [2022-11-18 18:49:52,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3816 conditions, 1288 events. 219/1288 cut-off events. For 5473/5561 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8448 event pairs, 69 based on Foata normal form. 43/1289 useless extension candidates. Maximal degree in co-relation 3773. Up to 236 conditions per place. [2022-11-18 18:49:52,739 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 143 selfloop transitions, 12 changer transitions 34/304 dead transitions. [2022-11-18 18:49:52,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 304 transitions, 2344 flow [2022-11-18 18:49:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:49:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:49:52,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2414 transitions. [2022-11-18 18:49:52,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7653772986683577 [2022-11-18 18:49:52,745 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2414 transitions. [2022-11-18 18:49:52,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2414 transitions. [2022-11-18 18:49:52,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:52,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2414 transitions. [2022-11-18 18:49:52,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 127.05263157894737) internal successors, (2414), 19 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:52,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:52,761 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:52,761 INFO L175 Difference]: Start difference. First operand has 234 places, 204 transitions, 1164 flow. Second operand 19 states and 2414 transitions. [2022-11-18 18:49:52,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 304 transitions, 2344 flow [2022-11-18 18:49:52,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 304 transitions, 2044 flow, removed 115 selfloop flow, removed 20 redundant places. [2022-11-18 18:49:52,786 INFO L231 Difference]: Finished difference. Result has 220 places, 184 transitions, 876 flow [2022-11-18 18:49:52,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=876, PETRI_PLACES=220, PETRI_TRANSITIONS=184} [2022-11-18 18:49:52,788 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 69 predicate places. [2022-11-18 18:49:52,788 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 184 transitions, 876 flow [2022-11-18 18:49:52,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:52,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:52,789 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:52,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:49:52,790 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:52,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1583119236, now seen corresponding path program 2 times [2022-11-18 18:49:52,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:52,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312110828] [2022-11-18 18:49:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:52,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:53,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:53,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312110828] [2022-11-18 18:49:53,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312110828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:53,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:53,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210669457] [2022-11-18 18:49:53,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:53,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:53,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:53,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:53,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:49:53,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 184 transitions, 876 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:53,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:53,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:49:53,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:53,767 INFO L130 PetriNetUnfolder]: 225/1388 cut-off events. [2022-11-18 18:49:53,768 INFO L131 PetriNetUnfolder]: For 5904/5965 co-relation queries the response was YES. [2022-11-18 18:49:53,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4386 conditions, 1388 events. 225/1388 cut-off events. For 5904/5965 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9368 event pairs, 87 based on Foata normal form. 19/1350 useless extension candidates. Maximal degree in co-relation 4341. Up to 353 conditions per place. [2022-11-18 18:49:53,786 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 104 selfloop transitions, 21 changer transitions 20/260 dead transitions. [2022-11-18 18:49:53,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 260 transitions, 1953 flow [2022-11-18 18:49:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:49:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:49:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2021 transitions. [2022-11-18 18:49:53,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7609186746987951 [2022-11-18 18:49:53,796 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2021 transitions. [2022-11-18 18:49:53,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2021 transitions. [2022-11-18 18:49:53,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:53,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2021 transitions. [2022-11-18 18:49:53,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.3125) internal successors, (2021), 16 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:53,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:53,815 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:53,815 INFO L175 Difference]: Start difference. First operand has 220 places, 184 transitions, 876 flow. Second operand 16 states and 2021 transitions. [2022-11-18 18:49:53,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 260 transitions, 1953 flow [2022-11-18 18:49:53,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 260 transitions, 1816 flow, removed 65 selfloop flow, removed 10 redundant places. [2022-11-18 18:49:53,849 INFO L231 Difference]: Finished difference. Result has 224 places, 199 transitions, 1121 flow [2022-11-18 18:49:53,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1121, PETRI_PLACES=224, PETRI_TRANSITIONS=199} [2022-11-18 18:49:53,851 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 73 predicate places. [2022-11-18 18:49:53,851 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 199 transitions, 1121 flow [2022-11-18 18:49:53,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:53,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:53,853 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:53,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:49:53,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:53,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:53,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1105547792, now seen corresponding path program 1 times [2022-11-18 18:49:53,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:53,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856183769] [2022-11-18 18:49:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:53,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:54,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:54,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856183769] [2022-11-18 18:49:54,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856183769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:54,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:54,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:54,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420228862] [2022-11-18 18:49:54,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:54,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:54,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:54,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:49:54,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 199 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:54,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:54,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:49:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:55,407 INFO L130 PetriNetUnfolder]: 260/1437 cut-off events. [2022-11-18 18:49:55,407 INFO L131 PetriNetUnfolder]: For 5853/5912 co-relation queries the response was YES. [2022-11-18 18:49:55,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4594 conditions, 1437 events. 260/1437 cut-off events. For 5853/5912 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9874 event pairs, 126 based on Foata normal form. 28/1407 useless extension candidates. Maximal degree in co-relation 4547. Up to 587 conditions per place. [2022-11-18 18:49:55,426 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 101 selfloop transitions, 5 changer transitions 34/263 dead transitions. [2022-11-18 18:49:55,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 263 transitions, 1757 flow [2022-11-18 18:49:55,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:49:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:49:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2383 transitions. [2022-11-18 18:49:55,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7555485098287889 [2022-11-18 18:49:55,435 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2383 transitions. [2022-11-18 18:49:55,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2383 transitions. [2022-11-18 18:49:55,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:55,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2383 transitions. [2022-11-18 18:49:55,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 125.42105263157895) internal successors, (2383), 19 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:55,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:55,455 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:55,456 INFO L175 Difference]: Start difference. First operand has 224 places, 199 transitions, 1121 flow. Second operand 19 states and 2383 transitions. [2022-11-18 18:49:55,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 263 transitions, 1757 flow [2022-11-18 18:49:55,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 263 transitions, 1666 flow, removed 40 selfloop flow, removed 7 redundant places. [2022-11-18 18:49:55,496 INFO L231 Difference]: Finished difference. Result has 243 places, 199 transitions, 1102 flow [2022-11-18 18:49:55,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1102, PETRI_PLACES=243, PETRI_TRANSITIONS=199} [2022-11-18 18:49:55,497 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 92 predicate places. [2022-11-18 18:49:55,498 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 199 transitions, 1102 flow [2022-11-18 18:49:55,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:55,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:55,499 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:55,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:49:55,500 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:55,500 INFO L85 PathProgramCache]: Analyzing trace with hash -868339342, now seen corresponding path program 2 times [2022-11-18 18:49:55,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:55,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872823432] [2022-11-18 18:49:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:55,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:55,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:55,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872823432] [2022-11-18 18:49:55,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872823432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:55,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:55,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:55,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018991539] [2022-11-18 18:49:55,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:55,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:55,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:55,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:55,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:55,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:49:55,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 199 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:55,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:55,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:49:55,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:56,485 INFO L130 PetriNetUnfolder]: 172/1076 cut-off events. [2022-11-18 18:49:56,485 INFO L131 PetriNetUnfolder]: For 4368/4418 co-relation queries the response was YES. [2022-11-18 18:49:56,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 1076 events. 172/1076 cut-off events. For 4368/4418 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6585 event pairs, 70 based on Foata normal form. 37/1069 useless extension candidates. Maximal degree in co-relation 3350. Up to 204 conditions per place. [2022-11-18 18:49:56,504 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 103 selfloop transitions, 15 changer transitions 22/262 dead transitions. [2022-11-18 18:49:56,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 262 transitions, 1883 flow [2022-11-18 18:49:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:49:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 18:49:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1780 transitions. [2022-11-18 18:49:56,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.76592082616179 [2022-11-18 18:49:56,510 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1780 transitions. [2022-11-18 18:49:56,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1780 transitions. [2022-11-18 18:49:56,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:56,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1780 transitions. [2022-11-18 18:49:56,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 127.14285714285714) internal successors, (1780), 14 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:56,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:56,523 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:56,523 INFO L175 Difference]: Start difference. First operand has 243 places, 199 transitions, 1102 flow. Second operand 14 states and 1780 transitions. [2022-11-18 18:49:56,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 262 transitions, 1883 flow [2022-11-18 18:49:56,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 262 transitions, 1741 flow, removed 51 selfloop flow, removed 17 redundant places. [2022-11-18 18:49:56,558 INFO L231 Difference]: Finished difference. Result has 237 places, 208 transitions, 1245 flow [2022-11-18 18:49:56,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1245, PETRI_PLACES=237, PETRI_TRANSITIONS=208} [2022-11-18 18:49:56,560 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 86 predicate places. [2022-11-18 18:49:56,561 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 208 transitions, 1245 flow [2022-11-18 18:49:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:56,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:56,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:56,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:49:56,563 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:56,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:56,563 INFO L85 PathProgramCache]: Analyzing trace with hash 542854362, now seen corresponding path program 3 times [2022-11-18 18:49:56,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:56,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914884667] [2022-11-18 18:49:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:56,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:56,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:56,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914884667] [2022-11-18 18:49:56,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914884667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:56,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:56,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080625728] [2022-11-18 18:49:56,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:56,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:56,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:56,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:56,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:49:56,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 208 transitions, 1245 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:56,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:56,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:49:56,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:57,469 INFO L130 PetriNetUnfolder]: 157/1020 cut-off events. [2022-11-18 18:49:57,469 INFO L131 PetriNetUnfolder]: For 4311/4371 co-relation queries the response was YES. [2022-11-18 18:49:57,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3365 conditions, 1020 events. 157/1020 cut-off events. For 4311/4371 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6163 event pairs, 58 based on Foata normal form. 9/992 useless extension candidates. Maximal degree in co-relation 3312. Up to 266 conditions per place. [2022-11-18 18:49:57,484 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 100 selfloop transitions, 28 changer transitions 20/268 dead transitions. [2022-11-18 18:49:57,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 268 transitions, 2088 flow [2022-11-18 18:49:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:49:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:49:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1896 transitions. [2022-11-18 18:49:57,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7614457831325301 [2022-11-18 18:49:57,492 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1896 transitions. [2022-11-18 18:49:57,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1896 transitions. [2022-11-18 18:49:57,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:57,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1896 transitions. [2022-11-18 18:49:57,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.4) internal successors, (1896), 15 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:57,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:57,507 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:57,508 INFO L175 Difference]: Start difference. First operand has 237 places, 208 transitions, 1245 flow. Second operand 15 states and 1896 transitions. [2022-11-18 18:49:57,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 268 transitions, 2088 flow [2022-11-18 18:49:57,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 268 transitions, 2016 flow, removed 35 selfloop flow, removed 6 redundant places. [2022-11-18 18:49:57,543 INFO L231 Difference]: Finished difference. Result has 251 places, 220 transitions, 1483 flow [2022-11-18 18:49:57,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1483, PETRI_PLACES=251, PETRI_TRANSITIONS=220} [2022-11-18 18:49:57,544 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 100 predicate places. [2022-11-18 18:49:57,547 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 220 transitions, 1483 flow [2022-11-18 18:49:57,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:57,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:57,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:57,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:49:57,551 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:57,552 INFO L85 PathProgramCache]: Analyzing trace with hash -405415398, now seen corresponding path program 4 times [2022-11-18 18:49:57,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:57,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897510975] [2022-11-18 18:49:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:57,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:57,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:57,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897510975] [2022-11-18 18:49:57,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897510975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:57,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:57,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:57,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123873565] [2022-11-18 18:49:57,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:57,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:57,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:57,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:57,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:57,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:49:57,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 220 transitions, 1483 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:57,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:57,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:49:57,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:58,548 INFO L130 PetriNetUnfolder]: 150/1058 cut-off events. [2022-11-18 18:49:58,549 INFO L131 PetriNetUnfolder]: For 5242/5306 co-relation queries the response was YES. [2022-11-18 18:49:58,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3563 conditions, 1058 events. 150/1058 cut-off events. For 5242/5306 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6621 event pairs, 59 based on Foata normal form. 9/1029 useless extension candidates. Maximal degree in co-relation 3503. Up to 247 conditions per place. [2022-11-18 18:49:58,572 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 119 selfloop transitions, 27 changer transitions 21/287 dead transitions. [2022-11-18 18:49:58,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 287 transitions, 2348 flow [2022-11-18 18:49:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:49:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:49:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2272 transitions. [2022-11-18 18:49:58,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7603748326639893 [2022-11-18 18:49:58,578 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2272 transitions. [2022-11-18 18:49:58,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2272 transitions. [2022-11-18 18:49:58,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:58,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2272 transitions. [2022-11-18 18:49:58,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.22222222222223) internal successors, (2272), 18 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:58,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:58,594 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:58,594 INFO L175 Difference]: Start difference. First operand has 251 places, 220 transitions, 1483 flow. Second operand 18 states and 2272 transitions. [2022-11-18 18:49:58,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 287 transitions, 2348 flow [2022-11-18 18:49:58,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 287 transitions, 2219 flow, removed 57 selfloop flow, removed 9 redundant places. [2022-11-18 18:49:58,642 INFO L231 Difference]: Finished difference. Result has 267 places, 223 transitions, 1586 flow [2022-11-18 18:49:58,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1586, PETRI_PLACES=267, PETRI_TRANSITIONS=223} [2022-11-18 18:49:58,643 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 116 predicate places. [2022-11-18 18:49:58,643 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 223 transitions, 1586 flow [2022-11-18 18:49:58,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:58,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:58,644 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:58,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:49:58,645 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:58,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:58,646 INFO L85 PathProgramCache]: Analyzing trace with hash 547184008, now seen corresponding path program 5 times [2022-11-18 18:49:58,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:58,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405354250] [2022-11-18 18:49:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:58,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:58,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:58,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405354250] [2022-11-18 18:49:58,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405354250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:58,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:58,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:58,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221948299] [2022-11-18 18:49:58,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:58,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:58,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:58,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:49:58,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 223 transitions, 1586 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:58,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:58,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:49:58,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:59,526 INFO L130 PetriNetUnfolder]: 146/1054 cut-off events. [2022-11-18 18:49:59,527 INFO L131 PetriNetUnfolder]: For 5856/5918 co-relation queries the response was YES. [2022-11-18 18:49:59,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 1054 events. 146/1054 cut-off events. For 5856/5918 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6597 event pairs, 51 based on Foata normal form. 13/1032 useless extension candidates. Maximal degree in co-relation 3566. Up to 248 conditions per place. [2022-11-18 18:49:59,545 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 115 selfloop transitions, 27 changer transitions 16/278 dead transitions. [2022-11-18 18:49:59,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 278 transitions, 2573 flow [2022-11-18 18:49:59,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:49:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 18:49:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1771 transitions. [2022-11-18 18:49:59,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620481927710844 [2022-11-18 18:49:59,550 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1771 transitions. [2022-11-18 18:49:59,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1771 transitions. [2022-11-18 18:49:59,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:59,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1771 transitions. [2022-11-18 18:49:59,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.5) internal successors, (1771), 14 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:59,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:59,562 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:59,562 INFO L175 Difference]: Start difference. First operand has 267 places, 223 transitions, 1586 flow. Second operand 14 states and 1771 transitions. [2022-11-18 18:49:59,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 278 transitions, 2573 flow [2022-11-18 18:49:59,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 278 transitions, 2469 flow, removed 49 selfloop flow, removed 12 redundant places. [2022-11-18 18:49:59,607 INFO L231 Difference]: Finished difference. Result has 264 places, 232 transitions, 1810 flow [2022-11-18 18:49:59,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1810, PETRI_PLACES=264, PETRI_TRANSITIONS=232} [2022-11-18 18:49:59,609 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 113 predicate places. [2022-11-18 18:49:59,609 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 232 transitions, 1810 flow [2022-11-18 18:49:59,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:59,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:59,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:59,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 18:49:59,611 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:49:59,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:59,612 INFO L85 PathProgramCache]: Analyzing trace with hash 720716202, now seen corresponding path program 6 times [2022-11-18 18:49:59,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:59,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111969523] [2022-11-18 18:49:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:59,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:59,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:59,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111969523] [2022-11-18 18:49:59,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111969523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:59,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:59,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:59,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622907923] [2022-11-18 18:49:59,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:59,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:59,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:59,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:49:59,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 232 transitions, 1810 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:59,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:59,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:49:59,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:00,643 INFO L130 PetriNetUnfolder]: 144/1081 cut-off events. [2022-11-18 18:50:00,644 INFO L131 PetriNetUnfolder]: For 5844/5906 co-relation queries the response was YES. [2022-11-18 18:50:00,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 1081 events. 144/1081 cut-off events. For 5844/5906 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6920 event pairs, 56 based on Foata normal form. 14/1058 useless extension candidates. Maximal degree in co-relation 3657. Up to 249 conditions per place. [2022-11-18 18:50:00,671 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 111 selfloop transitions, 31 changer transitions 17/279 dead transitions. [2022-11-18 18:50:00,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 279 transitions, 2615 flow [2022-11-18 18:50:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:50:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:50:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2017 transitions. [2022-11-18 18:50:00,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594126506024096 [2022-11-18 18:50:00,679 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2017 transitions. [2022-11-18 18:50:00,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2017 transitions. [2022-11-18 18:50:00,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:00,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2017 transitions. [2022-11-18 18:50:00,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.0625) internal successors, (2017), 16 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,691 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,691 INFO L175 Difference]: Start difference. First operand has 264 places, 232 transitions, 1810 flow. Second operand 16 states and 2017 transitions. [2022-11-18 18:50:00,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 279 transitions, 2615 flow [2022-11-18 18:50:00,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 279 transitions, 2489 flow, removed 39 selfloop flow, removed 8 redundant places. [2022-11-18 18:50:00,734 INFO L231 Difference]: Finished difference. Result has 275 places, 238 transitions, 1925 flow [2022-11-18 18:50:00,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1925, PETRI_PLACES=275, PETRI_TRANSITIONS=238} [2022-11-18 18:50:00,735 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 124 predicate places. [2022-11-18 18:50:00,736 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 238 transitions, 1925 flow [2022-11-18 18:50:00,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:00,737 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:00,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:50:00,737 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:00,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash -789308982, now seen corresponding path program 3 times [2022-11-18 18:50:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:00,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656812338] [2022-11-18 18:50:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:00,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:01,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:01,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656812338] [2022-11-18 18:50:01,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656812338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:01,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:01,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:01,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091622331] [2022-11-18 18:50:01,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:01,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:01,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:01,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:01,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:01,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 238 transitions, 1925 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:01,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:01,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:01,894 INFO L130 PetriNetUnfolder]: 200/1326 cut-off events. [2022-11-18 18:50:01,895 INFO L131 PetriNetUnfolder]: For 7221/7273 co-relation queries the response was YES. [2022-11-18 18:50:01,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4469 conditions, 1326 events. 200/1326 cut-off events. For 7221/7273 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9144 event pairs, 76 based on Foata normal form. 14/1292 useless extension candidates. Maximal degree in co-relation 4401. Up to 471 conditions per place. [2022-11-18 18:50:01,917 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 139 selfloop transitions, 10 changer transitions 28/303 dead transitions. [2022-11-18 18:50:01,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 303 transitions, 2784 flow [2022-11-18 18:50:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:50:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:50:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2262 transitions. [2022-11-18 18:50:01,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7570281124497992 [2022-11-18 18:50:01,922 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2262 transitions. [2022-11-18 18:50:01,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2262 transitions. [2022-11-18 18:50:01,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:01,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2262 transitions. [2022-11-18 18:50:01,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 125.66666666666667) internal successors, (2262), 18 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,934 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,935 INFO L175 Difference]: Start difference. First operand has 275 places, 238 transitions, 1925 flow. Second operand 18 states and 2262 transitions. [2022-11-18 18:50:01,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 303 transitions, 2784 flow [2022-11-18 18:50:01,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 303 transitions, 2702 flow, removed 31 selfloop flow, removed 10 redundant places. [2022-11-18 18:50:01,995 INFO L231 Difference]: Finished difference. Result has 288 places, 242 transitions, 1967 flow [2022-11-18 18:50:01,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1967, PETRI_PLACES=288, PETRI_TRANSITIONS=242} [2022-11-18 18:50:01,996 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 137 predicate places. [2022-11-18 18:50:01,996 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 242 transitions, 1967 flow [2022-11-18 18:50:01,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:01,997 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:01,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 18:50:01,998 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:01,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1258566644, now seen corresponding path program 7 times [2022-11-18 18:50:01,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:01,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297575770] [2022-11-18 18:50:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:02,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:02,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297575770] [2022-11-18 18:50:02,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297575770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:02,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:02,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:02,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290250958] [2022-11-18 18:50:02,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:02,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:02,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 242 transitions, 1967 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:02,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:02,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:03,025 INFO L130 PetriNetUnfolder]: 154/1156 cut-off events. [2022-11-18 18:50:03,025 INFO L131 PetriNetUnfolder]: For 6909/6976 co-relation queries the response was YES. [2022-11-18 18:50:03,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4065 conditions, 1156 events. 154/1156 cut-off events. For 6909/6976 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7719 event pairs, 65 based on Foata normal form. 16/1136 useless extension candidates. Maximal degree in co-relation 3990. Up to 237 conditions per place. [2022-11-18 18:50:03,045 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 113 selfloop transitions, 18 changer transitions 30/282 dead transitions. [2022-11-18 18:50:03,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 282 transitions, 2664 flow [2022-11-18 18:50:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:50:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:50:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2132 transitions. [2022-11-18 18:50:03,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7554925584691708 [2022-11-18 18:50:03,050 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2132 transitions. [2022-11-18 18:50:03,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2132 transitions. [2022-11-18 18:50:03,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:03,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2132 transitions. [2022-11-18 18:50:03,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.41176470588235) internal successors, (2132), 17 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,061 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,062 INFO L175 Difference]: Start difference. First operand has 288 places, 242 transitions, 1967 flow. Second operand 17 states and 2132 transitions. [2022-11-18 18:50:03,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 282 transitions, 2664 flow [2022-11-18 18:50:03,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 282 transitions, 2608 flow, removed 25 selfloop flow, removed 12 redundant places. [2022-11-18 18:50:03,120 INFO L231 Difference]: Finished difference. Result has 285 places, 226 transitions, 1693 flow [2022-11-18 18:50:03,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1693, PETRI_PLACES=285, PETRI_TRANSITIONS=226} [2022-11-18 18:50:03,121 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 134 predicate places. [2022-11-18 18:50:03,121 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 226 transitions, 1693 flow [2022-11-18 18:50:03,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:03,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:03,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 18:50:03,123 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:03,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash -654492566, now seen corresponding path program 8 times [2022-11-18 18:50:03,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:03,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865872408] [2022-11-18 18:50:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:03,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:03,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:03,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865872408] [2022-11-18 18:50:03,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865872408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:03,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:03,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:03,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349394642] [2022-11-18 18:50:03,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:03,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:03,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:03,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:03,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 226 transitions, 1693 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:03,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:03,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:04,015 INFO L130 PetriNetUnfolder]: 142/1102 cut-off events. [2022-11-18 18:50:04,015 INFO L131 PetriNetUnfolder]: For 5614/5679 co-relation queries the response was YES. [2022-11-18 18:50:04,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3717 conditions, 1102 events. 142/1102 cut-off events. For 5614/5679 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7178 event pairs, 70 based on Foata normal form. 13/1078 useless extension candidates. Maximal degree in co-relation 3648. Up to 232 conditions per place. [2022-11-18 18:50:04,034 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 101 selfloop transitions, 10 changer transitions 24/256 dead transitions. [2022-11-18 18:50:04,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 256 transitions, 2188 flow [2022-11-18 18:50:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1886 transitions. [2022-11-18 18:50:04,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.757429718875502 [2022-11-18 18:50:04,040 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1886 transitions. [2022-11-18 18:50:04,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1886 transitions. [2022-11-18 18:50:04,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:04,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1886 transitions. [2022-11-18 18:50:04,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.73333333333333) internal successors, (1886), 15 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:04,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:04,055 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:04,055 INFO L175 Difference]: Start difference. First operand has 285 places, 226 transitions, 1693 flow. Second operand 15 states and 1886 transitions. [2022-11-18 18:50:04,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 256 transitions, 2188 flow [2022-11-18 18:50:04,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 256 transitions, 2103 flow, removed 18 selfloop flow, removed 12 redundant places. [2022-11-18 18:50:04,108 INFO L231 Difference]: Finished difference. Result has 277 places, 212 transitions, 1394 flow [2022-11-18 18:50:04,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1394, PETRI_PLACES=277, PETRI_TRANSITIONS=212} [2022-11-18 18:50:04,109 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 126 predicate places. [2022-11-18 18:50:04,109 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 212 transitions, 1394 flow [2022-11-18 18:50:04,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:04,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:04,111 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:04,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 18:50:04,111 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:04,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:04,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2016635402, now seen corresponding path program 9 times [2022-11-18 18:50:04,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:04,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768214063] [2022-11-18 18:50:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:04,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:04,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:04,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768214063] [2022-11-18 18:50:04,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768214063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:04,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:04,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:04,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772927410] [2022-11-18 18:50:04,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:04,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:04,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:04,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 212 transitions, 1394 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:04,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:04,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:04,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:05,057 INFO L130 PetriNetUnfolder]: 138/1089 cut-off events. [2022-11-18 18:50:05,058 INFO L131 PetriNetUnfolder]: For 4701/4763 co-relation queries the response was YES. [2022-11-18 18:50:05,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3541 conditions, 1089 events. 138/1089 cut-off events. For 4701/4763 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7075 event pairs, 73 based on Foata normal form. 10/1060 useless extension candidates. Maximal degree in co-relation 3474. Up to 266 conditions per place. [2022-11-18 18:50:05,076 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 93 selfloop transitions, 19 changer transitions 19/252 dead transitions. [2022-11-18 18:50:05,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 252 transitions, 1991 flow [2022-11-18 18:50:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:50:05,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:50:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2131 transitions. [2022-11-18 18:50:05,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7551381998582566 [2022-11-18 18:50:05,082 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2131 transitions. [2022-11-18 18:50:05,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2131 transitions. [2022-11-18 18:50:05,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:05,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2131 transitions. [2022-11-18 18:50:05,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.3529411764706) internal successors, (2131), 17 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,094 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,094 INFO L175 Difference]: Start difference. First operand has 277 places, 212 transitions, 1394 flow. Second operand 17 states and 2131 transitions. [2022-11-18 18:50:05,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 252 transitions, 1991 flow [2022-11-18 18:50:05,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 252 transitions, 1889 flow, removed 30 selfloop flow, removed 14 redundant places. [2022-11-18 18:50:05,135 INFO L231 Difference]: Finished difference. Result has 271 places, 214 transitions, 1436 flow [2022-11-18 18:50:05,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1436, PETRI_PLACES=271, PETRI_TRANSITIONS=214} [2022-11-18 18:50:05,137 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 120 predicate places. [2022-11-18 18:50:05,138 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 214 transitions, 1436 flow [2022-11-18 18:50:05,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:05,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:05,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 18:50:05,139 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:05,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash 147936902, now seen corresponding path program 10 times [2022-11-18 18:50:05,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:05,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295151277] [2022-11-18 18:50:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:05,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:05,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:05,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295151277] [2022-11-18 18:50:05,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295151277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:05,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:05,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:05,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216173799] [2022-11-18 18:50:05,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:05,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:05,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:05,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:05,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:05,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:05,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 214 transitions, 1436 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:05,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:05,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:05,981 INFO L130 PetriNetUnfolder]: 133/1029 cut-off events. [2022-11-18 18:50:05,982 INFO L131 PetriNetUnfolder]: For 4226/4286 co-relation queries the response was YES. [2022-11-18 18:50:05,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 1029 events. 133/1029 cut-off events. For 4226/4286 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6423 event pairs, 73 based on Foata normal form. 10/1001 useless extension candidates. Maximal degree in co-relation 3253. Up to 249 conditions per place. [2022-11-18 18:50:05,997 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 85 selfloop transitions, 5 changer transitions 32/240 dead transitions. [2022-11-18 18:50:05,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 240 transitions, 1815 flow [2022-11-18 18:50:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1882 transitions. [2022-11-18 18:50:06,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7558232931726908 [2022-11-18 18:50:06,001 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1882 transitions. [2022-11-18 18:50:06,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1882 transitions. [2022-11-18 18:50:06,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:06,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1882 transitions. [2022-11-18 18:50:06,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.46666666666667) internal successors, (1882), 15 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,010 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,010 INFO L175 Difference]: Start difference. First operand has 271 places, 214 transitions, 1436 flow. Second operand 15 states and 1882 transitions. [2022-11-18 18:50:06,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 240 transitions, 1815 flow [2022-11-18 18:50:06,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 240 transitions, 1756 flow, removed 17 selfloop flow, removed 11 redundant places. [2022-11-18 18:50:06,044 INFO L231 Difference]: Finished difference. Result has 269 places, 192 transitions, 1060 flow [2022-11-18 18:50:06,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1060, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-11-18 18:50:06,045 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 118 predicate places. [2022-11-18 18:50:06,045 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1060 flow [2022-11-18 18:50:06,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:06,046 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:06,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 18:50:06,046 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:06,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1400888416, now seen corresponding path program 4 times [2022-11-18 18:50:06,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:06,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34342701] [2022-11-18 18:50:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:06,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:06,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:06,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34342701] [2022-11-18 18:50:06,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34342701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:06,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:06,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:06,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301458135] [2022-11-18 18:50:06,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:06,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:06,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:06,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:06,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:06,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:06,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1060 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:06,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:06,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:07,009 INFO L130 PetriNetUnfolder]: 138/1046 cut-off events. [2022-11-18 18:50:07,009 INFO L131 PetriNetUnfolder]: For 3688/3721 co-relation queries the response was YES. [2022-11-18 18:50:07,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 1046 events. 138/1046 cut-off events. For 3688/3721 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6525 event pairs, 63 based on Foata normal form. 7/1014 useless extension candidates. Maximal degree in co-relation 3011. Up to 224 conditions per place. [2022-11-18 18:50:07,025 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 105 selfloop transitions, 14 changer transitions 30/268 dead transitions. [2022-11-18 18:50:07,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 268 transitions, 1877 flow [2022-11-18 18:50:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:50:07,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:50:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2277 transitions. [2022-11-18 18:50:07,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620481927710844 [2022-11-18 18:50:07,037 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2277 transitions. [2022-11-18 18:50:07,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2277 transitions. [2022-11-18 18:50:07,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:07,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2277 transitions. [2022-11-18 18:50:07,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.5) internal successors, (2277), 18 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,052 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,052 INFO L175 Difference]: Start difference. First operand has 269 places, 192 transitions, 1060 flow. Second operand 18 states and 2277 transitions. [2022-11-18 18:50:07,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 268 transitions, 1877 flow [2022-11-18 18:50:07,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 268 transitions, 1783 flow, removed 31 selfloop flow, removed 17 redundant places. [2022-11-18 18:50:07,082 INFO L231 Difference]: Finished difference. Result has 259 places, 193 transitions, 1076 flow [2022-11-18 18:50:07,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1076, PETRI_PLACES=259, PETRI_TRANSITIONS=193} [2022-11-18 18:50:07,083 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 108 predicate places. [2022-11-18 18:50:07,084 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 193 transitions, 1076 flow [2022-11-18 18:50:07,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:07,085 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:07,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 18:50:07,086 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:07,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:07,086 INFO L85 PathProgramCache]: Analyzing trace with hash 286884380, now seen corresponding path program 5 times [2022-11-18 18:50:07,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:07,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774380569] [2022-11-18 18:50:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:07,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:07,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:07,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774380569] [2022-11-18 18:50:07,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774380569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:07,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:07,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:07,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084938226] [2022-11-18 18:50:07,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:07,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:07,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:07,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:07,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:07,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 193 transitions, 1076 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:07,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:07,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:08,145 INFO L130 PetriNetUnfolder]: 131/1046 cut-off events. [2022-11-18 18:50:08,145 INFO L131 PetriNetUnfolder]: For 4302/4335 co-relation queries the response was YES. [2022-11-18 18:50:08,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3088 conditions, 1046 events. 131/1046 cut-off events. For 4302/4335 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6465 event pairs, 53 based on Foata normal form. 8/1018 useless extension candidates. Maximal degree in co-relation 3023. Up to 324 conditions per place. [2022-11-18 18:50:08,162 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 78 selfloop transitions, 16 changer transitions 25/238 dead transitions. [2022-11-18 18:50:08,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 238 transitions, 1822 flow [2022-11-18 18:50:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:50:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:50:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2125 transitions. [2022-11-18 18:50:08,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7530120481927711 [2022-11-18 18:50:08,167 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2125 transitions. [2022-11-18 18:50:08,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2125 transitions. [2022-11-18 18:50:08,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:08,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2125 transitions. [2022-11-18 18:50:08,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.0) internal successors, (2125), 17 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,182 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,182 INFO L175 Difference]: Start difference. First operand has 259 places, 193 transitions, 1076 flow. Second operand 17 states and 2125 transitions. [2022-11-18 18:50:08,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 238 transitions, 1822 flow [2022-11-18 18:50:08,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 238 transitions, 1643 flow, removed 63 selfloop flow, removed 17 redundant places. [2022-11-18 18:50:08,208 INFO L231 Difference]: Finished difference. Result has 257 places, 200 transitions, 1135 flow [2022-11-18 18:50:08,209 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1135, PETRI_PLACES=257, PETRI_TRANSITIONS=200} [2022-11-18 18:50:08,210 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 106 predicate places. [2022-11-18 18:50:08,210 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 200 transitions, 1135 flow [2022-11-18 18:50:08,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:08,211 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:08,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 18:50:08,212 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:08,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1256242668, now seen corresponding path program 6 times [2022-11-18 18:50:08,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:08,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324141806] [2022-11-18 18:50:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:08,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:08,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324141806] [2022-11-18 18:50:08,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324141806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:08,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:08,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:08,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246531938] [2022-11-18 18:50:08,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:08,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:08,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:08,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:08,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 200 transitions, 1135 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:08,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:08,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:09,055 INFO L130 PetriNetUnfolder]: 125/1016 cut-off events. [2022-11-18 18:50:09,056 INFO L131 PetriNetUnfolder]: For 3712/3739 co-relation queries the response was YES. [2022-11-18 18:50:09,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 1016 events. 125/1016 cut-off events. For 3712/3739 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6223 event pairs, 44 based on Foata normal form. 4/981 useless extension candidates. Maximal degree in co-relation 2895. Up to 306 conditions per place. [2022-11-18 18:50:09,070 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 74 selfloop transitions, 23 changer transitions 21/237 dead transitions. [2022-11-18 18:50:09,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 237 transitions, 1779 flow [2022-11-18 18:50:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1879 transitions. [2022-11-18 18:50:09,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7546184738955823 [2022-11-18 18:50:09,075 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1879 transitions. [2022-11-18 18:50:09,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1879 transitions. [2022-11-18 18:50:09,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:09,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1879 transitions. [2022-11-18 18:50:09,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.26666666666667) internal successors, (1879), 15 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,084 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,084 INFO L175 Difference]: Start difference. First operand has 257 places, 200 transitions, 1135 flow. Second operand 15 states and 1879 transitions. [2022-11-18 18:50:09,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 237 transitions, 1779 flow [2022-11-18 18:50:09,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 237 transitions, 1676 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-11-18 18:50:09,111 INFO L231 Difference]: Finished difference. Result has 258 places, 206 transitions, 1246 flow [2022-11-18 18:50:09,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1246, PETRI_PLACES=258, PETRI_TRANSITIONS=206} [2022-11-18 18:50:09,112 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 107 predicate places. [2022-11-18 18:50:09,113 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 206 transitions, 1246 flow [2022-11-18 18:50:09,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:09,114 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:09,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 18:50:09,115 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:09,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1350350494, now seen corresponding path program 7 times [2022-11-18 18:50:09,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:09,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076398149] [2022-11-18 18:50:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:09,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:09,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:09,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076398149] [2022-11-18 18:50:09,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076398149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:09,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:09,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:09,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870796287] [2022-11-18 18:50:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:09,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:09,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:09,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 206 transitions, 1246 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:09,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:09,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:10,220 INFO L130 PetriNetUnfolder]: 118/951 cut-off events. [2022-11-18 18:50:10,220 INFO L131 PetriNetUnfolder]: For 3203/3230 co-relation queries the response was YES. [2022-11-18 18:50:10,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 951 events. 118/951 cut-off events. For 3203/3230 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5561 event pairs, 51 based on Foata normal form. 4/917 useless extension candidates. Maximal degree in co-relation 2658. Up to 305 conditions per place. [2022-11-18 18:50:10,234 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 68 selfloop transitions, 6 changer transitions 27/220 dead transitions. [2022-11-18 18:50:10,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 220 transitions, 1533 flow [2022-11-18 18:50:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1869 transitions. [2022-11-18 18:50:10,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7506024096385542 [2022-11-18 18:50:10,239 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1869 transitions. [2022-11-18 18:50:10,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1869 transitions. [2022-11-18 18:50:10,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:10,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1869 transitions. [2022-11-18 18:50:10,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.6) internal successors, (1869), 15 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,248 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,248 INFO L175 Difference]: Start difference. First operand has 258 places, 206 transitions, 1246 flow. Second operand 15 states and 1869 transitions. [2022-11-18 18:50:10,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 220 transitions, 1533 flow [2022-11-18 18:50:10,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 220 transitions, 1451 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-18 18:50:10,276 INFO L231 Difference]: Finished difference. Result has 261 places, 190 transitions, 1020 flow [2022-11-18 18:50:10,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1020, PETRI_PLACES=261, PETRI_TRANSITIONS=190} [2022-11-18 18:50:10,282 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 110 predicate places. [2022-11-18 18:50:10,282 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 190 transitions, 1020 flow [2022-11-18 18:50:10,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:10,284 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:10,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 18:50:10,287 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:10,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1805300492, now seen corresponding path program 8 times [2022-11-18 18:50:10,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:10,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085177120] [2022-11-18 18:50:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:10,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:10,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:10,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085177120] [2022-11-18 18:50:10,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085177120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:10,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:10,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:10,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681511731] [2022-11-18 18:50:10,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:10,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:10,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:10,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:10,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:10,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 190 transitions, 1020 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:10,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:10,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:11,231 INFO L130 PetriNetUnfolder]: 133/981 cut-off events. [2022-11-18 18:50:11,232 INFO L131 PetriNetUnfolder]: For 3410/3429 co-relation queries the response was YES. [2022-11-18 18:50:11,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 981 events. 133/981 cut-off events. For 3410/3429 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5825 event pairs, 56 based on Foata normal form. 5/948 useless extension candidates. Maximal degree in co-relation 2831. Up to 198 conditions per place. [2022-11-18 18:50:11,248 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 90 selfloop transitions, 19 changer transitions 25/253 dead transitions. [2022-11-18 18:50:11,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 253 transitions, 1843 flow [2022-11-18 18:50:11,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:50:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:50:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2024 transitions. [2022-11-18 18:50:11,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620481927710844 [2022-11-18 18:50:11,253 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2024 transitions. [2022-11-18 18:50:11,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2024 transitions. [2022-11-18 18:50:11,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:11,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2024 transitions. [2022-11-18 18:50:11,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.5) internal successors, (2024), 16 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:11,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:11,263 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:11,263 INFO L175 Difference]: Start difference. First operand has 261 places, 190 transitions, 1020 flow. Second operand 16 states and 2024 transitions. [2022-11-18 18:50:11,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 253 transitions, 1843 flow [2022-11-18 18:50:11,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 253 transitions, 1738 flow, removed 20 selfloop flow, removed 11 redundant places. [2022-11-18 18:50:11,290 INFO L231 Difference]: Finished difference. Result has 254 places, 198 transitions, 1146 flow [2022-11-18 18:50:11,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1146, PETRI_PLACES=254, PETRI_TRANSITIONS=198} [2022-11-18 18:50:11,294 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 103 predicate places. [2022-11-18 18:50:11,294 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 198 transitions, 1146 flow [2022-11-18 18:50:11,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:11,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:11,296 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:11,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 18:50:11,296 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash -291250686, now seen corresponding path program 9 times [2022-11-18 18:50:11,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:11,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637085956] [2022-11-18 18:50:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:11,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:11,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:11,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637085956] [2022-11-18 18:50:11,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637085956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:11,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:11,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248420391] [2022-11-18 18:50:11,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:11,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:11,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:11,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 198 transitions, 1146 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:11,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:11,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:11,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:12,077 INFO L130 PetriNetUnfolder]: 129/984 cut-off events. [2022-11-18 18:50:12,077 INFO L131 PetriNetUnfolder]: For 4192/4214 co-relation queries the response was YES. [2022-11-18 18:50:12,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 984 events. 129/984 cut-off events. For 4192/4214 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5928 event pairs, 54 based on Foata normal form. 5/953 useless extension candidates. Maximal degree in co-relation 2945. Up to 227 conditions per place. [2022-11-18 18:50:12,093 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 89 selfloop transitions, 23 changer transitions 21/252 dead transitions. [2022-11-18 18:50:12,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 252 transitions, 1950 flow [2022-11-18 18:50:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1897 transitions. [2022-11-18 18:50:12,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.761847389558233 [2022-11-18 18:50:12,098 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1897 transitions. [2022-11-18 18:50:12,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1897 transitions. [2022-11-18 18:50:12,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:12,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1897 transitions. [2022-11-18 18:50:12,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.46666666666667) internal successors, (1897), 15 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,123 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,123 INFO L175 Difference]: Start difference. First operand has 254 places, 198 transitions, 1146 flow. Second operand 15 states and 1897 transitions. [2022-11-18 18:50:12,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 252 transitions, 1950 flow [2022-11-18 18:50:12,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 252 transitions, 1819 flow, removed 57 selfloop flow, removed 10 redundant places. [2022-11-18 18:50:12,153 INFO L231 Difference]: Finished difference. Result has 258 places, 207 transitions, 1321 flow [2022-11-18 18:50:12,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1321, PETRI_PLACES=258, PETRI_TRANSITIONS=207} [2022-11-18 18:50:12,155 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 107 predicate places. [2022-11-18 18:50:12,156 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 207 transitions, 1321 flow [2022-11-18 18:50:12,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:12,157 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:12,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 18:50:12,157 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:12,158 INFO L85 PathProgramCache]: Analyzing trace with hash 154277274, now seen corresponding path program 10 times [2022-11-18 18:50:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:12,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606215117] [2022-11-18 18:50:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:12,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:12,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606215117] [2022-11-18 18:50:12,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606215117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:12,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:12,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263023519] [2022-11-18 18:50:12,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:12,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:12,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:12,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:12,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:12,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 207 transitions, 1321 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:12,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:12,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:13,094 INFO L130 PetriNetUnfolder]: 123/966 cut-off events. [2022-11-18 18:50:13,094 INFO L131 PetriNetUnfolder]: For 3826/3850 co-relation queries the response was YES. [2022-11-18 18:50:13,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 966 events. 123/966 cut-off events. For 3826/3850 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5762 event pairs, 50 based on Foata normal form. 7/940 useless extension candidates. Maximal degree in co-relation 2853. Up to 210 conditions per place. [2022-11-18 18:50:13,106 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 90 selfloop transitions, 21 changer transitions 26/256 dead transitions. [2022-11-18 18:50:13,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 256 transitions, 2003 flow [2022-11-18 18:50:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:50:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:50:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2141 transitions. [2022-11-18 18:50:13,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.758681785967399 [2022-11-18 18:50:13,112 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2141 transitions. [2022-11-18 18:50:13,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2141 transitions. [2022-11-18 18:50:13,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:13,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2141 transitions. [2022-11-18 18:50:13,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.94117647058823) internal successors, (2141), 17 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,123 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,123 INFO L175 Difference]: Start difference. First operand has 258 places, 207 transitions, 1321 flow. Second operand 17 states and 2141 transitions. [2022-11-18 18:50:13,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 256 transitions, 2003 flow [2022-11-18 18:50:13,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 256 transitions, 1837 flow, removed 53 selfloop flow, removed 9 redundant places. [2022-11-18 18:50:13,157 INFO L231 Difference]: Finished difference. Result has 269 places, 208 transitions, 1297 flow [2022-11-18 18:50:13,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1297, PETRI_PLACES=269, PETRI_TRANSITIONS=208} [2022-11-18 18:50:13,159 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 118 predicate places. [2022-11-18 18:50:13,160 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 208 transitions, 1297 flow [2022-11-18 18:50:13,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:13,161 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 18:50:13,162 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:13,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash 487889192, now seen corresponding path program 11 times [2022-11-18 18:50:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:13,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143660814] [2022-11-18 18:50:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:13,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:13,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143660814] [2022-11-18 18:50:13,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143660814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:13,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:13,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:13,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934561657] [2022-11-18 18:50:13,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:13,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:13,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:13,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:13,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 208 transitions, 1297 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:13,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:13,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:13,934 INFO L130 PetriNetUnfolder]: 113/909 cut-off events. [2022-11-18 18:50:13,935 INFO L131 PetriNetUnfolder]: For 3178/3197 co-relation queries the response was YES. [2022-11-18 18:50:13,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 909 events. 113/909 cut-off events. For 3178/3197 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5231 event pairs, 52 based on Foata normal form. 5/878 useless extension candidates. Maximal degree in co-relation 2575. Up to 206 conditions per place. [2022-11-18 18:50:13,949 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 84 selfloop transitions, 12 changer transitions 25/240 dead transitions. [2022-11-18 18:50:13,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 240 transitions, 1727 flow [2022-11-18 18:50:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1889 transitions. [2022-11-18 18:50:13,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7586345381526104 [2022-11-18 18:50:13,956 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1889 transitions. [2022-11-18 18:50:13,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1889 transitions. [2022-11-18 18:50:13,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:13,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1889 transitions. [2022-11-18 18:50:13,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.93333333333334) internal successors, (1889), 15 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,966 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,966 INFO L175 Difference]: Start difference. First operand has 269 places, 208 transitions, 1297 flow. Second operand 15 states and 1889 transitions. [2022-11-18 18:50:13,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 240 transitions, 1727 flow [2022-11-18 18:50:13,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 240 transitions, 1607 flow, removed 29 selfloop flow, removed 15 redundant places. [2022-11-18 18:50:13,997 INFO L231 Difference]: Finished difference. Result has 263 places, 195 transitions, 1090 flow [2022-11-18 18:50:13,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1090, PETRI_PLACES=263, PETRI_TRANSITIONS=195} [2022-11-18 18:50:13,999 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 112 predicate places. [2022-11-18 18:50:13,999 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 195 transitions, 1090 flow [2022-11-18 18:50:14,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:14,000 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 18:50:14,001 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1371685308, now seen corresponding path program 12 times [2022-11-18 18:50:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:14,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365617871] [2022-11-18 18:50:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:14,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:14,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:14,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365617871] [2022-11-18 18:50:14,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365617871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:14,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:14,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86641955] [2022-11-18 18:50:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:14,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:14,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:14,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:14,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 195 transitions, 1090 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:14,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:14,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:14,937 INFO L130 PetriNetUnfolder]: 114/909 cut-off events. [2022-11-18 18:50:14,938 INFO L131 PetriNetUnfolder]: For 2581/2600 co-relation queries the response was YES. [2022-11-18 18:50:14,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 909 events. 114/909 cut-off events. For 2581/2600 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5226 event pairs, 49 based on Foata normal form. 5/879 useless extension candidates. Maximal degree in co-relation 2493. Up to 166 conditions per place. [2022-11-18 18:50:14,947 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 94 selfloop transitions, 16 changer transitions 31/260 dead transitions. [2022-11-18 18:50:14,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 260 transitions, 1766 flow [2022-11-18 18:50:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:50:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:50:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2398 transitions. [2022-11-18 18:50:14,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7603043753963221 [2022-11-18 18:50:14,952 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2398 transitions. [2022-11-18 18:50:14,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2398 transitions. [2022-11-18 18:50:14,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:14,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2398 transitions. [2022-11-18 18:50:14,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 126.21052631578948) internal successors, (2398), 19 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,963 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,963 INFO L175 Difference]: Start difference. First operand has 263 places, 195 transitions, 1090 flow. Second operand 19 states and 2398 transitions. [2022-11-18 18:50:14,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 260 transitions, 1766 flow [2022-11-18 18:50:14,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 260 transitions, 1670 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-11-18 18:50:14,988 INFO L231 Difference]: Finished difference. Result has 260 places, 191 transitions, 1049 flow [2022-11-18 18:50:14,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1049, PETRI_PLACES=260, PETRI_TRANSITIONS=191} [2022-11-18 18:50:14,990 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 109 predicate places. [2022-11-18 18:50:14,990 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 191 transitions, 1049 flow [2022-11-18 18:50:14,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:14,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 18:50:14,992 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1443164602, now seen corresponding path program 13 times [2022-11-18 18:50:14,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:14,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659028751] [2022-11-18 18:50:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:14,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:15,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:15,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659028751] [2022-11-18 18:50:15,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659028751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:15,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:15,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:15,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760501132] [2022-11-18 18:50:15,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:15,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:15,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:15,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:15,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:15,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:15,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 191 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:15,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:15,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:15,858 INFO L130 PetriNetUnfolder]: 110/892 cut-off events. [2022-11-18 18:50:15,859 INFO L131 PetriNetUnfolder]: For 2659/2678 co-relation queries the response was YES. [2022-11-18 18:50:15,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 892 events. 110/892 cut-off events. For 2659/2678 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5097 event pairs, 52 based on Foata normal form. 5/860 useless extension candidates. Maximal degree in co-relation 2466. Up to 187 conditions per place. [2022-11-18 18:50:15,873 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 78 selfloop transitions, 20 changer transitions 23/240 dead transitions. [2022-11-18 18:50:15,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 240 transitions, 1689 flow [2022-11-18 18:50:15,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:50:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:50:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2018 transitions. [2022-11-18 18:50:15,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.759789156626506 [2022-11-18 18:50:15,878 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2018 transitions. [2022-11-18 18:50:15,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2018 transitions. [2022-11-18 18:50:15,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:15,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2018 transitions. [2022-11-18 18:50:15,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.125) internal successors, (2018), 16 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,892 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,892 INFO L175 Difference]: Start difference. First operand has 260 places, 191 transitions, 1049 flow. Second operand 16 states and 2018 transitions. [2022-11-18 18:50:15,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 240 transitions, 1689 flow [2022-11-18 18:50:15,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 240 transitions, 1558 flow, removed 37 selfloop flow, removed 18 redundant places. [2022-11-18 18:50:15,917 INFO L231 Difference]: Finished difference. Result has 255 places, 198 transitions, 1151 flow [2022-11-18 18:50:15,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1151, PETRI_PLACES=255, PETRI_TRANSITIONS=198} [2022-11-18 18:50:15,919 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 104 predicate places. [2022-11-18 18:50:15,919 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 198 transitions, 1151 flow [2022-11-18 18:50:15,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:15,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:15,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 18:50:15,921 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:15,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash 791240876, now seen corresponding path program 14 times [2022-11-18 18:50:15,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:15,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680250973] [2022-11-18 18:50:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:15,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:16,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:16,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680250973] [2022-11-18 18:50:16,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680250973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:16,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:16,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:16,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476224617] [2022-11-18 18:50:16,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:16,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:16,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:16,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:16,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 198 transitions, 1151 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:16,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:16,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:16,700 INFO L130 PetriNetUnfolder]: 103/877 cut-off events. [2022-11-18 18:50:16,700 INFO L131 PetriNetUnfolder]: For 2344/2363 co-relation queries the response was YES. [2022-11-18 18:50:16,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 877 events. 103/877 cut-off events. For 2344/2363 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4989 event pairs, 49 based on Foata normal form. 5/847 useless extension candidates. Maximal degree in co-relation 2337. Up to 184 conditions per place. [2022-11-18 18:50:16,708 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 75 selfloop transitions, 10 changer transitions 28/232 dead transitions. [2022-11-18 18:50:16,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 232 transitions, 1534 flow [2022-11-18 18:50:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:50:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:50:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2134 transitions. [2022-11-18 18:50:16,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7562012756909993 [2022-11-18 18:50:16,712 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2134 transitions. [2022-11-18 18:50:16,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2134 transitions. [2022-11-18 18:50:16,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:16,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2134 transitions. [2022-11-18 18:50:16,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.52941176470588) internal successors, (2134), 17 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,719 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,719 INFO L175 Difference]: Start difference. First operand has 255 places, 198 transitions, 1151 flow. Second operand 17 states and 2134 transitions. [2022-11-18 18:50:16,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 232 transitions, 1534 flow [2022-11-18 18:50:16,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 232 transitions, 1445 flow, removed 29 selfloop flow, removed 9 redundant places. [2022-11-18 18:50:16,738 INFO L231 Difference]: Finished difference. Result has 258 places, 184 transitions, 938 flow [2022-11-18 18:50:16,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=938, PETRI_PLACES=258, PETRI_TRANSITIONS=184} [2022-11-18 18:50:16,739 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 107 predicate places. [2022-11-18 18:50:16,739 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 184 transitions, 938 flow [2022-11-18 18:50:16,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:16,740 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:16,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 18:50:16,740 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash 212266352, now seen corresponding path program 15 times [2022-11-18 18:50:16,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:16,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943594197] [2022-11-18 18:50:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:16,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:16,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943594197] [2022-11-18 18:50:16,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943594197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:16,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:16,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:16,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996597285] [2022-11-18 18:50:16,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:16,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:16,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:16,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:16,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:16,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 184 transitions, 938 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:16,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:16,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:17,378 INFO L130 PetriNetUnfolder]: 96/804 cut-off events. [2022-11-18 18:50:17,378 INFO L131 PetriNetUnfolder]: For 2132/2151 co-relation queries the response was YES. [2022-11-18 18:50:17,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 804 events. 96/804 cut-off events. For 2132/2151 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4294 event pairs, 49 based on Foata normal form. 5/774 useless extension candidates. Maximal degree in co-relation 2082. Up to 166 conditions per place. [2022-11-18 18:50:17,386 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 65 selfloop transitions, 4 changer transitions 31/215 dead transitions. [2022-11-18 18:50:17,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 215 transitions, 1256 flow [2022-11-18 18:50:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1884 transitions. [2022-11-18 18:50:17,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7566265060240964 [2022-11-18 18:50:17,389 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1884 transitions. [2022-11-18 18:50:17,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1884 transitions. [2022-11-18 18:50:17,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:17,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1884 transitions. [2022-11-18 18:50:17,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.6) internal successors, (1884), 15 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,394 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,394 INFO L175 Difference]: Start difference. First operand has 258 places, 184 transitions, 938 flow. Second operand 15 states and 1884 transitions. [2022-11-18 18:50:17,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 215 transitions, 1256 flow [2022-11-18 18:50:17,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 215 transitions, 1169 flow, removed 17 selfloop flow, removed 19 redundant places. [2022-11-18 18:50:17,411 INFO L231 Difference]: Finished difference. Result has 240 places, 166 transitions, 724 flow [2022-11-18 18:50:17,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=724, PETRI_PLACES=240, PETRI_TRANSITIONS=166} [2022-11-18 18:50:17,412 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 89 predicate places. [2022-11-18 18:50:17,413 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 166 transitions, 724 flow [2022-11-18 18:50:17,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:17,414 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:17,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-18 18:50:17,414 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:17,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1124673564, now seen corresponding path program 11 times [2022-11-18 18:50:17,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:17,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993781222] [2022-11-18 18:50:17,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:17,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:17,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:17,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993781222] [2022-11-18 18:50:17,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993781222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:17,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:17,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059629849] [2022-11-18 18:50:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:17,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:17,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:17,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:17,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:17,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 166 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:17,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:17,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:18,140 INFO L130 PetriNetUnfolder]: 73/688 cut-off events. [2022-11-18 18:50:18,140 INFO L131 PetriNetUnfolder]: For 1759/1778 co-relation queries the response was YES. [2022-11-18 18:50:18,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 688 events. 73/688 cut-off events. For 1759/1778 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3409 event pairs, 34 based on Foata normal form. 3/662 useless extension candidates. Maximal degree in co-relation 1777. Up to 155 conditions per place. [2022-11-18 18:50:18,145 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 66 selfloop transitions, 8 changer transitions 26/215 dead transitions. [2022-11-18 18:50:18,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 215 transitions, 1249 flow [2022-11-18 18:50:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:50:18,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:50:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2370 transitions. [2022-11-18 18:50:18,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.75142675967026 [2022-11-18 18:50:18,152 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2370 transitions. [2022-11-18 18:50:18,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2370 transitions. [2022-11-18 18:50:18,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:18,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2370 transitions. [2022-11-18 18:50:18,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 124.73684210526316) internal successors, (2370), 19 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:18,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:18,162 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:18,162 INFO L175 Difference]: Start difference. First operand has 240 places, 166 transitions, 724 flow. Second operand 19 states and 2370 transitions. [2022-11-18 18:50:18,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 215 transitions, 1249 flow [2022-11-18 18:50:18,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 215 transitions, 1199 flow, removed 16 selfloop flow, removed 9 redundant places. [2022-11-18 18:50:18,177 INFO L231 Difference]: Finished difference. Result has 233 places, 164 transitions, 724 flow [2022-11-18 18:50:18,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=724, PETRI_PLACES=233, PETRI_TRANSITIONS=164} [2022-11-18 18:50:18,179 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 82 predicate places. [2022-11-18 18:50:18,179 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 164 transitions, 724 flow [2022-11-18 18:50:18,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:18,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:18,180 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:18,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 18:50:18,180 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:18,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1207614922, now seen corresponding path program 12 times [2022-11-18 18:50:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:18,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865296646] [2022-11-18 18:50:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:18,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:18,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:18,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865296646] [2022-11-18 18:50:18,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865296646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:18,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:18,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:18,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721280183] [2022-11-18 18:50:18,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:18,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:18,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:18,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 164 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:18,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:18,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:18,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:18,999 INFO L130 PetriNetUnfolder]: 71/662 cut-off events. [2022-11-18 18:50:19,000 INFO L131 PetriNetUnfolder]: For 1753/1772 co-relation queries the response was YES. [2022-11-18 18:50:19,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 662 events. 71/662 cut-off events. For 1753/1772 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3170 event pairs, 34 based on Foata normal form. 2/635 useless extension candidates. Maximal degree in co-relation 1721. Up to 185 conditions per place. [2022-11-18 18:50:19,009 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 49 selfloop transitions, 13 changer transitions 16/193 dead transitions. [2022-11-18 18:50:19,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 193 transitions, 1213 flow [2022-11-18 18:50:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1864 transitions. [2022-11-18 18:50:19,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7485943775100402 [2022-11-18 18:50:19,014 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1864 transitions. [2022-11-18 18:50:19,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1864 transitions. [2022-11-18 18:50:19,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:19,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1864 transitions. [2022-11-18 18:50:19,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.26666666666667) internal successors, (1864), 15 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,022 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,023 INFO L175 Difference]: Start difference. First operand has 233 places, 164 transitions, 724 flow. Second operand 15 states and 1864 transitions. [2022-11-18 18:50:19,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 193 transitions, 1213 flow [2022-11-18 18:50:19,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 193 transitions, 1101 flow, removed 53 selfloop flow, removed 15 redundant places. [2022-11-18 18:50:19,039 INFO L231 Difference]: Finished difference. Result has 227 places, 173 transitions, 851 flow [2022-11-18 18:50:19,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=851, PETRI_PLACES=227, PETRI_TRANSITIONS=173} [2022-11-18 18:50:19,041 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 76 predicate places. [2022-11-18 18:50:19,041 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 173 transitions, 851 flow [2022-11-18 18:50:19,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:19,042 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:19,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 18:50:19,042 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash 864236214, now seen corresponding path program 13 times [2022-11-18 18:50:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:19,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054306611] [2022-11-18 18:50:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:19,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:19,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:19,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054306611] [2022-11-18 18:50:19,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054306611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:19,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:19,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:19,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734789939] [2022-11-18 18:50:19,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:19,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:19,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:19,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:19,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:19,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 173 transitions, 851 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:19,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:19,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:19,846 INFO L130 PetriNetUnfolder]: 71/654 cut-off events. [2022-11-18 18:50:19,847 INFO L131 PetriNetUnfolder]: For 1692/1711 co-relation queries the response was YES. [2022-11-18 18:50:19,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 654 events. 71/654 cut-off events. For 1692/1711 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3127 event pairs, 34 based on Foata normal form. 2/627 useless extension candidates. Maximal degree in co-relation 1741. Up to 158 conditions per place. [2022-11-18 18:50:19,852 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 68 selfloop transitions, 9 changer transitions 21/213 dead transitions. [2022-11-18 18:50:19,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 213 transitions, 1356 flow [2022-11-18 18:50:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:50:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:50:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2245 transitions. [2022-11-18 18:50:19,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.751338688085676 [2022-11-18 18:50:19,864 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2245 transitions. [2022-11-18 18:50:19,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2245 transitions. [2022-11-18 18:50:19,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:19,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2245 transitions. [2022-11-18 18:50:19,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 124.72222222222223) internal successors, (2245), 18 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,874 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,875 INFO L175 Difference]: Start difference. First operand has 227 places, 173 transitions, 851 flow. Second operand 18 states and 2245 transitions. [2022-11-18 18:50:19,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 213 transitions, 1356 flow [2022-11-18 18:50:19,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 213 transitions, 1239 flow, removed 50 selfloop flow, removed 8 redundant places. [2022-11-18 18:50:19,891 INFO L231 Difference]: Finished difference. Result has 241 places, 172 transitions, 832 flow [2022-11-18 18:50:19,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=832, PETRI_PLACES=241, PETRI_TRANSITIONS=172} [2022-11-18 18:50:19,893 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 90 predicate places. [2022-11-18 18:50:19,893 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 172 transitions, 832 flow [2022-11-18 18:50:19,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:19,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:19,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 18:50:19,895 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:19,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:19,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1651138964, now seen corresponding path program 14 times [2022-11-18 18:50:19,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:19,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918701598] [2022-11-18 18:50:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:19,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:20,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:20,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918701598] [2022-11-18 18:50:20,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918701598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:20,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:20,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000551594] [2022-11-18 18:50:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:20,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:20,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:20,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 172 transitions, 832 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:20,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:20,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:20,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:20,808 INFO L130 PetriNetUnfolder]: 66/656 cut-off events. [2022-11-18 18:50:20,809 INFO L131 PetriNetUnfolder]: For 1517/1536 co-relation queries the response was YES. [2022-11-18 18:50:20,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 656 events. 66/656 cut-off events. For 1517/1536 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3177 event pairs, 34 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 1671. Up to 176 conditions per place. [2022-11-18 18:50:20,816 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 44 selfloop transitions, 11 changer transitions 20/190 dead transitions. [2022-11-18 18:50:20,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 190 transitions, 1169 flow [2022-11-18 18:50:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:50:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:50:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2105 transitions. [2022-11-18 18:50:20,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7459248759744862 [2022-11-18 18:50:20,821 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2105 transitions. [2022-11-18 18:50:20,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2105 transitions. [2022-11-18 18:50:20,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:20,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2105 transitions. [2022-11-18 18:50:20,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 123.82352941176471) internal successors, (2105), 17 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:20,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:20,831 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:20,831 INFO L175 Difference]: Start difference. First operand has 241 places, 172 transitions, 832 flow. Second operand 17 states and 2105 transitions. [2022-11-18 18:50:20,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 190 transitions, 1169 flow [2022-11-18 18:50:20,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 190 transitions, 1058 flow, removed 32 selfloop flow, removed 20 redundant places. [2022-11-18 18:50:20,846 INFO L231 Difference]: Finished difference. Result has 231 places, 169 transitions, 777 flow [2022-11-18 18:50:20,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=777, PETRI_PLACES=231, PETRI_TRANSITIONS=169} [2022-11-18 18:50:20,847 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 80 predicate places. [2022-11-18 18:50:20,847 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 169 transitions, 777 flow [2022-11-18 18:50:20,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:20,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:20,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:20,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-18 18:50:20,849 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:20,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash 50925656, now seen corresponding path program 15 times [2022-11-18 18:50:20,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:20,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949637442] [2022-11-18 18:50:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:20,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:21,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:21,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949637442] [2022-11-18 18:50:21,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949637442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:21,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:21,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:50:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203353704] [2022-11-18 18:50:21,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:21,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:21,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:21,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-18 18:50:21,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 169 transitions, 777 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:21,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-18 18:50:21,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:21,606 INFO L130 PetriNetUnfolder]: 61/578 cut-off events. [2022-11-18 18:50:21,607 INFO L131 PetriNetUnfolder]: For 1109/1128 co-relation queries the response was YES. [2022-11-18 18:50:21,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 578 events. 61/578 cut-off events. For 1109/1128 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2524 event pairs, 34 based on Foata normal form. 2/551 useless extension candidates. Maximal degree in co-relation 1409. Up to 158 conditions per place. [2022-11-18 18:50:21,612 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 37 selfloop transitions, 0 changer transitions 26/176 dead transitions. [2022-11-18 18:50:21,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 176 transitions, 921 flow [2022-11-18 18:50:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:50:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:50:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1855 transitions. [2022-11-18 18:50:21,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7449799196787149 [2022-11-18 18:50:21,616 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1855 transitions. [2022-11-18 18:50:21,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1855 transitions. [2022-11-18 18:50:21,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:21,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1855 transitions. [2022-11-18 18:50:21,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 123.66666666666667) internal successors, (1855), 15 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,625 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,625 INFO L175 Difference]: Start difference. First operand has 231 places, 169 transitions, 777 flow. Second operand 15 states and 1855 transitions. [2022-11-18 18:50:21,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 176 transitions, 921 flow [2022-11-18 18:50:21,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 176 transitions, 870 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-11-18 18:50:21,639 INFO L231 Difference]: Finished difference. Result has 229 places, 150 transitions, 538 flow [2022-11-18 18:50:21,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=538, PETRI_PLACES=229, PETRI_TRANSITIONS=150} [2022-11-18 18:50:21,641 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 78 predicate places. [2022-11-18 18:50:21,641 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 150 transitions, 538 flow [2022-11-18 18:50:21,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:21,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:21,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-18 18:50:21,642 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:21,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:21,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1267911969, now seen corresponding path program 1 times [2022-11-18 18:50:21,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:21,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331276604] [2022-11-18 18:50:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:21,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:22,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331276604] [2022-11-18 18:50:22,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331276604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:22,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:22,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:50:22,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750544064] [2022-11-18 18:50:22,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:22,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:50:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:23,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:50:23,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:50:23,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:50:23,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 150 transitions, 538 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:23,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:23,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:50:23,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:27,803 INFO L130 PetriNetUnfolder]: 451/1677 cut-off events. [2022-11-18 18:50:27,803 INFO L131 PetriNetUnfolder]: For 2309/2319 co-relation queries the response was YES. [2022-11-18 18:50:27,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 1677 events. 451/1677 cut-off events. For 2309/2319 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10337 event pairs, 10 based on Foata normal form. 4/1610 useless extension candidates. Maximal degree in co-relation 3966. Up to 177 conditions per place. [2022-11-18 18:50:27,816 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 192 selfloop transitions, 35 changer transitions 39/358 dead transitions. [2022-11-18 18:50:27,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 358 transitions, 2158 flow [2022-11-18 18:50:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 18:50:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 18:50:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3838 transitions. [2022-11-18 18:50:27,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6248778899381309 [2022-11-18 18:50:27,826 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3838 transitions. [2022-11-18 18:50:27,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3838 transitions. [2022-11-18 18:50:27,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:27,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3838 transitions. [2022-11-18 18:50:27,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 103.72972972972973) internal successors, (3838), 37 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:27,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 166.0) internal successors, (6308), 38 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:27,843 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 166.0) internal successors, (6308), 38 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:27,843 INFO L175 Difference]: Start difference. First operand has 229 places, 150 transitions, 538 flow. Second operand 37 states and 3838 transitions. [2022-11-18 18:50:27,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 358 transitions, 2158 flow [2022-11-18 18:50:27,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 358 transitions, 1880 flow, removed 134 selfloop flow, removed 14 redundant places. [2022-11-18 18:50:27,859 INFO L231 Difference]: Finished difference. Result has 245 places, 177 transitions, 791 flow [2022-11-18 18:50:27,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=791, PETRI_PLACES=245, PETRI_TRANSITIONS=177} [2022-11-18 18:50:27,860 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 94 predicate places. [2022-11-18 18:50:27,860 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 177 transitions, 791 flow [2022-11-18 18:50:27,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:27,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:27,862 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:27,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-18 18:50:27,862 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:27,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -291806139, now seen corresponding path program 2 times [2022-11-18 18:50:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:27,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107458303] [2022-11-18 18:50:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:27,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:29,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:29,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107458303] [2022-11-18 18:50:29,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107458303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:29,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:29,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:50:29,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601560539] [2022-11-18 18:50:29,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:29,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:50:29,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:50:29,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:50:29,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:50:29,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 177 transitions, 791 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:29,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:29,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:50:29,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:34,226 INFO L130 PetriNetUnfolder]: 482/1759 cut-off events. [2022-11-18 18:50:34,227 INFO L131 PetriNetUnfolder]: For 5764/5777 co-relation queries the response was YES. [2022-11-18 18:50:34,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5275 conditions, 1759 events. 482/1759 cut-off events. For 5764/5777 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10996 event pairs, 27 based on Foata normal form. 3/1686 useless extension candidates. Maximal degree in co-relation 5211. Up to 169 conditions per place. [2022-11-18 18:50:34,242 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 193 selfloop transitions, 59 changer transitions 43/387 dead transitions. [2022-11-18 18:50:34,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 387 transitions, 2841 flow [2022-11-18 18:50:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:50:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:50:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3641 transitions. [2022-11-18 18:50:34,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6266781411359724 [2022-11-18 18:50:34,249 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3641 transitions. [2022-11-18 18:50:34,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3641 transitions. [2022-11-18 18:50:34,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:34,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3641 transitions. [2022-11-18 18:50:34,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.02857142857142) internal successors, (3641), 35 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:34,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:34,265 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:34,265 INFO L175 Difference]: Start difference. First operand has 245 places, 177 transitions, 791 flow. Second operand 35 states and 3641 transitions. [2022-11-18 18:50:34,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 387 transitions, 2841 flow [2022-11-18 18:50:34,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 387 transitions, 2432 flow, removed 158 selfloop flow, removed 21 redundant places. [2022-11-18 18:50:34,296 INFO L231 Difference]: Finished difference. Result has 265 places, 210 transitions, 1288 flow [2022-11-18 18:50:34,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1288, PETRI_PLACES=265, PETRI_TRANSITIONS=210} [2022-11-18 18:50:34,297 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 114 predicate places. [2022-11-18 18:50:34,297 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 210 transitions, 1288 flow [2022-11-18 18:50:34,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:34,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:34,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:34,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-18 18:50:34,299 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1037878581, now seen corresponding path program 3 times [2022-11-18 18:50:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:34,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93226210] [2022-11-18 18:50:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93226210] [2022-11-18 18:50:35,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93226210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:35,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:35,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:50:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553517001] [2022-11-18 18:50:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:35,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:50:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:50:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:50:35,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:50:35,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 210 transitions, 1288 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:35,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:35,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:50:35,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:44,374 INFO L130 PetriNetUnfolder]: 516/1860 cut-off events. [2022-11-18 18:50:44,375 INFO L131 PetriNetUnfolder]: For 5256/5269 co-relation queries the response was YES. [2022-11-18 18:50:44,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5888 conditions, 1860 events. 516/1860 cut-off events. For 5256/5269 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12068 event pairs, 6 based on Foata normal form. 7/1788 useless extension candidates. Maximal degree in co-relation 5816. Up to 147 conditions per place. [2022-11-18 18:50:44,391 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 287 selfloop transitions, 35 changer transitions 124/538 dead transitions. [2022-11-18 18:50:44,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 538 transitions, 4402 flow [2022-11-18 18:50:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-18 18:50:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-11-18 18:50:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 6663 transitions. [2022-11-18 18:50:44,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.617516218721038 [2022-11-18 18:50:44,402 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 6663 transitions. [2022-11-18 18:50:44,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 6663 transitions. [2022-11-18 18:50:44,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:44,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 6663 transitions. [2022-11-18 18:50:44,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 102.50769230769231) internal successors, (6663), 65 states have internal predecessors, (6663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:44,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 166.0) internal successors, (10956), 66 states have internal predecessors, (10956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:44,429 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 166.0) internal successors, (10956), 66 states have internal predecessors, (10956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:44,430 INFO L175 Difference]: Start difference. First operand has 265 places, 210 transitions, 1288 flow. Second operand 65 states and 6663 transitions. [2022-11-18 18:50:44,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 538 transitions, 4402 flow [2022-11-18 18:50:44,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 538 transitions, 3693 flow, removed 167 selfloop flow, removed 20 redundant places. [2022-11-18 18:50:44,484 INFO L231 Difference]: Finished difference. Result has 347 places, 210 transitions, 1173 flow [2022-11-18 18:50:44,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=1173, PETRI_PLACES=347, PETRI_TRANSITIONS=210} [2022-11-18 18:50:44,485 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 196 predicate places. [2022-11-18 18:50:44,485 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 210 transitions, 1173 flow [2022-11-18 18:50:44,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:44,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:44,486 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:44,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-18 18:50:44,487 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:44,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1350818271, now seen corresponding path program 4 times [2022-11-18 18:50:44,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:44,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984983840] [2022-11-18 18:50:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:45,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984983840] [2022-11-18 18:50:45,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984983840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:45,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:45,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:50:45,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593847382] [2022-11-18 18:50:45,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:45,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:50:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:50:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:50:45,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:50:45,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 210 transitions, 1173 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:45,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:45,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:50:45,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:50,776 INFO L130 PetriNetUnfolder]: 553/1983 cut-off events. [2022-11-18 18:50:50,776 INFO L131 PetriNetUnfolder]: For 10012/10030 co-relation queries the response was YES. [2022-11-18 18:50:50,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 1983 events. 553/1983 cut-off events. For 10012/10030 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12840 event pairs, 44 based on Foata normal form. 5/1903 useless extension candidates. Maximal degree in co-relation 7170. Up to 198 conditions per place. [2022-11-18 18:50:50,804 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 250 selfloop transitions, 41 changer transitions 39/422 dead transitions. [2022-11-18 18:50:50,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 422 transitions, 3662 flow [2022-11-18 18:50:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:50:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:50:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3657 transitions. [2022-11-18 18:50:50,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6294320137693632 [2022-11-18 18:50:50,814 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3657 transitions. [2022-11-18 18:50:50,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3657 transitions. [2022-11-18 18:50:50,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:50,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3657 transitions. [2022-11-18 18:50:50,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.48571428571428) internal successors, (3657), 35 states have internal predecessors, (3657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:50,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:50,835 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:50,835 INFO L175 Difference]: Start difference. First operand has 347 places, 210 transitions, 1173 flow. Second operand 35 states and 3657 transitions. [2022-11-18 18:50:50,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 422 transitions, 3662 flow [2022-11-18 18:50:50,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 422 transitions, 3154 flow, removed 115 selfloop flow, removed 60 redundant places. [2022-11-18 18:50:50,914 INFO L231 Difference]: Finished difference. Result has 294 places, 234 transitions, 1535 flow [2022-11-18 18:50:50,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1535, PETRI_PLACES=294, PETRI_TRANSITIONS=234} [2022-11-18 18:50:50,918 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 143 predicate places. [2022-11-18 18:50:50,918 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 234 transitions, 1535 flow [2022-11-18 18:50:50,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:50,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:50,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-18 18:50:50,920 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash 490508601, now seen corresponding path program 5 times [2022-11-18 18:50:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:50,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544900542] [2022-11-18 18:50:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:52,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:52,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544900542] [2022-11-18 18:50:52,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544900542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:52,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:52,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:50:52,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939265760] [2022-11-18 18:50:52,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:52,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:50:52,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:50:52,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:50:52,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:50:52,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 234 transitions, 1535 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:52,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:52,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:50:52,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:57,271 INFO L130 PetriNetUnfolder]: 677/2397 cut-off events. [2022-11-18 18:50:57,271 INFO L131 PetriNetUnfolder]: For 11922/11942 co-relation queries the response was YES. [2022-11-18 18:50:57,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8729 conditions, 2397 events. 677/2397 cut-off events. For 11922/11942 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 16447 event pairs, 85 based on Foata normal form. 8/2299 useless extension candidates. Maximal degree in co-relation 8641. Up to 403 conditions per place. [2022-11-18 18:50:57,301 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 282 selfloop transitions, 46 changer transitions 36/456 dead transitions. [2022-11-18 18:50:57,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 456 transitions, 4232 flow [2022-11-18 18:50:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:50:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:50:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3654 transitions. [2022-11-18 18:50:57,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6289156626506024 [2022-11-18 18:50:57,308 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3654 transitions. [2022-11-18 18:50:57,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3654 transitions. [2022-11-18 18:50:57,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:57,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3654 transitions. [2022-11-18 18:50:57,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.4) internal successors, (3654), 35 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:57,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:57,323 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:57,324 INFO L175 Difference]: Start difference. First operand has 294 places, 234 transitions, 1535 flow. Second operand 35 states and 3654 transitions. [2022-11-18 18:50:57,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 456 transitions, 4232 flow [2022-11-18 18:50:57,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 456 transitions, 3703 flow, removed 183 selfloop flow, removed 19 redundant places. [2022-11-18 18:50:57,411 INFO L231 Difference]: Finished difference. Result has 321 places, 261 transitions, 1780 flow [2022-11-18 18:50:57,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1780, PETRI_PLACES=321, PETRI_TRANSITIONS=261} [2022-11-18 18:50:57,412 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 170 predicate places. [2022-11-18 18:50:57,412 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 261 transitions, 1780 flow [2022-11-18 18:50:57,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:57,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:57,414 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:57,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-18 18:50:57,414 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:50:57,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1358414417, now seen corresponding path program 6 times [2022-11-18 18:50:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:57,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607098262] [2022-11-18 18:50:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:57,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:58,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:58,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607098262] [2022-11-18 18:50:58,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607098262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:58,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:58,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:50:58,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448547688] [2022-11-18 18:50:58,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:58,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:50:58,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:58,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:50:58,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:50:58,621 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:50:58,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 261 transitions, 1780 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:58,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:58,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:50:58,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:51:04,267 INFO L130 PetriNetUnfolder]: 938/3190 cut-off events. [2022-11-18 18:51:04,268 INFO L131 PetriNetUnfolder]: For 19250/19275 co-relation queries the response was YES. [2022-11-18 18:51:04,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12391 conditions, 3190 events. 938/3190 cut-off events. For 19250/19275 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24217 event pairs, 162 based on Foata normal form. 7/3050 useless extension candidates. Maximal degree in co-relation 12289. Up to 995 conditions per place. [2022-11-18 18:51:04,315 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 338 selfloop transitions, 58 changer transitions 39/527 dead transitions. [2022-11-18 18:51:04,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 527 transitions, 5400 flow [2022-11-18 18:51:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:51:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:51:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3674 transitions. [2022-11-18 18:51:04,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6323580034423408 [2022-11-18 18:51:04,321 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3674 transitions. [2022-11-18 18:51:04,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3674 transitions. [2022-11-18 18:51:04,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:51:04,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3674 transitions. [2022-11-18 18:51:04,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.97142857142858) internal successors, (3674), 35 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) [2022-11-18 18:51:04,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:04,330 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:04,331 INFO L175 Difference]: Start difference. First operand has 321 places, 261 transitions, 1780 flow. Second operand 35 states and 3674 transitions. [2022-11-18 18:51:04,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 527 transitions, 5400 flow [2022-11-18 18:51:04,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 527 transitions, 4910 flow, removed 192 selfloop flow, removed 19 redundant places. [2022-11-18 18:51:04,436 INFO L231 Difference]: Finished difference. Result has 353 places, 292 transitions, 2347 flow [2022-11-18 18:51:04,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2347, PETRI_PLACES=353, PETRI_TRANSITIONS=292} [2022-11-18 18:51:04,437 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 202 predicate places. [2022-11-18 18:51:04,438 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 292 transitions, 2347 flow [2022-11-18 18:51:04,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:04,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:51:04,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:04,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-18 18:51:04,439 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:51:04,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:04,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1827760597, now seen corresponding path program 7 times [2022-11-18 18:51:04,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:04,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446499904] [2022-11-18 18:51:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:04,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:51:05,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:05,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446499904] [2022-11-18 18:51:05,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446499904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:05,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:05,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:51:05,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7878542] [2022-11-18 18:51:05,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:05,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:51:05,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:05,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:51:05,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:51:05,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:51:05,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 292 transitions, 2347 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:05,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:51:05,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:51:05,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:51:14,895 INFO L130 PetriNetUnfolder]: 1117/3934 cut-off events. [2022-11-18 18:51:14,895 INFO L131 PetriNetUnfolder]: For 30824/30853 co-relation queries the response was YES. [2022-11-18 18:51:14,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16404 conditions, 3934 events. 1117/3934 cut-off events. For 30824/30853 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 32063 event pairs, 208 based on Foata normal form. 9/3773 useless extension candidates. Maximal degree in co-relation 16284. Up to 948 conditions per place. [2022-11-18 18:51:14,946 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 426 selfloop transitions, 26 changer transitions 112/656 dead transitions. [2022-11-18 18:51:14,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 656 transitions, 7257 flow [2022-11-18 18:51:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 18:51:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-18 18:51:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 6400 transitions. [2022-11-18 18:51:14,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6218422075398368 [2022-11-18 18:51:14,955 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 6400 transitions. [2022-11-18 18:51:14,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 6400 transitions. [2022-11-18 18:51:14,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:51:14,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 6400 transitions. [2022-11-18 18:51:14,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 103.2258064516129) internal successors, (6400), 62 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:14,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:14,978 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:14,979 INFO L175 Difference]: Start difference. First operand has 353 places, 292 transitions, 2347 flow. Second operand 62 states and 6400 transitions. [2022-11-18 18:51:14,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 656 transitions, 7257 flow [2022-11-18 18:51:15,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 656 transitions, 6521 flow, removed 367 selfloop flow, removed 15 redundant places. [2022-11-18 18:51:15,215 INFO L231 Difference]: Finished difference. Result has 441 places, 301 transitions, 2363 flow [2022-11-18 18:51:15,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2363, PETRI_PLACES=441, PETRI_TRANSITIONS=301} [2022-11-18 18:51:15,216 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 290 predicate places. [2022-11-18 18:51:15,216 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 301 transitions, 2363 flow [2022-11-18 18:51:15,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:15,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:51:15,217 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:15,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-18 18:51:15,217 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:51:15,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash 838993579, now seen corresponding path program 8 times [2022-11-18 18:51:15,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:15,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11012011] [2022-11-18 18:51:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:15,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:51:16,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:16,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11012011] [2022-11-18 18:51:16,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11012011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:16,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:16,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:51:16,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728852926] [2022-11-18 18:51:16,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:16,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:51:16,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:51:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:51:16,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:51:16,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 301 transitions, 2363 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:16,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:51:16,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:51:16,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:51:22,712 INFO L130 PetriNetUnfolder]: 1214/4280 cut-off events. [2022-11-18 18:51:22,713 INFO L131 PetriNetUnfolder]: For 64254/64285 co-relation queries the response was YES. [2022-11-18 18:51:22,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20728 conditions, 4280 events. 1214/4280 cut-off events. For 64254/64285 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 35748 event pairs, 190 based on Foata normal form. 6/4099 useless extension candidates. Maximal degree in co-relation 20565. Up to 872 conditions per place. [2022-11-18 18:51:22,806 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 381 selfloop transitions, 53 changer transitions 43/569 dead transitions. [2022-11-18 18:51:22,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 569 transitions, 7466 flow [2022-11-18 18:51:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:51:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:51:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3661 transitions. [2022-11-18 18:51:22,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6301204819277109 [2022-11-18 18:51:22,814 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3661 transitions. [2022-11-18 18:51:22,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3661 transitions. [2022-11-18 18:51:22,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:51:22,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3661 transitions. [2022-11-18 18:51:22,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.6) internal successors, (3661), 35 states have internal predecessors, (3661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:22,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:22,834 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:22,835 INFO L175 Difference]: Start difference. First operand has 441 places, 301 transitions, 2363 flow. Second operand 35 states and 3661 transitions. [2022-11-18 18:51:22,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 569 transitions, 7466 flow [2022-11-18 18:51:23,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 569 transitions, 6901 flow, removed 243 selfloop flow, removed 29 redundant places. [2022-11-18 18:51:23,245 INFO L231 Difference]: Finished difference. Result has 425 places, 327 transitions, 2949 flow [2022-11-18 18:51:23,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2949, PETRI_PLACES=425, PETRI_TRANSITIONS=327} [2022-11-18 18:51:23,246 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 274 predicate places. [2022-11-18 18:51:23,246 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 327 transitions, 2949 flow [2022-11-18 18:51:23,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:23,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:51:23,247 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:23,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-18 18:51:23,248 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:51:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2064064143, now seen corresponding path program 9 times [2022-11-18 18:51:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:23,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778780681] [2022-11-18 18:51:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:23,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:51:24,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:24,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778780681] [2022-11-18 18:51:24,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778780681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:24,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:24,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:51:24,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902465794] [2022-11-18 18:51:24,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:24,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:51:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:24,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:51:24,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:51:24,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:51:24,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 327 transitions, 2949 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:24,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:51:24,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:51:24,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:51:31,770 INFO L130 PetriNetUnfolder]: 1412/4793 cut-off events. [2022-11-18 18:51:31,771 INFO L131 PetriNetUnfolder]: For 79098/79126 co-relation queries the response was YES. [2022-11-18 18:51:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25128 conditions, 4793 events. 1412/4793 cut-off events. For 79098/79126 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 41028 event pairs, 365 based on Foata normal form. 7/4607 useless extension candidates. Maximal degree in co-relation 24963. Up to 1457 conditions per place. [2022-11-18 18:51:31,870 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 425 selfloop transitions, 45 changer transitions 36/598 dead transitions. [2022-11-18 18:51:31,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 598 transitions, 7839 flow [2022-11-18 18:51:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:51:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:51:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3686 transitions. [2022-11-18 18:51:31,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6344234079173838 [2022-11-18 18:51:31,875 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3686 transitions. [2022-11-18 18:51:31,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3686 transitions. [2022-11-18 18:51:31,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:51:31,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3686 transitions. [2022-11-18 18:51:31,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.31428571428572) internal successors, (3686), 35 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:31,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:31,889 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:31,889 INFO L175 Difference]: Start difference. First operand has 425 places, 327 transitions, 2949 flow. Second operand 35 states and 3686 transitions. [2022-11-18 18:51:31,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 598 transitions, 7839 flow [2022-11-18 18:51:32,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 598 transitions, 7186 flow, removed 256 selfloop flow, removed 19 redundant places. [2022-11-18 18:51:32,409 INFO L231 Difference]: Finished difference. Result has 455 places, 355 transitions, 3518 flow [2022-11-18 18:51:32,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3518, PETRI_PLACES=455, PETRI_TRANSITIONS=355} [2022-11-18 18:51:32,410 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 304 predicate places. [2022-11-18 18:51:32,410 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 355 transitions, 3518 flow [2022-11-18 18:51:32,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:32,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:51:32,411 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:32,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-18 18:51:32,411 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:51:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:32,411 INFO L85 PathProgramCache]: Analyzing trace with hash -226695475, now seen corresponding path program 10 times [2022-11-18 18:51:32,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:32,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490698145] [2022-11-18 18:51:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:32,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:51:33,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:33,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490698145] [2022-11-18 18:51:33,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490698145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:33,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:33,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:51:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960441709] [2022-11-18 18:51:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:33,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:51:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:51:33,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:51:33,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:51:33,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 355 transitions, 3518 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:33,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:51:33,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:51:33,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:51:41,652 INFO L130 PetriNetUnfolder]: 1484/5028 cut-off events. [2022-11-18 18:51:41,652 INFO L131 PetriNetUnfolder]: For 98866/98901 co-relation queries the response was YES. [2022-11-18 18:51:41,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27834 conditions, 5028 events. 1484/5028 cut-off events. For 98866/98901 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 43772 event pairs, 322 based on Foata normal form. 11/4814 useless extension candidates. Maximal degree in co-relation 27653. Up to 1270 conditions per place. [2022-11-18 18:51:41,768 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 495 selfloop transitions, 60 changer transitions 43/690 dead transitions. [2022-11-18 18:51:41,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 690 transitions, 10436 flow [2022-11-18 18:51:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:51:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:51:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3687 transitions. [2022-11-18 18:51:41,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6345955249569707 [2022-11-18 18:51:41,775 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3687 transitions. [2022-11-18 18:51:41,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3687 transitions. [2022-11-18 18:51:41,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:51:41,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3687 transitions. [2022-11-18 18:51:41,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.34285714285714) internal successors, (3687), 35 states have internal predecessors, (3687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:41,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:41,787 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:41,788 INFO L175 Difference]: Start difference. First operand has 455 places, 355 transitions, 3518 flow. Second operand 35 states and 3687 transitions. [2022-11-18 18:51:41,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 690 transitions, 10436 flow [2022-11-18 18:51:42,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 690 transitions, 9471 flow, removed 460 selfloop flow, removed 18 redundant places. [2022-11-18 18:51:42,431 INFO L231 Difference]: Finished difference. Result has 480 places, 377 transitions, 3784 flow [2022-11-18 18:51:42,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3784, PETRI_PLACES=480, PETRI_TRANSITIONS=377} [2022-11-18 18:51:42,432 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 329 predicate places. [2022-11-18 18:51:42,432 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 377 transitions, 3784 flow [2022-11-18 18:51:42,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:42,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:51:42,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:42,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-18 18:51:42,433 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:51:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:42,434 INFO L85 PathProgramCache]: Analyzing trace with hash -266546299, now seen corresponding path program 11 times [2022-11-18 18:51:42,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:42,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137569265] [2022-11-18 18:51:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:42,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:51:43,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:43,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137569265] [2022-11-18 18:51:43,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137569265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:43,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:43,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:51:43,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140536928] [2022-11-18 18:51:43,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:43,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:51:43,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:43,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:51:43,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:51:43,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:51:43,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 377 transitions, 3784 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:43,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:51:43,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:51:43,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:51:53,692 INFO L130 PetriNetUnfolder]: 1622/5772 cut-off events. [2022-11-18 18:51:53,692 INFO L131 PetriNetUnfolder]: For 118628/118663 co-relation queries the response was YES. [2022-11-18 18:51:53,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31333 conditions, 5772 events. 1622/5772 cut-off events. For 118628/118663 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 52185 event pairs, 269 based on Foata normal form. 8/5520 useless extension candidates. Maximal degree in co-relation 31143. Up to 1570 conditions per place. [2022-11-18 18:51:53,839 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 537 selfloop transitions, 66 changer transitions 76/771 dead transitions. [2022-11-18 18:51:53,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 771 transitions, 10868 flow [2022-11-18 18:51:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 18:51:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-18 18:51:53,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 5449 transitions. [2022-11-18 18:51:53,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6193453057513071 [2022-11-18 18:51:53,847 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 5449 transitions. [2022-11-18 18:51:53,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 5449 transitions. [2022-11-18 18:51:53,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:51:53,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 5449 transitions. [2022-11-18 18:51:53,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 102.81132075471699) internal successors, (5449), 53 states have internal predecessors, (5449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:53,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 166.0) internal successors, (8964), 54 states have internal predecessors, (8964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:53,860 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 166.0) internal successors, (8964), 54 states have internal predecessors, (8964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:53,860 INFO L175 Difference]: Start difference. First operand has 480 places, 377 transitions, 3784 flow. Second operand 53 states and 5449 transitions. [2022-11-18 18:51:53,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 771 transitions, 10868 flow [2022-11-18 18:51:54,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 771 transitions, 10227 flow, removed 282 selfloop flow, removed 20 redundant places. [2022-11-18 18:51:54,670 INFO L231 Difference]: Finished difference. Result has 545 places, 389 transitions, 3925 flow [2022-11-18 18:51:54,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=3273, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=3925, PETRI_PLACES=545, PETRI_TRANSITIONS=389} [2022-11-18 18:51:54,671 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 394 predicate places. [2022-11-18 18:51:54,671 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 389 transitions, 3925 flow [2022-11-18 18:51:54,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:54,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:51:54,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:54,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-18 18:51:54,673 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:51:54,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1419615169, now seen corresponding path program 12 times [2022-11-18 18:51:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:54,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192179660] [2022-11-18 18:51:54,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:54,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:51:55,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:55,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192179660] [2022-11-18 18:51:55,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192179660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:55,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:55,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:51:55,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500858106] [2022-11-18 18:51:55,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:55,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:51:55,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:55,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:51:55,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:51:55,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:51:55,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 389 transitions, 3925 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:55,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:51:55,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:51:55,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:52:03,283 INFO L130 PetriNetUnfolder]: 1671/5671 cut-off events. [2022-11-18 18:52:03,283 INFO L131 PetriNetUnfolder]: For 151834/151873 co-relation queries the response was YES. [2022-11-18 18:52:03,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34773 conditions, 5671 events. 1671/5671 cut-off events. For 151834/151873 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 50517 event pairs, 392 based on Foata normal form. 11/5451 useless extension candidates. Maximal degree in co-relation 34548. Up to 1830 conditions per place. [2022-11-18 18:52:03,456 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 489 selfloop transitions, 51 changer transitions 36/668 dead transitions. [2022-11-18 18:52:03,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 668 transitions, 9625 flow [2022-11-18 18:52:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:52:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:52:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3698 transitions. [2022-11-18 18:52:03,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6364888123924268 [2022-11-18 18:52:03,462 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3698 transitions. [2022-11-18 18:52:03,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3698 transitions. [2022-11-18 18:52:03,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:52:03,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3698 transitions. [2022-11-18 18:52:03,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.65714285714286) internal successors, (3698), 35 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:03,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:03,470 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:03,470 INFO L175 Difference]: Start difference. First operand has 545 places, 389 transitions, 3925 flow. Second operand 35 states and 3698 transitions. [2022-11-18 18:52:03,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 668 transitions, 9625 flow [2022-11-18 18:52:04,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 668 transitions, 9072 flow, removed 231 selfloop flow, removed 26 redundant places. [2022-11-18 18:52:04,796 INFO L231 Difference]: Finished difference. Result has 541 places, 411 transitions, 4510 flow [2022-11-18 18:52:04,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4510, PETRI_PLACES=541, PETRI_TRANSITIONS=411} [2022-11-18 18:52:04,797 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 390 predicate places. [2022-11-18 18:52:04,797 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 411 transitions, 4510 flow [2022-11-18 18:52:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:04,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:52:04,798 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:52:04,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-18 18:52:04,798 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:52:04,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1216646191, now seen corresponding path program 13 times [2022-11-18 18:52:04,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:04,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266807055] [2022-11-18 18:52:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:04,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:52:06,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:06,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266807055] [2022-11-18 18:52:06,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266807055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:06,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:52:06,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:52:06,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453852235] [2022-11-18 18:52:06,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:06,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:52:06,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:06,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:52:06,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:52:06,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:52:06,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 411 transitions, 4510 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:06,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:52:06,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:52:06,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:52:15,251 INFO L130 PetriNetUnfolder]: 1868/6398 cut-off events. [2022-11-18 18:52:15,251 INFO L131 PetriNetUnfolder]: For 149903/149940 co-relation queries the response was YES. [2022-11-18 18:52:15,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37101 conditions, 6398 events. 1868/6398 cut-off events. For 149903/149940 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 59110 event pairs, 469 based on Foata normal form. 8/6124 useless extension candidates. Maximal degree in co-relation 36874. Up to 2142 conditions per place. [2022-11-18 18:52:15,529 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 519 selfloop transitions, 50 changer transitions 43/704 dead transitions. [2022-11-18 18:52:15,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 704 transitions, 10905 flow [2022-11-18 18:52:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:52:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:52:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3693 transitions. [2022-11-18 18:52:15,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6356282271944923 [2022-11-18 18:52:15,535 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3693 transitions. [2022-11-18 18:52:15,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3693 transitions. [2022-11-18 18:52:15,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:52:15,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3693 transitions. [2022-11-18 18:52:15,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.51428571428572) internal successors, (3693), 35 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:15,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:15,548 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:15,548 INFO L175 Difference]: Start difference. First operand has 541 places, 411 transitions, 4510 flow. Second operand 35 states and 3693 transitions. [2022-11-18 18:52:15,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 704 transitions, 10905 flow [2022-11-18 18:52:16,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 704 transitions, 10289 flow, removed 251 selfloop flow, removed 20 redundant places. [2022-11-18 18:52:16,734 INFO L231 Difference]: Finished difference. Result has 570 places, 440 transitions, 4970 flow [2022-11-18 18:52:16,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4970, PETRI_PLACES=570, PETRI_TRANSITIONS=440} [2022-11-18 18:52:16,735 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 419 predicate places. [2022-11-18 18:52:16,735 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 440 transitions, 4970 flow [2022-11-18 18:52:16,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:16,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:52:16,736 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:52:16,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-18 18:52:16,737 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:52:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1940837419, now seen corresponding path program 14 times [2022-11-18 18:52:16,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:16,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63382899] [2022-11-18 18:52:16,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:16,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:52:18,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:18,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63382899] [2022-11-18 18:52:18,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63382899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:18,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:52:18,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:52:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038251594] [2022-11-18 18:52:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:52:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:52:18,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:52:18,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:52:18,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 440 transitions, 4970 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:18,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:52:18,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:52:18,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:52:27,084 INFO L130 PetriNetUnfolder]: 1969/6713 cut-off events. [2022-11-18 18:52:27,085 INFO L131 PetriNetUnfolder]: For 174447/174488 co-relation queries the response was YES. [2022-11-18 18:52:27,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40667 conditions, 6713 events. 1969/6713 cut-off events. For 174447/174488 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 62459 event pairs, 464 based on Foata normal form. 11/6438 useless extension candidates. Maximal degree in co-relation 40423. Up to 2184 conditions per place. [2022-11-18 18:52:27,530 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 553 selfloop transitions, 55 changer transitions 36/736 dead transitions. [2022-11-18 18:52:27,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 736 transitions, 11441 flow [2022-11-18 18:52:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:52:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:52:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3700 transitions. [2022-11-18 18:52:27,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6368330464716007 [2022-11-18 18:52:27,537 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3700 transitions. [2022-11-18 18:52:27,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3700 transitions. [2022-11-18 18:52:27,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:52:27,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3700 transitions. [2022-11-18 18:52:27,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.71428571428571) internal successors, (3700), 35 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:27,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:27,551 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:27,551 INFO L175 Difference]: Start difference. First operand has 570 places, 440 transitions, 4970 flow. Second operand 35 states and 3700 transitions. [2022-11-18 18:52:27,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 736 transitions, 11441 flow [2022-11-18 18:52:29,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 736 transitions, 10712 flow, removed 334 selfloop flow, removed 18 redundant places. [2022-11-18 18:52:29,434 INFO L231 Difference]: Finished difference. Result has 597 places, 464 transitions, 5373 flow [2022-11-18 18:52:29,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5373, PETRI_PLACES=597, PETRI_TRANSITIONS=464} [2022-11-18 18:52:29,436 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 446 predicate places. [2022-11-18 18:52:29,437 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 464 transitions, 5373 flow [2022-11-18 18:52:29,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:29,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:52:29,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:52:29,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-18 18:52:29,439 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:52:29,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:29,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1064064553, now seen corresponding path program 15 times [2022-11-18 18:52:29,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:29,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18465796] [2022-11-18 18:52:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:29,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:52:30,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:30,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18465796] [2022-11-18 18:52:30,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18465796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:30,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:52:30,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:52:30,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728781771] [2022-11-18 18:52:30,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:30,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:52:30,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:30,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:52:30,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:52:30,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:52:30,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 464 transitions, 5373 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:30,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:52:30,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:52:30,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:52:40,942 INFO L130 PetriNetUnfolder]: 2183/7428 cut-off events. [2022-11-18 18:52:40,942 INFO L131 PetriNetUnfolder]: For 216307/216355 co-relation queries the response was YES. [2022-11-18 18:52:41,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46982 conditions, 7428 events. 2183/7428 cut-off events. For 216307/216355 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 71223 event pairs, 561 based on Foata normal form. 13/7100 useless extension candidates. Maximal degree in co-relation 46727. Up to 2337 conditions per place. [2022-11-18 18:52:41,251 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 642 selfloop transitions, 96 changer transitions 43/873 dead transitions. [2022-11-18 18:52:41,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 873 transitions, 15311 flow [2022-11-18 18:52:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:52:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:52:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3667 transitions. [2022-11-18 18:52:41,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6311531841652324 [2022-11-18 18:52:41,256 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3667 transitions. [2022-11-18 18:52:41,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3667 transitions. [2022-11-18 18:52:41,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:52:41,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3667 transitions. [2022-11-18 18:52:41,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.77142857142857) internal successors, (3667), 35 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:41,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:41,270 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:41,270 INFO L175 Difference]: Start difference. First operand has 597 places, 464 transitions, 5373 flow. Second operand 35 states and 3667 transitions. [2022-11-18 18:52:41,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 873 transitions, 15311 flow [2022-11-18 18:52:43,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 873 transitions, 14579 flow, removed 315 selfloop flow, removed 20 redundant places. [2022-11-18 18:52:43,535 INFO L231 Difference]: Finished difference. Result has 627 places, 493 transitions, 6196 flow [2022-11-18 18:52:43,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4834, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6196, PETRI_PLACES=627, PETRI_TRANSITIONS=493} [2022-11-18 18:52:43,536 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 476 predicate places. [2022-11-18 18:52:43,536 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 493 transitions, 6196 flow [2022-11-18 18:52:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:43,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:52:43,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:52:43,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-18 18:52:43,538 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:52:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:43,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1906938823, now seen corresponding path program 16 times [2022-11-18 18:52:43,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:43,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120476439] [2022-11-18 18:52:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:43,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:52:44,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:44,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120476439] [2022-11-18 18:52:44,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120476439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:44,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:52:44,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:52:44,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814430614] [2022-11-18 18:52:44,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:44,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:52:44,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:44,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:52:44,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:52:44,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:52:44,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 493 transitions, 6196 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:52:44,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:52:44,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:52:44,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:53:00,266 INFO L130 PetriNetUnfolder]: 2725/9203 cut-off events. [2022-11-18 18:53:00,266 INFO L131 PetriNetUnfolder]: For 328451/328497 co-relation queries the response was YES. [2022-11-18 18:53:00,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62127 conditions, 9203 events. 2725/9203 cut-off events. For 328451/328497 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 91913 event pairs, 986 based on Foata normal form. 10/8795 useless extension candidates. Maximal degree in co-relation 61855. Up to 2900 conditions per place. [2022-11-18 18:53:00,762 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 669 selfloop transitions, 34 changer transitions 76/871 dead transitions. [2022-11-18 18:53:00,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 871 transitions, 14810 flow [2022-11-18 18:53:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 18:53:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-18 18:53:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 5547 transitions. [2022-11-18 18:53:00,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6304842009547624 [2022-11-18 18:53:00,770 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 5547 transitions. [2022-11-18 18:53:00,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 5547 transitions. [2022-11-18 18:53:00,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:53:00,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 5547 transitions. [2022-11-18 18:53:00,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 104.66037735849056) internal successors, (5547), 53 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:53:00,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 166.0) internal successors, (8964), 54 states have internal predecessors, (8964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:53:00,789 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 166.0) internal successors, (8964), 54 states have internal predecessors, (8964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:53:00,789 INFO L175 Difference]: Start difference. First operand has 627 places, 493 transitions, 6196 flow. Second operand 53 states and 5547 transitions. [2022-11-18 18:53:00,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 871 transitions, 14810 flow [2022-11-18 18:53:03,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 871 transitions, 13970 flow, removed 415 selfloop flow, removed 16 redundant places. [2022-11-18 18:53:03,738 INFO L231 Difference]: Finished difference. Result has 698 places, 507 transitions, 6197 flow [2022-11-18 18:53:03,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=5572, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6197, PETRI_PLACES=698, PETRI_TRANSITIONS=507} [2022-11-18 18:53:03,739 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 547 predicate places. [2022-11-18 18:53:03,739 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 507 transitions, 6197 flow [2022-11-18 18:53:03,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:53:03,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:53:03,740 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:03,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-18 18:53:03,740 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:53:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:03,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1408734073, now seen corresponding path program 17 times [2022-11-18 18:53:03,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:53:03,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426724850] [2022-11-18 18:53:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:03,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:53:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:53:04,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:53:04,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426724850] [2022-11-18 18:53:04,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426724850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:04,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:04,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 18:53:04,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950858386] [2022-11-18 18:53:04,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:04,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:53:04,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:53:04,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:53:04,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:53:04,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-18 18:53:04,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 507 transitions, 6197 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:53:04,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:53:04,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-18 18:53:04,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:53:21,525 INFO L130 PetriNetUnfolder]: 2740/9451 cut-off events. [2022-11-18 18:53:21,525 INFO L131 PetriNetUnfolder]: For 415053/415105 co-relation queries the response was YES. [2022-11-18 18:53:22,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67246 conditions, 9451 events. 2740/9451 cut-off events. For 415053/415105 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 96114 event pairs, 635 based on Foata normal form. 16/9058 useless extension candidates. Maximal degree in co-relation 66939. Up to 3744 conditions per place. [2022-11-18 18:53:22,217 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 624 selfloop transitions, 75 changer transitions 112/903 dead transitions. [2022-11-18 18:53:22,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 903 transitions, 15087 flow [2022-11-18 18:53:22,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 18:53:22,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-18 18:53:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 6402 transitions. [2022-11-18 18:53:22,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.622036533229693 [2022-11-18 18:53:22,229 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 6402 transitions. [2022-11-18 18:53:22,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 6402 transitions. [2022-11-18 18:53:22,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:53:22,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 6402 transitions. [2022-11-18 18:53:22,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 103.25806451612904) internal successors, (6402), 62 states have internal predecessors, (6402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:53:22,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:53:22,254 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:53:22,254 INFO L175 Difference]: Start difference. First operand has 698 places, 507 transitions, 6197 flow. Second operand 62 states and 6402 transitions. [2022-11-18 18:53:22,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 723 places, 903 transitions, 15087 flow