./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:49:01,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:49:01,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:49:01,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:49:01,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:49:01,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:49:01,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:49:01,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:49:01,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:49:01,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:49:01,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:49:01,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:49:01,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:49:01,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:49:01,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:49:01,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:49:01,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:49:01,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:49:01,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:49:01,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:49:01,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:49:01,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:49:01,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:49:01,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:49:01,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:49:01,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:49:01,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:49:01,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:49:01,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:49:01,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:49:01,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:49:01,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:49:01,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:49:01,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:49:01,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:49:01,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:49:01,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:49:01,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:49:01,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:49:01,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:49:01,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:49:01,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:49:01,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:49:01,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:49:01,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:49:01,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:49:01,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:49:01,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:49:01,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:49:01,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:49:01,554 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:49:01,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:49:01,555 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:49:01,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:49:01,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:49:01,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:49:01,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:49:01,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:49:01,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:49:01,560 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:49:01,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:49:01,560 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:49:01,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:49:01,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:49:01,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:49:01,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:49:01,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:49:01,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:49:01,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:49:01,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:49:01,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:49:01,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:49:01,564 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:49:01,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:49:01,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:49:01,565 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_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 [2022-11-18 19:49:01,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:49:01,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:49:02,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:49:02,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:49:02,004 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:49:02,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-11-18 19:49:02,089 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/data/bb63a129c/77c6619149364c08bfdbce675d2201c0/FLAGde622d168 [2022-11-18 19:49:02,702 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:49:02,702 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-11-18 19:49:02,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/data/bb63a129c/77c6619149364c08bfdbce675d2201c0/FLAGde622d168 [2022-11-18 19:49:02,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/data/bb63a129c/77c6619149364c08bfdbce675d2201c0 [2022-11-18 19:49:02,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:49:02,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:49:02,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:49:02,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:49:02,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:49:02,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:49:02" (1/1) ... [2022-11-18 19:49:02,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4d4a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:02, skipping insertion in model container [2022-11-18 19:49:02,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:49:02" (1/1) ... [2022-11-18 19:49:03,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:49:03,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:49:03,263 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-11-18 19:49:03,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:49:03,593 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:49:03,608 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-11-18 19:49:03,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:49:03,741 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:49:03,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03 WrapperNode [2022-11-18 19:49:03,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:49:03,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:49:03,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:49:03,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:49:03,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,829 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2022-11-18 19:49:03,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:49:03,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:49:03,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:49:03,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:49:03,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,856 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:49:03,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:49:03,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:49:03,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:49:03,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (1/1) ... [2022-11-18 19:49:03,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:49:03,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:03,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:49:03,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e368ecd-e138-4466-a5b7-e2ea11966853/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:49:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:49:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:49:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:49:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:49:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:49:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 19:49:03,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 19:49:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 19:49:03,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 19:49:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-18 19:49:03,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-18 19:49:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-18 19:49:03,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-18 19:49:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:49:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:49:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:49:03,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:49:03,966 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:49:04,197 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:49:04,199 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:49:04,685 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:49:04,839 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:49:04,840 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:49:04,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:49:04 BoogieIcfgContainer [2022-11-18 19:49:04,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:49:04,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:49:04,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:49:04,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:49:04,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:49:02" (1/3) ... [2022-11-18 19:49:04,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d9878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:49:04, skipping insertion in model container [2022-11-18 19:49:04,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:03" (2/3) ... [2022-11-18 19:49:04,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d9878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:49:04, skipping insertion in model container [2022-11-18 19:49:04,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:49:04" (3/3) ... [2022-11-18 19:49:04,856 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-11-18 19:49:04,864 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:49:04,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:49:04,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 19:49:04,876 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:49:04,935 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:49:04,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-11-18 19:49:05,091 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-11-18 19:49:05,092 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:49:05,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-18 19:49:05,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-11-18 19:49:05,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-11-18 19:49:05,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:49:05,149 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;@487bd544, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:49:05,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 19:49:05,193 INFO L130 PetriNetUnfolder]: 0/90 cut-off events. [2022-11-18 19:49:05,194 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:49:05,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:05,195 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:05,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:05,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:05,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1886494958, now seen corresponding path program 1 times [2022-11-18 19:49:05,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:05,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837565264] [2022-11-18 19:49:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:05,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:06,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:06,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837565264] [2022-11-18 19:49:06,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837565264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:06,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:06,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:49:06,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635881063] [2022-11-18 19:49:06,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:06,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:06,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:06,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:06,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:06,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 136 [2022-11-18 19:49:06,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:06,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:06,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 136 [2022-11-18 19:49:06,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:06,320 INFO L130 PetriNetUnfolder]: 17/214 cut-off events. [2022-11-18 19:49:06,320 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 19:49:06,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 214 events. 17/214 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 502 event pairs, 3 based on Foata normal form. 9/216 useless extension candidates. Maximal degree in co-relation 213. Up to 27 conditions per place. [2022-11-18 19:49:06,324 INFO L137 encePairwiseOnDemand]: 131/136 looper letters, 11 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2022-11-18 19:49:06,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 131 transitions, 300 flow [2022-11-18 19:49:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:49:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-11-18 19:49:06,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-11-18 19:49:06,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-11-18 19:49:06,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-11-18 19:49:06,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:06,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-11-18 19:49:06,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:06,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:06,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:06,359 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 384 transitions. [2022-11-18 19:49:06,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 131 transitions, 300 flow [2022-11-18 19:49:06,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 131 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:49:06,386 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-11-18 19:49:06,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-11-18 19:49:06,394 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-11-18 19:49:06,394 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-11-18 19:49:06,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:06,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:06,396 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:06,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:49:06,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:06,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1051469350, now seen corresponding path program 1 times [2022-11-18 19:49:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:06,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766097749] [2022-11-18 19:49:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:07,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:07,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766097749] [2022-11-18 19:49:07,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766097749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:07,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:07,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047147352] [2022-11-18 19:49:07,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:07,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:07,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:07,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:07,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:07,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-18 19:49:07,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:07,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-18 19:49:07,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:11,165 INFO L130 PetriNetUnfolder]: 5568/14173 cut-off events. [2022-11-18 19:49:11,165 INFO L131 PetriNetUnfolder]: For 455/455 co-relation queries the response was YES. [2022-11-18 19:49:11,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22693 conditions, 14173 events. 5568/14173 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 145707 event pairs, 975 based on Foata normal form. 0/13827 useless extension candidates. Maximal degree in co-relation 22627. Up to 2987 conditions per place. [2022-11-18 19:49:11,285 INFO L137 encePairwiseOnDemand]: 120/136 looper letters, 48 selfloop transitions, 14 changer transitions 116/260 dead transitions. [2022-11-18 19:49:11,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 260 transitions, 894 flow [2022-11-18 19:49:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:49:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:49:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1455 transitions. [2022-11-18 19:49:11,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8229638009049773 [2022-11-18 19:49:11,293 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1455 transitions. [2022-11-18 19:49:11,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1455 transitions. [2022-11-18 19:49:11,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:11,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1455 transitions. [2022-11-18 19:49:11,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 111.92307692307692) internal successors, (1455), 13 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:11,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:11,308 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:11,308 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 13 states and 1455 transitions. [2022-11-18 19:49:11,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 260 transitions, 894 flow [2022-11-18 19:49:11,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 260 transitions, 868 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:49:11,319 INFO L231 Difference]: Finished difference. Result has 161 places, 126 transitions, 400 flow [2022-11-18 19:49:11,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=400, PETRI_PLACES=161, PETRI_TRANSITIONS=126} [2022-11-18 19:49:11,321 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 18 predicate places. [2022-11-18 19:49:11,321 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 126 transitions, 400 flow [2022-11-18 19:49:11,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:11,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:11,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:11,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:49:11,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1295892025, now seen corresponding path program 1 times [2022-11-18 19:49:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:11,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326715919] [2022-11-18 19:49:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:11,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:12,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326715919] [2022-11-18 19:49:12,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326715919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:12,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:12,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:49:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250001282] [2022-11-18 19:49:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:12,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:49:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:49:12,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:49:12,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-18 19:49:12,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 126 transitions, 400 flow. Second operand has 10 states, 10 states have (on average 101.3) internal successors, (1013), 10 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:12,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-18 19:49:12,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:15,918 INFO L130 PetriNetUnfolder]: 4935/9478 cut-off events. [2022-11-18 19:49:15,918 INFO L131 PetriNetUnfolder]: For 22909/30595 co-relation queries the response was YES. [2022-11-18 19:49:15,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33899 conditions, 9478 events. 4935/9478 cut-off events. For 22909/30595 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 77152 event pairs, 303 based on Foata normal form. 252/9539 useless extension candidates. Maximal degree in co-relation 33819. Up to 3297 conditions per place. [2022-11-18 19:49:16,072 INFO L137 encePairwiseOnDemand]: 117/136 looper letters, 70 selfloop transitions, 36 changer transitions 165/353 dead transitions. [2022-11-18 19:49:16,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 353 transitions, 2470 flow [2022-11-18 19:49:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:49:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 19:49:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2477 transitions. [2022-11-18 19:49:16,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7918797953964194 [2022-11-18 19:49:16,082 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2477 transitions. [2022-11-18 19:49:16,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2477 transitions. [2022-11-18 19:49:16,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:16,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2477 transitions. [2022-11-18 19:49:16,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 107.69565217391305) internal successors, (2477), 23 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 136.0) internal successors, (3264), 24 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,107 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 136.0) internal successors, (3264), 24 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,107 INFO L175 Difference]: Start difference. First operand has 161 places, 126 transitions, 400 flow. Second operand 23 states and 2477 transitions. [2022-11-18 19:49:16,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 353 transitions, 2470 flow [2022-11-18 19:49:16,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 353 transitions, 2426 flow, removed 22 selfloop flow, removed 3 redundant places. [2022-11-18 19:49:16,320 INFO L231 Difference]: Finished difference. Result has 177 places, 151 transitions, 857 flow [2022-11-18 19:49:16,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=857, PETRI_PLACES=177, PETRI_TRANSITIONS=151} [2022-11-18 19:49:16,323 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 34 predicate places. [2022-11-18 19:49:16,324 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 151 transitions, 857 flow [2022-11-18 19:49:16,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.3) internal successors, (1013), 10 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:16,325 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:16,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:49:16,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1888019385, now seen corresponding path program 1 times [2022-11-18 19:49:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:16,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200463389] [2022-11-18 19:49:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:17,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:17,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200463389] [2022-11-18 19:49:17,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200463389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:17,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:17,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681814144] [2022-11-18 19:49:17,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:17,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:17,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-18 19:49:17,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 151 transitions, 857 flow. Second operand has 7 states, 7 states have (on average 102.42857142857143) internal successors, (717), 7 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:17,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:17,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-18 19:49:17,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:19,729 INFO L130 PetriNetUnfolder]: 3691/7399 cut-off events. [2022-11-18 19:49:19,730 INFO L131 PetriNetUnfolder]: For 71651/83675 co-relation queries the response was YES. [2022-11-18 19:49:19,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40993 conditions, 7399 events. 3691/7399 cut-off events. For 71651/83675 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 59766 event pairs, 420 based on Foata normal form. 157/7400 useless extension candidates. Maximal degree in co-relation 40887. Up to 2517 conditions per place. [2022-11-18 19:49:19,871 INFO L137 encePairwiseOnDemand]: 122/136 looper letters, 81 selfloop transitions, 16 changer transitions 142/321 dead transitions. [2022-11-18 19:49:19,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 321 transitions, 3475 flow [2022-11-18 19:49:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:49:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:49:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1421 transitions. [2022-11-18 19:49:19,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8037330316742082 [2022-11-18 19:49:19,877 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1421 transitions. [2022-11-18 19:49:19,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1421 transitions. [2022-11-18 19:49:19,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:19,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1421 transitions. [2022-11-18 19:49:19,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 109.3076923076923) internal successors, (1421), 13 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,888 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,889 INFO L175 Difference]: Start difference. First operand has 177 places, 151 transitions, 857 flow. Second operand 13 states and 1421 transitions. [2022-11-18 19:49:19,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 321 transitions, 3475 flow [2022-11-18 19:49:20,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 321 transitions, 3204 flow, removed 134 selfloop flow, removed 11 redundant places. [2022-11-18 19:49:20,038 INFO L231 Difference]: Finished difference. Result has 175 places, 161 transitions, 1056 flow [2022-11-18 19:49:20,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1056, PETRI_PLACES=175, PETRI_TRANSITIONS=161} [2022-11-18 19:49:20,040 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 32 predicate places. [2022-11-18 19:49:20,040 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 161 transitions, 1056 flow [2022-11-18 19:49:20,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.42857142857143) internal successors, (717), 7 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:20,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:20,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:20,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:49:20,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:20,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:20,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1456722442, now seen corresponding path program 1 times [2022-11-18 19:49:20,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:20,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586418241] [2022-11-18 19:49:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:21,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:21,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586418241] [2022-11-18 19:49:21,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586418241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:21,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:21,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:49:21,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119298605] [2022-11-18 19:49:21,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:21,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:49:21,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:21,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:49:21,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:49:21,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-11-18 19:49:21,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 161 transitions, 1056 flow. Second operand has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:21,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:21,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-11-18 19:49:21,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:23,075 INFO L130 PetriNetUnfolder]: 2777/5496 cut-off events. [2022-11-18 19:49:23,075 INFO L131 PetriNetUnfolder]: For 63685/72875 co-relation queries the response was YES. [2022-11-18 19:49:23,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32324 conditions, 5496 events. 2777/5496 cut-off events. For 63685/72875 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 41778 event pairs, 509 based on Foata normal form. 557/5864 useless extension candidates. Maximal degree in co-relation 32221. Up to 2119 conditions per place. [2022-11-18 19:49:23,171 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 54 selfloop transitions, 33 changer transitions 86/288 dead transitions. [2022-11-18 19:49:23,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 288 transitions, 3162 flow [2022-11-18 19:49:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:49:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:49:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1719 transitions. [2022-11-18 19:49:23,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8426470588235294 [2022-11-18 19:49:23,179 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1719 transitions. [2022-11-18 19:49:23,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1719 transitions. [2022-11-18 19:49:23,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:23,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1719 transitions. [2022-11-18 19:49:23,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 114.6) internal successors, (1719), 15 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:23,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 136.0) internal successors, (2176), 16 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:23,194 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 136.0) internal successors, (2176), 16 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:23,194 INFO L175 Difference]: Start difference. First operand has 175 places, 161 transitions, 1056 flow. Second operand 15 states and 1719 transitions. [2022-11-18 19:49:23,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 288 transitions, 3162 flow [2022-11-18 19:49:23,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 288 transitions, 3082 flow, removed 34 selfloop flow, removed 5 redundant places. [2022-11-18 19:49:23,345 INFO L231 Difference]: Finished difference. Result has 187 places, 191 transitions, 1654 flow [2022-11-18 19:49:23,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1654, PETRI_PLACES=187, PETRI_TRANSITIONS=191} [2022-11-18 19:49:23,349 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 44 predicate places. [2022-11-18 19:49:23,350 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 191 transitions, 1654 flow [2022-11-18 19:49:23,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:23,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:23,351 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:23,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:49:23,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:23,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:23,353 INFO L85 PathProgramCache]: Analyzing trace with hash 43085852, now seen corresponding path program 1 times [2022-11-18 19:49:23,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:23,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778414979] [2022-11-18 19:49:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:23,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:24,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:24,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778414979] [2022-11-18 19:49:24,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778414979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:24,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:24,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:49:24,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593278523] [2022-11-18 19:49:24,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:24,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:49:24,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:49:24,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:49:24,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-11-18 19:49:24,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 191 transitions, 1654 flow. Second operand has 11 states, 11 states have (on average 110.72727272727273) internal successors, (1218), 11 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:24,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:24,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-11-18 19:49:24,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:26,754 INFO L130 PetriNetUnfolder]: 2300/4982 cut-off events. [2022-11-18 19:49:26,754 INFO L131 PetriNetUnfolder]: For 61643/68990 co-relation queries the response was YES. [2022-11-18 19:49:26,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29164 conditions, 4982 events. 2300/4982 cut-off events. For 61643/68990 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 39605 event pairs, 310 based on Foata normal form. 517/5213 useless extension candidates. Maximal degree in co-relation 29047. Up to 2016 conditions per place. [2022-11-18 19:49:26,836 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 40 selfloop transitions, 22 changer transitions 52/261 dead transitions. [2022-11-18 19:49:26,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 261 transitions, 2872 flow [2022-11-18 19:49:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:49:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:49:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1476 transitions. [2022-11-18 19:49:26,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.834841628959276 [2022-11-18 19:49:26,841 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1476 transitions. [2022-11-18 19:49:26,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1476 transitions. [2022-11-18 19:49:26,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:26,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1476 transitions. [2022-11-18 19:49:26,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.53846153846153) internal successors, (1476), 13 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,851 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,851 INFO L175 Difference]: Start difference. First operand has 187 places, 191 transitions, 1654 flow. Second operand 13 states and 1476 transitions. [2022-11-18 19:49:26,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 261 transitions, 2872 flow [2022-11-18 19:49:26,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 261 transitions, 2715 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-11-18 19:49:26,985 INFO L231 Difference]: Finished difference. Result has 184 places, 198 transitions, 1765 flow [2022-11-18 19:49:26,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1765, PETRI_PLACES=184, PETRI_TRANSITIONS=198} [2022-11-18 19:49:26,986 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 41 predicate places. [2022-11-18 19:49:26,987 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 198 transitions, 1765 flow [2022-11-18 19:49:26,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.72727272727273) internal successors, (1218), 11 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:26,988 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:26,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:49:26,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash 877623225, now seen corresponding path program 1 times [2022-11-18 19:49:26,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:26,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529846717] [2022-11-18 19:49:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:27,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:27,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529846717] [2022-11-18 19:49:27,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529846717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:27,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:27,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:27,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291096918] [2022-11-18 19:49:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:27,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:27,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:27,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:27,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:27,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-18 19:49:27,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 198 transitions, 1765 flow. Second operand has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:27,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:27,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-18 19:49:27,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:29,389 INFO L130 PetriNetUnfolder]: 2342/5232 cut-off events. [2022-11-18 19:49:29,389 INFO L131 PetriNetUnfolder]: For 63906/86709 co-relation queries the response was YES. [2022-11-18 19:49:29,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33534 conditions, 5232 events. 2342/5232 cut-off events. For 63906/86709 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 42859 event pairs, 344 based on Foata normal form. 57/5134 useless extension candidates. Maximal degree in co-relation 33414. Up to 1958 conditions per place. [2022-11-18 19:49:29,467 INFO L137 encePairwiseOnDemand]: 121/136 looper letters, 92 selfloop transitions, 61 changer transitions 87/322 dead transitions. [2022-11-18 19:49:29,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 322 transitions, 4174 flow [2022-11-18 19:49:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:49:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:49:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2022-11-18 19:49:29,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.790158371040724 [2022-11-18 19:49:29,473 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2022-11-18 19:49:29,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2022-11-18 19:49:29,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:29,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2022-11-18 19:49:29,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.46153846153847) internal successors, (1397), 13 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:29,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:29,483 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:29,483 INFO L175 Difference]: Start difference. First operand has 184 places, 198 transitions, 1765 flow. Second operand 13 states and 1397 transitions. [2022-11-18 19:49:29,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 322 transitions, 4174 flow [2022-11-18 19:49:29,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 322 transitions, 4042 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-11-18 19:49:29,657 INFO L231 Difference]: Finished difference. Result has 194 places, 211 transitions, 2211 flow [2022-11-18 19:49:29,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2211, PETRI_PLACES=194, PETRI_TRANSITIONS=211} [2022-11-18 19:49:29,659 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 51 predicate places. [2022-11-18 19:49:29,660 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 211 transitions, 2211 flow [2022-11-18 19:49:29,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:29,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:29,661 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:29,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:49:29,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:29,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash -481347339, now seen corresponding path program 1 times [2022-11-18 19:49:29,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:29,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943821586] [2022-11-18 19:49:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:29,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:30,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:30,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943821586] [2022-11-18 19:49:30,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943821586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:30,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:30,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:49:30,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131890423] [2022-11-18 19:49:30,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:30,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:49:30,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:30,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:49:30,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:49:30,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-18 19:49:30,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 211 transitions, 2211 flow. Second operand has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:30,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:30,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-18 19:49:30,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:33,524 INFO L130 PetriNetUnfolder]: 2561/5737 cut-off events. [2022-11-18 19:49:33,524 INFO L131 PetriNetUnfolder]: For 101100/126363 co-relation queries the response was YES. [2022-11-18 19:49:33,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41081 conditions, 5737 events. 2561/5737 cut-off events. For 101100/126363 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 47468 event pairs, 233 based on Foata normal form. 228/5720 useless extension candidates. Maximal degree in co-relation 40955. Up to 2182 conditions per place. [2022-11-18 19:49:33,626 INFO L137 encePairwiseOnDemand]: 118/136 looper letters, 95 selfloop transitions, 110 changer transitions 113/400 dead transitions. [2022-11-18 19:49:33,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 400 transitions, 6332 flow [2022-11-18 19:49:33,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:49:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:49:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1929 transitions. [2022-11-18 19:49:33,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7879901960784313 [2022-11-18 19:49:33,633 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1929 transitions. [2022-11-18 19:49:33,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1929 transitions. [2022-11-18 19:49:33,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:33,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1929 transitions. [2022-11-18 19:49:33,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 107.16666666666667) internal successors, (1929), 18 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:33,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 136.0) internal successors, (2584), 19 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:33,648 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 136.0) internal successors, (2584), 19 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:33,648 INFO L175 Difference]: Start difference. First operand has 194 places, 211 transitions, 2211 flow. Second operand 18 states and 1929 transitions. [2022-11-18 19:49:33,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 400 transitions, 6332 flow [2022-11-18 19:49:33,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 400 transitions, 6026 flow, removed 153 selfloop flow, removed 9 redundant places. [2022-11-18 19:49:33,926 INFO L231 Difference]: Finished difference. Result has 206 places, 262 transitions, 3470 flow [2022-11-18 19:49:33,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3470, PETRI_PLACES=206, PETRI_TRANSITIONS=262} [2022-11-18 19:49:33,927 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 63 predicate places. [2022-11-18 19:49:33,927 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 262 transitions, 3470 flow [2022-11-18 19:49:33,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:33,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:33,928 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:33,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:49:33,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1303777131, now seen corresponding path program 2 times [2022-11-18 19:49:33,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:33,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359161030] [2022-11-18 19:49:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:33,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:35,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359161030] [2022-11-18 19:49:35,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359161030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:35,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:35,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:49:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234262625] [2022-11-18 19:49:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:35,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:49:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:49:35,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:49:35,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-11-18 19:49:35,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 262 transitions, 3470 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:35,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:35,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-11-18 19:49:35,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:36,860 INFO L130 PetriNetUnfolder]: 2355/5342 cut-off events. [2022-11-18 19:49:36,861 INFO L131 PetriNetUnfolder]: For 150181/183456 co-relation queries the response was YES. [2022-11-18 19:49:36,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42396 conditions, 5342 events. 2355/5342 cut-off events. For 150181/183456 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 45005 event pairs, 209 based on Foata normal form. 958/6068 useless extension candidates. Maximal degree in co-relation 42269. Up to 2368 conditions per place. [2022-11-18 19:49:36,965 INFO L137 encePairwiseOnDemand]: 126/136 looper letters, 65 selfloop transitions, 43 changer transitions 48/338 dead transitions. [2022-11-18 19:49:36,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 338 transitions, 5738 flow [2022-11-18 19:49:36,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:49:36,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:49:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1285 transitions. [2022-11-18 19:49:36,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858957219251337 [2022-11-18 19:49:36,970 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1285 transitions. [2022-11-18 19:49:36,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1285 transitions. [2022-11-18 19:49:36,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:36,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1285 transitions. [2022-11-18 19:49:36,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.81818181818181) internal successors, (1285), 11 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:36,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:36,978 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:36,978 INFO L175 Difference]: Start difference. First operand has 206 places, 262 transitions, 3470 flow. Second operand 11 states and 1285 transitions. [2022-11-18 19:49:36,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 338 transitions, 5738 flow [2022-11-18 19:49:37,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 338 transitions, 5245 flow, removed 182 selfloop flow, removed 5 redundant places. [2022-11-18 19:49:37,653 INFO L231 Difference]: Finished difference. Result has 210 places, 285 transitions, 3887 flow [2022-11-18 19:49:37,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=3156, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3887, PETRI_PLACES=210, PETRI_TRANSITIONS=285} [2022-11-18 19:49:37,654 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 67 predicate places. [2022-11-18 19:49:37,654 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 285 transitions, 3887 flow [2022-11-18 19:49:37,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:37,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:37,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:37,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:49:37,655 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:37,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash -820221231, now seen corresponding path program 3 times [2022-11-18 19:49:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:37,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730713457] [2022-11-18 19:49:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:37,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:39,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:39,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730713457] [2022-11-18 19:49:39,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730713457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:39,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:39,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 19:49:39,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917747707] [2022-11-18 19:49:39,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:39,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:49:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:49:39,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:49:39,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-18 19:49:39,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 285 transitions, 3887 flow. Second operand has 13 states, 13 states have (on average 101.07692307692308) internal successors, (1314), 13 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:39,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:39,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-18 19:49:39,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:41,846 INFO L130 PetriNetUnfolder]: 2669/6050 cut-off events. [2022-11-18 19:49:41,847 INFO L131 PetriNetUnfolder]: For 123046/221390 co-relation queries the response was YES. [2022-11-18 19:49:41,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47778 conditions, 6050 events. 2669/6050 cut-off events. For 123046/221390 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52228 event pairs, 283 based on Foata normal form. 184/6090 useless extension candidates. Maximal degree in co-relation 47639. Up to 2746 conditions per place. [2022-11-18 19:49:41,951 INFO L137 encePairwiseOnDemand]: 117/136 looper letters, 194 selfloop transitions, 78 changer transitions 110/464 dead transitions. [2022-11-18 19:49:41,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 464 transitions, 8417 flow [2022-11-18 19:49:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:49:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 19:49:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1699 transitions. [2022-11-18 19:49:41,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7807904411764706 [2022-11-18 19:49:41,956 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1699 transitions. [2022-11-18 19:49:41,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1699 transitions. [2022-11-18 19:49:41,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:41,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1699 transitions. [2022-11-18 19:49:41,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 106.1875) internal successors, (1699), 16 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:41,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 136.0) internal successors, (2312), 17 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:41,968 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 136.0) internal successors, (2312), 17 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:41,968 INFO L175 Difference]: Start difference. First operand has 210 places, 285 transitions, 3887 flow. Second operand 16 states and 1699 transitions. [2022-11-18 19:49:41,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 464 transitions, 8417 flow [2022-11-18 19:49:42,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 464 transitions, 8118 flow, removed 149 selfloop flow, removed 13 redundant places. [2022-11-18 19:49:42,382 INFO L231 Difference]: Finished difference. Result has 216 places, 319 transitions, 4786 flow [2022-11-18 19:49:42,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4786, PETRI_PLACES=216, PETRI_TRANSITIONS=319} [2022-11-18 19:49:42,384 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 73 predicate places. [2022-11-18 19:49:42,384 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 319 transitions, 4786 flow [2022-11-18 19:49:42,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.07692307692308) internal successors, (1314), 13 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:42,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:42,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:42,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:49:42,386 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:42,387 INFO L85 PathProgramCache]: Analyzing trace with hash 430774612, now seen corresponding path program 1 times [2022-11-18 19:49:42,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:42,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934870318] [2022-11-18 19:49:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:42,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:43,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:43,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934870318] [2022-11-18 19:49:43,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934870318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:43,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:43,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 19:49:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361300706] [2022-11-18 19:49:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:43,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:49:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:43,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:49:43,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:49:43,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 136 [2022-11-18 19:49:43,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 319 transitions, 4786 flow. Second operand has 13 states, 13 states have (on average 111.53846153846153) internal successors, (1450), 13 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:43,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:43,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 136 [2022-11-18 19:49:43,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:45,749 INFO L130 PetriNetUnfolder]: 1996/4859 cut-off events. [2022-11-18 19:49:45,750 INFO L131 PetriNetUnfolder]: For 109026/189418 co-relation queries the response was YES. [2022-11-18 19:49:45,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37350 conditions, 4859 events. 1996/4859 cut-off events. For 109026/189418 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 42886 event pairs, 165 based on Foata normal form. 454/5145 useless extension candidates. Maximal degree in co-relation 37212. Up to 2023 conditions per place. [2022-11-18 19:49:45,846 INFO L137 encePairwiseOnDemand]: 123/136 looper letters, 76 selfloop transitions, 50 changer transitions 18/344 dead transitions. [2022-11-18 19:49:45,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 344 transitions, 5734 flow [2022-11-18 19:49:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:49:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:49:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1694 transitions. [2022-11-18 19:49:45,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8303921568627451 [2022-11-18 19:49:45,850 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1694 transitions. [2022-11-18 19:49:45,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1694 transitions. [2022-11-18 19:49:45,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:45,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1694 transitions. [2022-11-18 19:49:45,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 112.93333333333334) internal successors, (1694), 15 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:45,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 136.0) internal successors, (2176), 16 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:45,862 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 136.0) internal successors, (2176), 16 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:45,863 INFO L175 Difference]: Start difference. First operand has 216 places, 319 transitions, 4786 flow. Second operand 15 states and 1694 transitions. [2022-11-18 19:49:45,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 344 transitions, 5734 flow [2022-11-18 19:49:46,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 344 transitions, 5408 flow, removed 160 selfloop flow, removed 9 redundant places. [2022-11-18 19:49:46,289 INFO L231 Difference]: Finished difference. Result has 222 places, 322 transitions, 4800 flow [2022-11-18 19:49:46,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=4554, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4800, PETRI_PLACES=222, PETRI_TRANSITIONS=322} [2022-11-18 19:49:46,291 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 79 predicate places. [2022-11-18 19:49:46,291 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 322 transitions, 4800 flow [2022-11-18 19:49:46,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.53846153846153) internal successors, (1450), 13 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:46,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:46,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:46,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:49:46,294 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:46,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash -786492680, now seen corresponding path program 2 times [2022-11-18 19:49:46,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:46,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683214589] [2022-11-18 19:49:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:46,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:48,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:48,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683214589] [2022-11-18 19:49:48,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683214589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:48,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:48,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:49:48,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199948026] [2022-11-18 19:49:48,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:48,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:49:48,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:48,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:49:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:49:48,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-18 19:49:48,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 322 transitions, 4800 flow. Second operand has 12 states, 12 states have (on average 101.33333333333333) internal successors, (1216), 12 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:48,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:48,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-18 19:49:48,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:49,976 INFO L130 PetriNetUnfolder]: 2378/5707 cut-off events. [2022-11-18 19:49:49,976 INFO L131 PetriNetUnfolder]: For 112835/204938 co-relation queries the response was YES. [2022-11-18 19:49:50,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44350 conditions, 5707 events. 2378/5707 cut-off events. For 112835/204938 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 51009 event pairs, 287 based on Foata normal form. 329/5840 useless extension candidates. Maximal degree in co-relation 44204. Up to 2900 conditions per place. [2022-11-18 19:49:50,064 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 241 selfloop transitions, 32 changer transitions 74/429 dead transitions. [2022-11-18 19:49:50,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 429 transitions, 7631 flow [2022-11-18 19:49:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:49:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:49:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1374 transitions. [2022-11-18 19:49:50,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7771493212669683 [2022-11-18 19:49:50,070 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1374 transitions. [2022-11-18 19:49:50,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1374 transitions. [2022-11-18 19:49:50,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:50,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1374 transitions. [2022-11-18 19:49:50,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.6923076923077) internal successors, (1374), 13 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:50,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:50,079 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:50,079 INFO L175 Difference]: Start difference. First operand has 222 places, 322 transitions, 4800 flow. Second operand 13 states and 1374 transitions. [2022-11-18 19:49:50,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 429 transitions, 7631 flow [2022-11-18 19:49:50,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 429 transitions, 7396 flow, removed 76 selfloop flow, removed 13 redundant places. [2022-11-18 19:49:50,500 INFO L231 Difference]: Finished difference. Result has 222 places, 325 transitions, 4863 flow [2022-11-18 19:49:50,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4863, PETRI_PLACES=222, PETRI_TRANSITIONS=325} [2022-11-18 19:49:50,501 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 79 predicate places. [2022-11-18 19:49:50,501 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 325 transitions, 4863 flow [2022-11-18 19:49:50,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.33333333333333) internal successors, (1216), 12 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:50,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:50,502 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:50,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:49:50,503 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:50,503 INFO L85 PathProgramCache]: Analyzing trace with hash -128903954, now seen corresponding path program 3 times [2022-11-18 19:49:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:50,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367915531] [2022-11-18 19:49:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:51,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:51,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367915531] [2022-11-18 19:49:51,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367915531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:51,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:51,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 19:49:51,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566773658] [2022-11-18 19:49:51,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:51,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:49:51,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:51,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:49:51,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:49:51,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 136 [2022-11-18 19:49:51,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 325 transitions, 4863 flow. Second operand has 13 states, 13 states have (on average 103.0) internal successors, (1339), 13 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:51,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:51,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 136 [2022-11-18 19:49:51,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:54,058 INFO L130 PetriNetUnfolder]: 2454/6316 cut-off events. [2022-11-18 19:49:54,059 INFO L131 PetriNetUnfolder]: For 115780/210435 co-relation queries the response was YES. [2022-11-18 19:49:54,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46576 conditions, 6316 events. 2454/6316 cut-off events. For 115780/210435 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 58783 event pairs, 177 based on Foata normal form. 446/6509 useless extension candidates. Maximal degree in co-relation 46432. Up to 2236 conditions per place. [2022-11-18 19:49:54,159 INFO L137 encePairwiseOnDemand]: 118/136 looper letters, 184 selfloop transitions, 140 changer transitions 108/516 dead transitions. [2022-11-18 19:49:54,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 516 transitions, 9569 flow [2022-11-18 19:49:54,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:49:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 19:49:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2146 transitions. [2022-11-18 19:49:54,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7889705882352941 [2022-11-18 19:49:54,163 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2146 transitions. [2022-11-18 19:49:54,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2146 transitions. [2022-11-18 19:49:54,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:54,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2146 transitions. [2022-11-18 19:49:54,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 107.3) internal successors, (2146), 20 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:54,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 136.0) internal successors, (2856), 21 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:54,173 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 136.0) internal successors, (2856), 21 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:54,174 INFO L175 Difference]: Start difference. First operand has 222 places, 325 transitions, 4863 flow. Second operand 20 states and 2146 transitions. [2022-11-18 19:49:54,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 516 transitions, 9569 flow [2022-11-18 19:49:54,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 516 transitions, 9322 flow, removed 105 selfloop flow, removed 10 redundant places. [2022-11-18 19:49:54,584 INFO L231 Difference]: Finished difference. Result has 241 places, 366 transitions, 6296 flow [2022-11-18 19:49:54,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=4767, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6296, PETRI_PLACES=241, PETRI_TRANSITIONS=366} [2022-11-18 19:49:54,586 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 98 predicate places. [2022-11-18 19:49:54,586 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 366 transitions, 6296 flow [2022-11-18 19:49:54,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 103.0) internal successors, (1339), 13 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:54,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:54,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:54,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:49:54,587 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:54,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1912379498, now seen corresponding path program 4 times [2022-11-18 19:49:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:54,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977721724] [2022-11-18 19:49:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:54,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:56,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:56,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977721724] [2022-11-18 19:49:56,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977721724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:56,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:56,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:49:56,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45773124] [2022-11-18 19:49:56,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:56,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:49:56,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:56,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:49:56,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:49:56,162 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 136 [2022-11-18 19:49:56,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 366 transitions, 6296 flow. Second operand has 15 states, 15 states have (on average 99.93333333333334) internal successors, (1499), 15 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:56,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:56,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 136 [2022-11-18 19:49:56,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:58,993 INFO L130 PetriNetUnfolder]: 2384/6392 cut-off events. [2022-11-18 19:49:58,993 INFO L131 PetriNetUnfolder]: For 135535/233794 co-relation queries the response was YES. [2022-11-18 19:49:59,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49987 conditions, 6392 events. 2384/6392 cut-off events. For 135535/233794 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 62367 event pairs, 101 based on Foata normal form. 432/6646 useless extension candidates. Maximal degree in co-relation 49827. Up to 2171 conditions per place. [2022-11-18 19:49:59,108 INFO L137 encePairwiseOnDemand]: 115/136 looper letters, 266 selfloop transitions, 177 changer transitions 93/617 dead transitions. [2022-11-18 19:49:59,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 617 transitions, 12560 flow [2022-11-18 19:49:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:49:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 19:49:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2307 transitions. [2022-11-18 19:49:59,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7710561497326203 [2022-11-18 19:49:59,113 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2307 transitions. [2022-11-18 19:49:59,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2307 transitions. [2022-11-18 19:49:59,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:59,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2307 transitions. [2022-11-18 19:49:59,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 104.86363636363636) internal successors, (2307), 22 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:59,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 136.0) internal successors, (3128), 23 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:59,124 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 136.0) internal successors, (3128), 23 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:59,124 INFO L175 Difference]: Start difference. First operand has 241 places, 366 transitions, 6296 flow. Second operand 22 states and 2307 transitions. [2022-11-18 19:49:59,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 617 transitions, 12560 flow [2022-11-18 19:49:59,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 617 transitions, 12301 flow, removed 127 selfloop flow, removed 12 redundant places. [2022-11-18 19:49:59,767 INFO L231 Difference]: Finished difference. Result has 254 places, 432 transitions, 8416 flow [2022-11-18 19:49:59,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8416, PETRI_PLACES=254, PETRI_TRANSITIONS=432} [2022-11-18 19:49:59,768 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 111 predicate places. [2022-11-18 19:49:59,768 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 432 transitions, 8416 flow [2022-11-18 19:49:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.93333333333334) internal successors, (1499), 15 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:59,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:59,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:59,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:49:59,769 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:49:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash -14641898, now seen corresponding path program 1 times [2022-11-18 19:49:59,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:59,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662871205] [2022-11-18 19:49:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:00,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:00,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662871205] [2022-11-18 19:50:00,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662871205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:00,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:00,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:50:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209531761] [2022-11-18 19:50:00,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:00,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:50:00,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:50:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:50:00,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-11-18 19:50:00,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 432 transitions, 8416 flow. Second operand has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:00,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:00,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-11-18 19:50:00,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:15,851 INFO L130 PetriNetUnfolder]: 24670/44840 cut-off events. [2022-11-18 19:50:15,852 INFO L131 PetriNetUnfolder]: For 1386591/1533426 co-relation queries the response was YES. [2022-11-18 19:50:16,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265281 conditions, 44840 events. 24670/44840 cut-off events. For 1386591/1533426 co-relation queries the response was YES. Maximal size of possible extension queue 3495. Compared 457630 event pairs, 1432 based on Foata normal form. 4921/46732 useless extension candidates. Maximal degree in co-relation 265119. Up to 15360 conditions per place. [2022-11-18 19:50:16,893 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 387 selfloop transitions, 20 changer transitions 97/774 dead transitions. [2022-11-18 19:50:16,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 774 transitions, 18933 flow [2022-11-18 19:50:16,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:50:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:50:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1194 transitions. [2022-11-18 19:50:16,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8779411764705882 [2022-11-18 19:50:16,895 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1194 transitions. [2022-11-18 19:50:16,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1194 transitions. [2022-11-18 19:50:16,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:16,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1194 transitions. [2022-11-18 19:50:16,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.4) internal successors, (1194), 10 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:16,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:16,899 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:16,899 INFO L175 Difference]: Start difference. First operand has 254 places, 432 transitions, 8416 flow. Second operand 10 states and 1194 transitions. [2022-11-18 19:50:16,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 774 transitions, 18933 flow [2022-11-18 19:50:21,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 774 transitions, 18466 flow, removed 148 selfloop flow, removed 11 redundant places. [2022-11-18 19:50:21,879 INFO L231 Difference]: Finished difference. Result has 249 places, 428 transitions, 7895 flow [2022-11-18 19:50:21,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=7752, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7895, PETRI_PLACES=249, PETRI_TRANSITIONS=428} [2022-11-18 19:50:21,880 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 106 predicate places. [2022-11-18 19:50:21,881 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 428 transitions, 7895 flow [2022-11-18 19:50:21,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:21,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:21,881 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:50:21,882 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:50:21,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash 623724526, now seen corresponding path program 1 times [2022-11-18 19:50:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:21,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141428817] [2022-11-18 19:50:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:21,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:22,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141428817] [2022-11-18 19:50:22,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141428817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:22,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:22,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:50:22,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297389100] [2022-11-18 19:50:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:22,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:50:22,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:22,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:50:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:22,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-11-18 19:50:22,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 428 transitions, 7895 flow. Second operand has 7 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:22,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:22,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-11-18 19:50:22,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:39,198 INFO L130 PetriNetUnfolder]: 23118/44319 cut-off events. [2022-11-18 19:50:39,198 INFO L131 PetriNetUnfolder]: For 1176399/1301311 co-relation queries the response was YES. [2022-11-18 19:50:39,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288209 conditions, 44319 events. 23118/44319 cut-off events. For 1176399/1301311 co-relation queries the response was YES. Maximal size of possible extension queue 3595. Compared 482485 event pairs, 464 based on Foata normal form. 6393/48982 useless extension candidates. Maximal degree in co-relation 288048. Up to 14326 conditions per place. [2022-11-18 19:50:40,017 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 420 selfloop transitions, 38 changer transitions 155/853 dead transitions. [2022-11-18 19:50:40,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 853 transitions, 20998 flow [2022-11-18 19:50:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:50:40,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:50:40,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1555 transitions. [2022-11-18 19:50:40,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879524886877828 [2022-11-18 19:50:40,020 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1555 transitions. [2022-11-18 19:50:40,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1555 transitions. [2022-11-18 19:50:40,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:40,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1555 transitions. [2022-11-18 19:50:40,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.61538461538461) internal successors, (1555), 13 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:40,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:40,026 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:40,027 INFO L175 Difference]: Start difference. First operand has 249 places, 428 transitions, 7895 flow. Second operand 13 states and 1555 transitions. [2022-11-18 19:50:40,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 853 transitions, 20998 flow [2022-11-18 19:50:44,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 853 transitions, 20815 flow, removed 75 selfloop flow, removed 2 redundant places. [2022-11-18 19:50:44,692 INFO L231 Difference]: Finished difference. Result has 265 places, 393 transitions, 6738 flow [2022-11-18 19:50:44,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=6481, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6738, PETRI_PLACES=265, PETRI_TRANSITIONS=393} [2022-11-18 19:50:44,693 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 122 predicate places. [2022-11-18 19:50:44,694 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 393 transitions, 6738 flow [2022-11-18 19:50:44,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:44,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:44,695 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:44,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:50:44,695 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:50:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash -266704105, now seen corresponding path program 1 times [2022-11-18 19:50:44,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:44,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660931085] [2022-11-18 19:50:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:44,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:45,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:45,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660931085] [2022-11-18 19:50:45,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660931085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:45,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:45,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:50:45,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806751617] [2022-11-18 19:50:45,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:45,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:50:45,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:45,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:50:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:50:45,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 136 [2022-11-18 19:50:45,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 393 transitions, 6738 flow. Second operand has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:45,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:45,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 136 [2022-11-18 19:50:45,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:52,033 INFO L130 PetriNetUnfolder]: 7012/24231 cut-off events. [2022-11-18 19:50:52,034 INFO L131 PetriNetUnfolder]: For 195409/225705 co-relation queries the response was YES. [2022-11-18 19:50:52,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112422 conditions, 24231 events. 7012/24231 cut-off events. For 195409/225705 co-relation queries the response was YES. Maximal size of possible extension queue 2965. Compared 357453 event pairs, 453 based on Foata normal form. 895/23286 useless extension candidates. Maximal degree in co-relation 112255. Up to 7635 conditions per place. [2022-11-18 19:50:52,856 INFO L137 encePairwiseOnDemand]: 130/136 looper letters, 143 selfloop transitions, 71 changer transitions 75/493 dead transitions. [2022-11-18 19:50:52,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 493 transitions, 9779 flow [2022-11-18 19:50:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:50:52,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:50:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1073 transitions. [2022-11-18 19:50:52,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766339869281046 [2022-11-18 19:50:52,859 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1073 transitions. [2022-11-18 19:50:52,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1073 transitions. [2022-11-18 19:50:52,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:52,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1073 transitions. [2022-11-18 19:50:52,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.22222222222223) internal successors, (1073), 9 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,866 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:52,866 INFO L175 Difference]: Start difference. First operand has 265 places, 393 transitions, 6738 flow. Second operand 9 states and 1073 transitions. [2022-11-18 19:50:52,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 493 transitions, 9779 flow