./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix023_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix023_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:50:46,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:50:46,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:50:46,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:50:46,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:50:46,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:50:46,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:50:46,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:50:46,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:50:46,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:50:46,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:50:46,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:50:46,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:50:46,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:50:46,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:50:46,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:50:46,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:50:46,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:50:46,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:50:46,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:50:46,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:50:46,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:50:46,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:50:46,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:50:46,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:50:46,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:50:46,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:50:46,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:50:46,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:50:46,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:50:46,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:50:46,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:50:46,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:50:46,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:50:46,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:50:46,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:50:46,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:50:46,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:50:46,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:50:46,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:50:46,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:50:46,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:50:46,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:50:46,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:50:46,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:50:46,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:50:46,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:50:46,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:50:46,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:50:46,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:50:46,504 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:50:46,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:50:46,505 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:50:46,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:50:46,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:50:46,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:50:46,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:50:46,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:50:46,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:50:46,507 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:50:46,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:50:46,507 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:50:46,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:50:46,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:50:46,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:50:46,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:50:46,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:50:46,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:50:46,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:50:46,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:50:46,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:50:46,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:50:46,511 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:50:46,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:50:46,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:50:46,512 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_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 [2022-11-02 20:50:46,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:50:46,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:50:46,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:50:46,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:50:46,784 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:50:46,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/mix023_tso.i [2022-11-02 20:50:46,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/data/09ad34908/44435a1426ca43caadf891b002101790/FLAG36e402c1a [2022-11-02 20:50:47,461 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:50:47,478 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/sv-benchmarks/c/pthread-wmm/mix023_tso.i [2022-11-02 20:50:47,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/data/09ad34908/44435a1426ca43caadf891b002101790/FLAG36e402c1a [2022-11-02 20:50:47,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/data/09ad34908/44435a1426ca43caadf891b002101790 [2022-11-02 20:50:47,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:50:47,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:50:47,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:50:47,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:50:47,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:50:47,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:50:47" (1/1) ... [2022-11-02 20:50:47,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c80180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:47, skipping insertion in model container [2022-11-02 20:50:47,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:50:47" (1/1) ... [2022-11-02 20:50:47,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:50:47,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:50:48,004 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/sv-benchmarks/c/pthread-wmm/mix023_tso.i[944,957] [2022-11-02 20:50:48,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:50:48,398 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:50:48,415 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/sv-benchmarks/c/pthread-wmm/mix023_tso.i[944,957] [2022-11-02 20:50:48,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:50:48,527 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:50:48,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48 WrapperNode [2022-11-02 20:50:48,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:50:48,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:48,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:50:48,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:50:48,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,638 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 730 [2022-11-02 20:50:48,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:48,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:50:48,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:50:48,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:50:48,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,675 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:50:48,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:50:48,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:50:48,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:50:48,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:50:48,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:48,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:50:48,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3683c450-a77c-44a9-bc77-7c03fb3fe63c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:50:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:50:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:50:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:50:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:50:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:50:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:50:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:50:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:50:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:50:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:50:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:50:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-02 20:50:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-02 20:50:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:50:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:50:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:50:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:50:48,808 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:50:49,081 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:50:49,084 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:50:50,497 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:50:51,681 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:50:51,682 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:50:51,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:50:51 BoogieIcfgContainer [2022-11-02 20:50:51,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:50:51,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:50:51,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:50:51,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:50:51,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:50:47" (1/3) ... [2022-11-02 20:50:51,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbe19a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:50:51, skipping insertion in model container [2022-11-02 20:50:51,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (2/3) ... [2022-11-02 20:50:51,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbe19a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:50:51, skipping insertion in model container [2022-11-02 20:50:51,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:50:51" (3/3) ... [2022-11-02 20:50:51,693 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_tso.i [2022-11-02 20:50:51,701 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:50:51,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:50:51,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-02 20:50:51,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:50:51,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:50:51,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 158 transitions, 336 flow [2022-11-02 20:50:51,992 INFO L130 PetriNetUnfolder]: 2/154 cut-off events. [2022-11-02 20:50:51,992 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:50:51,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 154 events. 2/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-11-02 20:50:51,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 158 transitions, 336 flow [2022-11-02 20:50:52,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 154 transitions, 320 flow [2022-11-02 20:50:52,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:50:52,019 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;@676098ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:50:52,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 20:50:52,038 INFO L130 PetriNetUnfolder]: 0/84 cut-off events. [2022-11-02 20:50:52,038 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:50:52,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:52,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:52,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:50:52,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:52,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1862256623, now seen corresponding path program 1 times [2022-11-02 20:50:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:52,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478449636] [2022-11-02 20:50:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:52,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:52,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478449636] [2022-11-02 20:50:52,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478449636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:52,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:52,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:50:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526960906] [2022-11-02 20:50:52,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:52,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:52,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:52,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:52,758 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 158 [2022-11-02 20:50:52,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 154 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:52,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:52,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 158 [2022-11-02 20:50:52,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:54,263 INFO L130 PetriNetUnfolder]: 572/2892 cut-off events. [2022-11-02 20:50:54,263 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-02 20:50:54,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3791 conditions, 2892 events. 572/2892 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 27221 event pairs, 409 based on Foata normal form. 101/2774 useless extension candidates. Maximal degree in co-relation 3715. Up to 676 conditions per place. [2022-11-02 20:50:54,299 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 24 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2022-11-02 20:50:54,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 390 flow [2022-11-02 20:50:54,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2022-11-02 20:50:54,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9388185654008439 [2022-11-02 20:50:54,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2022-11-02 20:50:54,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2022-11-02 20:50:54,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:54,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2022-11-02 20:50:54,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,348 INFO L175 Difference]: Start difference. First operand has 165 places, 154 transitions, 320 flow. Second operand 3 states and 445 transitions. [2022-11-02 20:50:54,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 390 flow [2022-11-02 20:50:54,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 384 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:50:54,362 INFO L231 Difference]: Finished difference. Result has 161 places, 150 transitions, 312 flow [2022-11-02 20:50:54,365 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=161, PETRI_TRANSITIONS=150} [2022-11-02 20:50:54,369 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, -4 predicate places. [2022-11-02 20:50:54,369 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 150 transitions, 312 flow [2022-11-02 20:50:54,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:54,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:54,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:50:54,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:50:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1337573504, now seen corresponding path program 1 times [2022-11-02 20:50:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:54,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800504443] [2022-11-02 20:50:54,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:54,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:54,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:54,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800504443] [2022-11-02 20:50:54,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800504443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:54,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:54,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:50:54,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709298908] [2022-11-02 20:50:54,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:54,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:54,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:54,749 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 158 [2022-11-02 20:50:54,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 150 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:54,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 158 [2022-11-02 20:50:54,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:55,835 INFO L130 PetriNetUnfolder]: 456/2295 cut-off events. [2022-11-02 20:50:55,836 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-02 20:50:55,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 2295 events. 456/2295 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 20442 event pairs, 172 based on Foata normal form. 0/2181 useless extension candidates. Maximal degree in co-relation 3008. Up to 493 conditions per place. [2022-11-02 20:50:55,855 INFO L137 encePairwiseOnDemand]: 155/158 looper letters, 20 selfloop transitions, 2 changer transitions 0/156 dead transitions. [2022-11-02 20:50:55,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 156 transitions, 370 flow [2022-11-02 20:50:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2022-11-02 20:50:55,858 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9219409282700421 [2022-11-02 20:50:55,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2022-11-02 20:50:55,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2022-11-02 20:50:55,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:55,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2022-11-02 20:50:55,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,864 INFO L175 Difference]: Start difference. First operand has 161 places, 150 transitions, 312 flow. Second operand 3 states and 437 transitions. [2022-11-02 20:50:55,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 156 transitions, 370 flow [2022-11-02 20:50:55,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 156 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:50:55,871 INFO L231 Difference]: Finished difference. Result has 160 places, 149 transitions, 310 flow [2022-11-02 20:50:55,872 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=160, PETRI_TRANSITIONS=149} [2022-11-02 20:50:55,873 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, -5 predicate places. [2022-11-02 20:50:55,874 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 149 transitions, 310 flow [2022-11-02 20:50:55,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:55,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:55,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:50:55,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:50:55,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash 198422858, now seen corresponding path program 1 times [2022-11-02 20:50:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:55,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688717695] [2022-11-02 20:50:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:57,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:57,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688717695] [2022-11-02 20:50:57,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688717695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:57,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:57,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:50:57,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061249343] [2022-11-02 20:50:57,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:57,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:50:57,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:50:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:50:57,327 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 158 [2022-11-02 20:50:57,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 149 transitions, 310 flow. Second operand has 11 states, 11 states have (on average 128.45454545454547) internal successors, (1413), 11 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:57,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:57,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 158 [2022-11-02 20:50:57,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:00,946 INFO L130 PetriNetUnfolder]: 3072/7530 cut-off events. [2022-11-02 20:51:00,947 INFO L131 PetriNetUnfolder]: For 264/264 co-relation queries the response was YES. [2022-11-02 20:51:00,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12188 conditions, 7530 events. 3072/7530 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 69638 event pairs, 706 based on Foata normal form. 0/7332 useless extension candidates. Maximal degree in co-relation 12109. Up to 2540 conditions per place. [2022-11-02 20:51:00,997 INFO L137 encePairwiseOnDemand]: 145/158 looper letters, 30 selfloop transitions, 11 changer transitions 90/241 dead transitions. [2022-11-02 20:51:00,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 241 transitions, 746 flow [2022-11-02 20:51:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:51:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 20:51:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2153 transitions. [2022-11-02 20:51:01,003 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8516613924050633 [2022-11-02 20:51:01,003 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2153 transitions. [2022-11-02 20:51:01,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2153 transitions. [2022-11-02 20:51:01,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:01,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2153 transitions. [2022-11-02 20:51:01,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 134.5625) internal successors, (2153), 16 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 158.0) internal successors, (2686), 17 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,017 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 158.0) internal successors, (2686), 17 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,017 INFO L175 Difference]: Start difference. First operand has 160 places, 149 transitions, 310 flow. Second operand 16 states and 2153 transitions. [2022-11-02 20:51:01,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 241 transitions, 746 flow [2022-11-02 20:51:01,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 241 transitions, 728 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:51:01,024 INFO L231 Difference]: Finished difference. Result has 184 places, 141 transitions, 364 flow [2022-11-02 20:51:01,024 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=364, PETRI_PLACES=184, PETRI_TRANSITIONS=141} [2022-11-02 20:51:01,025 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 19 predicate places. [2022-11-02 20:51:01,025 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 141 transitions, 364 flow [2022-11-02 20:51:01,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.45454545454547) internal successors, (1413), 11 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:01,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:01,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:51:01,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:01,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1371618700, now seen corresponding path program 1 times [2022-11-02 20:51:01,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:01,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137448337] [2022-11-02 20:51:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:01,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:01,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:01,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137448337] [2022-11-02 20:51:01,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137448337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:01,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:01,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:51:01,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123447976] [2022-11-02 20:51:01,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:01,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:01,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:01,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:01,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:01,472 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 158 [2022-11-02 20:51:01,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 141 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:01,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 158 [2022-11-02 20:51:01,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:03,629 INFO L130 PetriNetUnfolder]: 1652/3392 cut-off events. [2022-11-02 20:51:03,630 INFO L131 PetriNetUnfolder]: For 4932/5328 co-relation queries the response was YES. [2022-11-02 20:51:03,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8513 conditions, 3392 events. 1652/3392 cut-off events. For 4932/5328 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 25683 event pairs, 276 based on Foata normal form. 88/3427 useless extension candidates. Maximal degree in co-relation 8422. Up to 1009 conditions per place. [2022-11-02 20:51:03,666 INFO L137 encePairwiseOnDemand]: 152/158 looper letters, 59 selfloop transitions, 11 changer transitions 12/199 dead transitions. [2022-11-02 20:51:03,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 199 transitions, 803 flow [2022-11-02 20:51:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:51:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:51:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1264 transitions. [2022-11-02 20:51:03,670 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-02 20:51:03,670 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1264 transitions. [2022-11-02 20:51:03,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1264 transitions. [2022-11-02 20:51:03,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:03,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1264 transitions. [2022-11-02 20:51:03,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.44444444444446) internal successors, (1264), 9 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:03,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:03,680 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:03,681 INFO L175 Difference]: Start difference. First operand has 184 places, 141 transitions, 364 flow. Second operand 9 states and 1264 transitions. [2022-11-02 20:51:03,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 199 transitions, 803 flow [2022-11-02 20:51:03,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 199 transitions, 783 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-02 20:51:03,706 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 435 flow [2022-11-02 20:51:03,706 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=435, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2022-11-02 20:51:03,708 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 1 predicate places. [2022-11-02 20:51:03,708 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 435 flow [2022-11-02 20:51:03,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:03,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:03,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:03,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:51:03,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2056179783, now seen corresponding path program 1 times [2022-11-02 20:51:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:03,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396884800] [2022-11-02 20:51:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:03,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:05,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:05,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396884800] [2022-11-02 20:51:05,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396884800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:05,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:05,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:51:05,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789999947] [2022-11-02 20:51:05,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:05,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:51:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:05,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:51:05,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:51:05,378 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 158 [2022-11-02 20:51:05,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 435 flow. Second operand has 10 states, 10 states have (on average 128.9) internal successors, (1289), 10 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:05,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:05,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 158 [2022-11-02 20:51:05,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:07,995 INFO L130 PetriNetUnfolder]: 2716/5274 cut-off events. [2022-11-02 20:51:07,995 INFO L131 PetriNetUnfolder]: For 7274/7719 co-relation queries the response was YES. [2022-11-02 20:51:08,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13673 conditions, 5274 events. 2716/5274 cut-off events. For 7274/7719 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 41800 event pairs, 826 based on Foata normal form. 39/5203 useless extension candidates. Maximal degree in co-relation 13579. Up to 2362 conditions per place. [2022-11-02 20:51:08,034 INFO L137 encePairwiseOnDemand]: 146/158 looper letters, 31 selfloop transitions, 11 changer transitions 68/220 dead transitions. [2022-11-02 20:51:08,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 220 transitions, 980 flow [2022-11-02 20:51:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:51:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:51:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1869 transitions. [2022-11-02 20:51:08,039 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8449367088607594 [2022-11-02 20:51:08,039 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1869 transitions. [2022-11-02 20:51:08,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1869 transitions. [2022-11-02 20:51:08,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:08,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1869 transitions. [2022-11-02 20:51:08,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 133.5) internal successors, (1869), 14 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) [2022-11-02 20:51:08,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 158.0) internal successors, (2370), 15 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) [2022-11-02 20:51:08,049 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 158.0) internal successors, (2370), 15 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) [2022-11-02 20:51:08,050 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 435 flow. Second operand 14 states and 1869 transitions. [2022-11-02 20:51:08,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 220 transitions, 980 flow [2022-11-02 20:51:08,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 220 transitions, 980 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:51:08,072 INFO L231 Difference]: Finished difference. Result has 186 places, 142 transitions, 434 flow [2022-11-02 20:51:08,072 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=434, PETRI_PLACES=186, PETRI_TRANSITIONS=142} [2022-11-02 20:51:08,073 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 21 predicate places. [2022-11-02 20:51:08,073 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 142 transitions, 434 flow [2022-11-02 20:51:08,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.9) internal successors, (1289), 10 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:08,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:08,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:51:08,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:08,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:08,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1366707189, now seen corresponding path program 1 times [2022-11-02 20:51:08,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:08,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298192046] [2022-11-02 20:51:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:08,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:09,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298192046] [2022-11-02 20:51:09,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298192046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:09,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:09,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:51:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329602522] [2022-11-02 20:51:09,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:09,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:51:09,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:51:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:51:09,639 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2022-11-02 20:51:09,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 142 transitions, 434 flow. Second operand has 12 states, 12 states have (on average 127.66666666666667) internal successors, (1532), 12 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:09,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2022-11-02 20:51:09,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:11,745 INFO L130 PetriNetUnfolder]: 1116/2244 cut-off events. [2022-11-02 20:51:11,745 INFO L131 PetriNetUnfolder]: For 7174/7627 co-relation queries the response was YES. [2022-11-02 20:51:11,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 2244 events. 1116/2244 cut-off events. For 7174/7627 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14471 event pairs, 166 based on Foata normal form. 33/2191 useless extension candidates. Maximal degree in co-relation 6863. Up to 1039 conditions per place. [2022-11-02 20:51:11,764 INFO L137 encePairwiseOnDemand]: 146/158 looper letters, 42 selfloop transitions, 10 changer transitions 47/208 dead transitions. [2022-11-02 20:51:11,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 208 transitions, 963 flow [2022-11-02 20:51:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:51:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:51:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2365 transitions. [2022-11-02 20:51:11,771 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8315752461322081 [2022-11-02 20:51:11,772 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2365 transitions. [2022-11-02 20:51:11,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2365 transitions. [2022-11-02 20:51:11,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:11,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2365 transitions. [2022-11-02 20:51:11,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 131.38888888888889) internal successors, (2365), 18 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:11,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 158.0) internal successors, (3002), 19 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:11,789 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 158.0) internal successors, (3002), 19 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:11,789 INFO L175 Difference]: Start difference. First operand has 186 places, 142 transitions, 434 flow. Second operand 18 states and 2365 transitions. [2022-11-02 20:51:11,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 208 transitions, 963 flow [2022-11-02 20:51:11,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 208 transitions, 876 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-11-02 20:51:11,810 INFO L231 Difference]: Finished difference. Result has 189 places, 144 transitions, 456 flow [2022-11-02 20:51:11,811 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=456, PETRI_PLACES=189, PETRI_TRANSITIONS=144} [2022-11-02 20:51:11,812 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 24 predicate places. [2022-11-02 20:51:11,812 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 144 transitions, 456 flow [2022-11-02 20:51:11,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 127.66666666666667) internal successors, (1532), 12 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:11,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:11,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:11,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:51:11,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:11,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:11,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1494514200, now seen corresponding path program 1 times [2022-11-02 20:51:11,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:11,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137111984] [2022-11-02 20:51:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:11,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:12,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:12,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137111984] [2022-11-02 20:51:12,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137111984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:12,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:12,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:51:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382728385] [2022-11-02 20:51:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:12,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:12,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:12,431 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 158 [2022-11-02 20:51:12,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 144 transitions, 456 flow. Second operand has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:12,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:12,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 158 [2022-11-02 20:51:12,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:17,022 INFO L130 PetriNetUnfolder]: 8272/13756 cut-off events. [2022-11-02 20:51:17,023 INFO L131 PetriNetUnfolder]: For 40383/40539 co-relation queries the response was YES. [2022-11-02 20:51:17,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40026 conditions, 13756 events. 8272/13756 cut-off events. For 40383/40539 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 104912 event pairs, 363 based on Foata normal form. 156/13680 useless extension candidates. Maximal degree in co-relation 39919. Up to 4491 conditions per place. [2022-11-02 20:51:17,185 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 70 selfloop transitions, 8 changer transitions 78/268 dead transitions. [2022-11-02 20:51:17,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 268 transitions, 1442 flow [2022-11-02 20:51:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:51:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:51:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1394 transitions. [2022-11-02 20:51:17,191 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8822784810126583 [2022-11-02 20:51:17,191 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1394 transitions. [2022-11-02 20:51:17,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1394 transitions. [2022-11-02 20:51:17,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:17,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1394 transitions. [2022-11-02 20:51:17,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 139.4) internal successors, (1394), 10 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:17,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 158.0) internal successors, (1738), 11 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:17,201 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 158.0) internal successors, (1738), 11 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:17,201 INFO L175 Difference]: Start difference. First operand has 189 places, 144 transitions, 456 flow. Second operand 10 states and 1394 transitions. [2022-11-02 20:51:17,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 268 transitions, 1442 flow [2022-11-02 20:51:17,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 268 transitions, 1231 flow, removed 84 selfloop flow, removed 18 redundant places. [2022-11-02 20:51:17,264 INFO L231 Difference]: Finished difference. Result has 177 places, 149 transitions, 473 flow [2022-11-02 20:51:17,265 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=473, PETRI_PLACES=177, PETRI_TRANSITIONS=149} [2022-11-02 20:51:17,265 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 12 predicate places. [2022-11-02 20:51:17,266 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 149 transitions, 473 flow [2022-11-02 20:51:17,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:17,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:17,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:17,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:51:17,267 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1077525917, now seen corresponding path program 1 times [2022-11-02 20:51:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:17,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611610707] [2022-11-02 20:51:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:17,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:17,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611610707] [2022-11-02 20:51:17,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611610707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:17,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:17,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:51:17,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464605158] [2022-11-02 20:51:17,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:17,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:51:17,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:17,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:51:17,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:51:17,794 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 158 [2022-11-02 20:51:17,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 149 transitions, 473 flow. Second operand has 7 states, 7 states have (on average 129.71428571428572) internal successors, (908), 7 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:17,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:17,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 158 [2022-11-02 20:51:17,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:21,188 INFO L130 PetriNetUnfolder]: 4597/8718 cut-off events. [2022-11-02 20:51:21,189 INFO L131 PetriNetUnfolder]: For 19404/19567 co-relation queries the response was YES. [2022-11-02 20:51:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28085 conditions, 8718 events. 4597/8718 cut-off events. For 19404/19567 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 71032 event pairs, 335 based on Foata normal form. 282/8961 useless extension candidates. Maximal degree in co-relation 27987. Up to 2055 conditions per place. [2022-11-02 20:51:21,296 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 123 selfloop transitions, 22 changer transitions 30/287 dead transitions. [2022-11-02 20:51:21,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 287 transitions, 1604 flow [2022-11-02 20:51:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:51:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:51:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1536 transitions. [2022-11-02 20:51:21,303 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8837744533947065 [2022-11-02 20:51:21,303 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1536 transitions. [2022-11-02 20:51:21,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1536 transitions. [2022-11-02 20:51:21,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:21,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1536 transitions. [2022-11-02 20:51:21,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 139.63636363636363) internal successors, (1536), 11 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:21,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 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) [2022-11-02 20:51:21,317 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 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) [2022-11-02 20:51:21,318 INFO L175 Difference]: Start difference. First operand has 177 places, 149 transitions, 473 flow. Second operand 11 states and 1536 transitions. [2022-11-02 20:51:21,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 287 transitions, 1604 flow [2022-11-02 20:51:21,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 287 transitions, 1588 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-02 20:51:21,376 INFO L231 Difference]: Finished difference. Result has 185 places, 165 transitions, 682 flow [2022-11-02 20:51:21,376 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=682, PETRI_PLACES=185, PETRI_TRANSITIONS=165} [2022-11-02 20:51:21,381 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 20 predicate places. [2022-11-02 20:51:21,381 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 165 transitions, 682 flow [2022-11-02 20:51:21,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.71428571428572) internal successors, (908), 7 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:21,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:21,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:21,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:51:21,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:21,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:21,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1499773032, now seen corresponding path program 1 times [2022-11-02 20:51:21,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:21,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082084179] [2022-11-02 20:51:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:21,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:22,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:22,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082084179] [2022-11-02 20:51:22,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082084179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:22,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:22,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:51:22,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003378934] [2022-11-02 20:51:22,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:22,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:51:22,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:51:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:51:22,236 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 158 [2022-11-02 20:51:22,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 165 transitions, 682 flow. Second operand has 8 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:22,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:22,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 158 [2022-11-02 20:51:22,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:25,284 INFO L130 PetriNetUnfolder]: 4156/8083 cut-off events. [2022-11-02 20:51:25,284 INFO L131 PetriNetUnfolder]: For 27945/28226 co-relation queries the response was YES. [2022-11-02 20:51:25,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29732 conditions, 8083 events. 4156/8083 cut-off events. For 27945/28226 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 67658 event pairs, 332 based on Foata normal form. 219/8263 useless extension candidates. Maximal degree in co-relation 29629. Up to 1853 conditions per place. [2022-11-02 20:51:25,375 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 115 selfloop transitions, 38 changer transitions 58/322 dead transitions. [2022-11-02 20:51:25,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 322 transitions, 2140 flow [2022-11-02 20:51:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:51:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:51:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1957 transitions. [2022-11-02 20:51:25,382 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8847197106690777 [2022-11-02 20:51:25,382 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1957 transitions. [2022-11-02 20:51:25,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1957 transitions. [2022-11-02 20:51:25,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:25,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1957 transitions. [2022-11-02 20:51:25,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 139.78571428571428) internal successors, (1957), 14 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:25,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 158.0) internal successors, (2370), 15 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) [2022-11-02 20:51:25,397 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 158.0) internal successors, (2370), 15 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) [2022-11-02 20:51:25,398 INFO L175 Difference]: Start difference. First operand has 185 places, 165 transitions, 682 flow. Second operand 14 states and 1957 transitions. [2022-11-02 20:51:25,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 322 transitions, 2140 flow [2022-11-02 20:51:25,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 322 transitions, 2035 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-11-02 20:51:25,813 INFO L231 Difference]: Finished difference. Result has 200 places, 183 transitions, 967 flow [2022-11-02 20:51:25,813 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=967, PETRI_PLACES=200, PETRI_TRANSITIONS=183} [2022-11-02 20:51:25,815 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 35 predicate places. [2022-11-02 20:51:25,815 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 183 transitions, 967 flow [2022-11-02 20:51:25,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:25,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:25,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:25,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:51:25,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:25,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:25,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1737483401, now seen corresponding path program 1 times [2022-11-02 20:51:25,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:25,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988610336] [2022-11-02 20:51:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:26,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:26,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988610336] [2022-11-02 20:51:26,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988610336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:26,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:26,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:51:26,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475230435] [2022-11-02 20:51:26,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:26,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:51:26,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:51:26,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:51:26,535 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 158 [2022-11-02 20:51:26,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 183 transitions, 967 flow. Second operand has 7 states, 7 states have (on average 132.14285714285714) internal successors, (925), 7 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:26,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:26,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 158 [2022-11-02 20:51:26,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:27,957 INFO L130 PetriNetUnfolder]: 1418/5572 cut-off events. [2022-11-02 20:51:27,957 INFO L131 PetriNetUnfolder]: For 22178/23410 co-relation queries the response was YES. [2022-11-02 20:51:28,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19278 conditions, 5572 events. 1418/5572 cut-off events. For 22178/23410 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 65195 event pairs, 58 based on Foata normal form. 31/5272 useless extension candidates. Maximal degree in co-relation 19169. Up to 1140 conditions per place. [2022-11-02 20:51:28,044 INFO L137 encePairwiseOnDemand]: 152/158 looper letters, 57 selfloop transitions, 2 changer transitions 16/231 dead transitions. [2022-11-02 20:51:28,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 231 transitions, 1343 flow [2022-11-02 20:51:28,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:51:28,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:51:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 971 transitions. [2022-11-02 20:51:28,049 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8779385171790235 [2022-11-02 20:51:28,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 971 transitions. [2022-11-02 20:51:28,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 971 transitions. [2022-11-02 20:51:28,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:28,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 971 transitions. [2022-11-02 20:51:28,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.71428571428572) internal successors, (971), 7 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:28,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:28,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:28,058 INFO L175 Difference]: Start difference. First operand has 200 places, 183 transitions, 967 flow. Second operand 7 states and 971 transitions. [2022-11-02 20:51:28,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 231 transitions, 1343 flow [2022-11-02 20:51:28,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 231 transitions, 1170 flow, removed 74 selfloop flow, removed 6 redundant places. [2022-11-02 20:51:28,648 INFO L231 Difference]: Finished difference. Result has 205 places, 184 transitions, 813 flow [2022-11-02 20:51:28,649 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=813, PETRI_PLACES=205, PETRI_TRANSITIONS=184} [2022-11-02 20:51:28,649 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 40 predicate places. [2022-11-02 20:51:28,650 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 184 transitions, 813 flow [2022-11-02 20:51:28,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.14285714285714) internal successors, (925), 7 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:28,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:28,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:28,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:51:28,651 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1913300165, now seen corresponding path program 2 times [2022-11-02 20:51:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:28,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559391965] [2022-11-02 20:51:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:31,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559391965] [2022-11-02 20:51:31,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559391965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:31,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:31,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:51:31,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883784393] [2022-11-02 20:51:31,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:31,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:51:31,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:51:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:51:31,033 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 158 [2022-11-02 20:51:31,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 184 transitions, 813 flow. Second operand has 15 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) [2022-11-02 20:51:31,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:31,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 158 [2022-11-02 20:51:31,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:35,231 INFO L130 PetriNetUnfolder]: 3359/12459 cut-off events. [2022-11-02 20:51:35,231 INFO L131 PetriNetUnfolder]: For 24102/25451 co-relation queries the response was YES. [2022-11-02 20:51:35,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36444 conditions, 12459 events. 3359/12459 cut-off events. For 24102/25451 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 167891 event pairs, 90 based on Foata normal form. 29/11706 useless extension candidates. Maximal degree in co-relation 36326. Up to 1584 conditions per place. [2022-11-02 20:51:35,432 INFO L137 encePairwiseOnDemand]: 138/158 looper letters, 87 selfloop transitions, 62 changer transitions 33/331 dead transitions. [2022-11-02 20:51:35,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 331 transitions, 1964 flow [2022-11-02 20:51:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:51:35,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 20:51:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3484 transitions. [2022-11-02 20:51:35,439 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8166901078293484 [2022-11-02 20:51:35,439 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3484 transitions. [2022-11-02 20:51:35,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3484 transitions. [2022-11-02 20:51:35,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:35,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3484 transitions. [2022-11-02 20:51:35,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 129.03703703703704) internal successors, (3484), 27 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:35,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 158.0) internal successors, (4424), 28 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:35,456 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 158.0) internal successors, (4424), 28 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:35,456 INFO L175 Difference]: Start difference. First operand has 205 places, 184 transitions, 813 flow. Second operand 27 states and 3484 transitions. [2022-11-02 20:51:35,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 331 transitions, 1964 flow [2022-11-02 20:51:36,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 331 transitions, 1927 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-02 20:51:36,233 INFO L231 Difference]: Finished difference. Result has 240 places, 245 transitions, 1357 flow [2022-11-02 20:51:36,233 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1357, PETRI_PLACES=240, PETRI_TRANSITIONS=245} [2022-11-02 20:51:36,234 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 75 predicate places. [2022-11-02 20:51:36,234 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 245 transitions, 1357 flow [2022-11-02 20:51:36,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 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) [2022-11-02 20:51:36,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:36,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:36,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:51:36,236 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:36,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1087636263, now seen corresponding path program 3 times [2022-11-02 20:51:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:36,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043865349] [2022-11-02 20:51:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:38,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:38,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043865349] [2022-11-02 20:51:38,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043865349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:38,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:38,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:51:38,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058458808] [2022-11-02 20:51:38,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:38,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:51:38,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:51:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:51:38,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 158 [2022-11-02 20:51:38,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 245 transitions, 1357 flow. Second operand has 14 states, 14 states have (on average 125.92857142857143) internal successors, (1763), 14 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:38,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:38,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 158 [2022-11-02 20:51:38,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:42,958 INFO L130 PetriNetUnfolder]: 4604/17590 cut-off events. [2022-11-02 20:51:42,958 INFO L131 PetriNetUnfolder]: For 45560/47510 co-relation queries the response was YES. [2022-11-02 20:51:43,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55803 conditions, 17590 events. 4604/17590 cut-off events. For 45560/47510 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 253405 event pairs, 87 based on Foata normal form. 67/16569 useless extension candidates. Maximal degree in co-relation 55666. Up to 2317 conditions per place. [2022-11-02 20:51:43,282 INFO L137 encePairwiseOnDemand]: 144/158 looper letters, 91 selfloop transitions, 42 changer transitions 28/322 dead transitions. [2022-11-02 20:51:43,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 322 transitions, 2386 flow [2022-11-02 20:51:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:51:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:51:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1940 transitions. [2022-11-02 20:51:43,286 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8185654008438819 [2022-11-02 20:51:43,286 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1940 transitions. [2022-11-02 20:51:43,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1940 transitions. [2022-11-02 20:51:43,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:43,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1940 transitions. [2022-11-02 20:51:43,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 129.33333333333334) internal successors, (1940), 15 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:43,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 158.0) internal successors, (2528), 16 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:43,296 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 158.0) internal successors, (2528), 16 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:43,296 INFO L175 Difference]: Start difference. First operand has 240 places, 245 transitions, 1357 flow. Second operand 15 states and 1940 transitions. [2022-11-02 20:51:43,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 322 transitions, 2386 flow [2022-11-02 20:51:45,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 322 transitions, 2315 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-11-02 20:51:45,022 INFO L231 Difference]: Finished difference. Result has 244 places, 267 transitions, 1659 flow [2022-11-02 20:51:45,022 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1659, PETRI_PLACES=244, PETRI_TRANSITIONS=267} [2022-11-02 20:51:45,023 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 79 predicate places. [2022-11-02 20:51:45,023 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 267 transitions, 1659 flow [2022-11-02 20:51:45,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 125.92857142857143) internal successors, (1763), 14 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:45,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:45,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:45,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:51:45,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:51:45,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1030634921, now seen corresponding path program 4 times [2022-11-02 20:51:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:45,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621698524] [2022-11-02 20:51:45,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:45,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:45,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:45,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621698524] [2022-11-02 20:51:45,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621698524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:45,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:45,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:51:45,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851757810] [2022-11-02 20:51:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:45,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:51:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:51:45,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:51:45,776 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 158 [2022-11-02 20:51:45,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 267 transitions, 1659 flow. Second operand has 9 states, 9 states have (on average 129.55555555555554) internal successors, (1166), 9 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:45,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:45,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 158 [2022-11-02 20:51:45,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:03,257 INFO L130 PetriNetUnfolder]: 23768/48049 cut-off events. [2022-11-02 20:52:03,257 INFO L131 PetriNetUnfolder]: For 396797/399424 co-relation queries the response was YES. [2022-11-02 20:52:03,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223334 conditions, 48049 events. 23768/48049 cut-off events. For 396797/399424 co-relation queries the response was YES. Maximal size of possible extension queue 2998. Compared 540652 event pairs, 759 based on Foata normal form. 1577/49084 useless extension candidates. Maximal degree in co-relation 223270. Up to 8361 conditions per place. [2022-11-02 20:52:03,893 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 226 selfloop transitions, 43 changer transitions 240/635 dead transitions. [2022-11-02 20:52:03,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 635 transitions, 6130 flow [2022-11-02 20:52:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:52:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:52:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2317 transitions. [2022-11-02 20:52:03,898 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.862620997766195 [2022-11-02 20:52:03,899 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2317 transitions. [2022-11-02 20:52:03,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2317 transitions. [2022-11-02 20:52:03,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:03,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2317 transitions. [2022-11-02 20:52:03,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 136.2941176470588) internal successors, (2317), 17 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:03,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 158.0) internal successors, (2844), 18 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:03,911 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 158.0) internal successors, (2844), 18 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:03,911 INFO L175 Difference]: Start difference. First operand has 244 places, 267 transitions, 1659 flow. Second operand 17 states and 2317 transitions. [2022-11-02 20:52:03,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 635 transitions, 6130 flow [2022-11-02 20:52:10,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 635 transitions, 5422 flow, removed 276 selfloop flow, removed 19 redundant places. [2022-11-02 20:52:10,551 INFO L231 Difference]: Finished difference. Result has 242 places, 232 transitions, 1321 flow [2022-11-02 20:52:10,551 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1321, PETRI_PLACES=242, PETRI_TRANSITIONS=232} [2022-11-02 20:52:10,552 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 77 predicate places. [2022-11-02 20:52:10,553 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 232 transitions, 1321 flow [2022-11-02 20:52:10,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 129.55555555555554) internal successors, (1166), 9 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:10,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:10,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:10,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:52:10,554 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:52:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash 396220454, now seen corresponding path program 1 times [2022-11-02 20:52:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:10,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930465903] [2022-11-02 20:52:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:11,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:11,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930465903] [2022-11-02 20:52:11,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930465903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:11,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:11,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:52:11,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687204551] [2022-11-02 20:52:11,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:11,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:52:11,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:11,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:52:11,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:52:11,402 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 158 [2022-11-02 20:52:11,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 232 transitions, 1321 flow. Second operand has 7 states, 7 states have (on average 132.28571428571428) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:11,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:11,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 158 [2022-11-02 20:52:11,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:18,043 INFO L130 PetriNetUnfolder]: 7364/26838 cut-off events. [2022-11-02 20:52:18,043 INFO L131 PetriNetUnfolder]: For 91678/96807 co-relation queries the response was YES. [2022-11-02 20:52:18,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96850 conditions, 26838 events. 7364/26838 cut-off events. For 91678/96807 co-relation queries the response was YES. Maximal size of possible extension queue 3248. Compared 414278 event pairs, 168 based on Foata normal form. 115/25222 useless extension candidates. Maximal degree in co-relation 96754. Up to 3400 conditions per place. [2022-11-02 20:52:18,428 INFO L137 encePairwiseOnDemand]: 152/158 looper letters, 118 selfloop transitions, 2 changer transitions 13/300 dead transitions. [2022-11-02 20:52:18,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 300 transitions, 2070 flow [2022-11-02 20:52:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:52:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:52:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 948 transitions. [2022-11-02 20:52:18,432 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-02 20:52:18,432 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 948 transitions. [2022-11-02 20:52:18,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 948 transitions. [2022-11-02 20:52:18,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:18,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 948 transitions. [2022-11-02 20:52:18,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.42857142857142) internal successors, (948), 7 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:18,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:18,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:18,438 INFO L175 Difference]: Start difference. First operand has 242 places, 232 transitions, 1321 flow. Second operand 7 states and 948 transitions. [2022-11-02 20:52:18,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 300 transitions, 2070 flow [2022-11-02 20:52:26,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 300 transitions, 1860 flow, removed 58 selfloop flow, removed 21 redundant places. [2022-11-02 20:52:26,272 INFO L231 Difference]: Finished difference. Result has 227 places, 229 transitions, 1127 flow [2022-11-02 20:52:26,273 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1127, PETRI_PLACES=227, PETRI_TRANSITIONS=229} [2022-11-02 20:52:26,273 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 62 predicate places. [2022-11-02 20:52:26,274 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 229 transitions, 1127 flow [2022-11-02 20:52:26,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.28571428571428) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:26,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:26,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:26,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:52:26,275 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:52:26,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1962078696, now seen corresponding path program 2 times [2022-11-02 20:52:26,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:26,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430251037] [2022-11-02 20:52:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:26,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:29,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:29,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430251037] [2022-11-02 20:52:29,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430251037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:29,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:29,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:52:29,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240685957] [2022-11-02 20:52:29,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:29,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:52:29,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:29,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:52:29,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:29,237 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2022-11-02 20:52:29,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 229 transitions, 1127 flow. Second operand has 11 states, 11 states have (on average 128.36363636363637) internal successors, (1412), 11 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:29,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:29,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2022-11-02 20:52:29,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:38,177 INFO L130 PetriNetUnfolder]: 10881/40720 cut-off events. [2022-11-02 20:52:38,177 INFO L131 PetriNetUnfolder]: For 61175/63799 co-relation queries the response was YES. [2022-11-02 20:52:38,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114813 conditions, 40720 events. 10881/40720 cut-off events. For 61175/63799 co-relation queries the response was YES. Maximal size of possible extension queue 5082. Compared 676655 event pairs, 292 based on Foata normal form. 85/38123 useless extension candidates. Maximal degree in co-relation 114770. Up to 4277 conditions per place. [2022-11-02 20:52:39,014 INFO L137 encePairwiseOnDemand]: 148/158 looper letters, 64 selfloop transitions, 13 changer transitions 39/272 dead transitions. [2022-11-02 20:52:39,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 272 transitions, 1661 flow [2022-11-02 20:52:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:52:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:52:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1179 transitions. [2022-11-02 20:52:39,017 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8291139240506329 [2022-11-02 20:52:39,017 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1179 transitions. [2022-11-02 20:52:39,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1179 transitions. [2022-11-02 20:52:39,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:39,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1179 transitions. [2022-11-02 20:52:39,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:39,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:39,023 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:39,023 INFO L175 Difference]: Start difference. First operand has 227 places, 229 transitions, 1127 flow. Second operand 9 states and 1179 transitions. [2022-11-02 20:52:39,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 272 transitions, 1661 flow [2022-11-02 20:52:51,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 272 transitions, 1637 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-02 20:52:51,372 INFO L231 Difference]: Finished difference. Result has 229 places, 218 transitions, 1071 flow [2022-11-02 20:52:51,372 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1071, PETRI_PLACES=229, PETRI_TRANSITIONS=218} [2022-11-02 20:52:51,373 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 64 predicate places. [2022-11-02 20:52:51,373 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 218 transitions, 1071 flow [2022-11-02 20:52:51,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.36363636363637) internal successors, (1412), 11 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:51,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:51,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:51,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:52:51,374 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 20:52:51,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:51,375 INFO L85 PathProgramCache]: Analyzing trace with hash -244625136, now seen corresponding path program 3 times [2022-11-02 20:52:51,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:51,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730920322] [2022-11-02 20:52:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:51,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:54,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:54,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730920322] [2022-11-02 20:52:54,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730920322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:54,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:54,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:52:54,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9629507] [2022-11-02 20:52:54,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:54,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:52:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:52:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:52:54,771 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 158 [2022-11-02 20:52:54,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 218 transitions, 1071 flow. Second operand has 15 states, 15 states have (on average 124.93333333333334) internal successors, (1874), 15 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:54,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:54,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 158 [2022-11-02 20:52:54,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand