./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix005.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix005.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8 --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 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 --- 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-e04fb08 [2022-11-16 12:13:01,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:13:01,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:13:01,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:13:01,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:13:01,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:13:01,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:13:01,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:13:01,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:13:01,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:13:01,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:13:01,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:13:01,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:13:01,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:13:01,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:13:01,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:13:01,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:13:01,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:13:01,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:13:01,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:13:01,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:13:01,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:13:01,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:13:01,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:13:01,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:13:01,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:13:01,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:13:01,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:13:01,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:13:01,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:13:01,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:13:01,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:13:01,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:13:01,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:13:01,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:13:01,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:13:01,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:13:01,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:13:01,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:13:01,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:13:01,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:13:01,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:13:01,537 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:13:01,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:13:01,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:13:01,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:13:01,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:13:01,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:13:01,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:13:01,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:13:01,539 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:13:01,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:13:01,540 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:13:01,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:13:01,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:13:01,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:13:01,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:13:01,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:13:01,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:13:01,541 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:13:01,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:13:01,542 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:13:01,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:13:01,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:13:01,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:13:01,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:13:01,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:01,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:13:01,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:13:01,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:13:01,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:13:01,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:13:01,544 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:13:01,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:13:01,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:13:01,545 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_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 [2022-11-16 12:13:01,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:13:01,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:13:01,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:13:01,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:13:01,873 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:13:01,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/mix005.opt.i [2022-11-16 12:13:01,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/data/094fdcdb5/1da794cfec844f1ab119a277109e4129/FLAG4329b5c94 [2022-11-16 12:13:02,624 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:13:02,635 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/sv-benchmarks/c/pthread-wmm/mix005.opt.i [2022-11-16 12:13:02,654 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/data/094fdcdb5/1da794cfec844f1ab119a277109e4129/FLAG4329b5c94 [2022-11-16 12:13:02,864 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/data/094fdcdb5/1da794cfec844f1ab119a277109e4129 [2022-11-16 12:13:02,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:13:02,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:13:02,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:02,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:13:02,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:13:02,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:02" (1/1) ... [2022-11-16 12:13:02,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3279d94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:02, skipping insertion in model container [2022-11-16 12:13:02,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:02" (1/1) ... [2022-11-16 12:13:02,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:13:02,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:13:03,144 WARN L229 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_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/sv-benchmarks/c/pthread-wmm/mix005.opt.i[944,957] [2022-11-16 12:13:03,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:03,500 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:13:03,517 WARN L229 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_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/sv-benchmarks/c/pthread-wmm/mix005.opt.i[944,957] [2022-11-16 12:13:03,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:03,647 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:13:03,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03 WrapperNode [2022-11-16 12:13:03,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:03,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:03,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:13:03,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:13:03,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,757 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 164 [2022-11-16 12:13:03,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:03,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:13:03,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:13:03,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:13:03,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:13:03,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:13:03,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:13:03,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:13:03,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:03,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:03,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:13:03,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c8ed69-c7b4-41b5-b1ca-f603f9f37732/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:13:03,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:13:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:13:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:13:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:13:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:13:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 12:13:03,933 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 12:13:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 12:13:03,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 12:13:03,934 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 12:13:03,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 12:13:03,935 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-16 12:13:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-16 12:13:03,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:13:03,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:13:03,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:13:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:13:03,937 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:13:04,141 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:13:04,143 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:13:04,629 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:13:04,956 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:13:04,957 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:13:04,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:04 BoogieIcfgContainer [2022-11-16 12:13:04,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:13:04,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:13:04,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:13:04,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:13:04,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:13:02" (1/3) ... [2022-11-16 12:13:04,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5461df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:04, skipping insertion in model container [2022-11-16 12:13:04,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (2/3) ... [2022-11-16 12:13:04,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5461df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:04, skipping insertion in model container [2022-11-16 12:13:04,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:04" (3/3) ... [2022-11-16 12:13:04,977 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2022-11-16 12:13:04,985 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:13:04,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:13:04,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:13:04,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:13:05,054 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:13:05,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-11-16 12:13:05,173 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-11-16 12:13:05,175 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:13:05,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-11-16 12:13:05,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-11-16 12:13:05,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-11-16 12:13:05,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:13:05,210 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;@63752a3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:13:05,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:13:05,244 INFO L130 PetriNetUnfolder]: 0/91 cut-off events. [2022-11-16 12:13:05,244 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:13:05,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:05,245 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] [2022-11-16 12:13:05,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:13:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1027634525, now seen corresponding path program 1 times [2022-11-16 12:13:05,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:05,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902956600] [2022-11-16 12:13:05,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:05,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:06,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902956600] [2022-11-16 12:13:06,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902956600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:06,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:06,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:13:06,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364425194] [2022-11-16 12:13:06,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:06,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:13:06,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:13:06,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:13:06,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 137 [2022-11-16 12:13:06,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:06,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:06,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 137 [2022-11-16 12:13:06,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:06,268 INFO L130 PetriNetUnfolder]: 14/214 cut-off events. [2022-11-16 12:13:06,268 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:13:06,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 214 events. 14/214 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 457 event pairs, 6 based on Foata normal form. 6/209 useless extension candidates. Maximal degree in co-relation 206. Up to 25 conditions per place. [2022-11-16 12:13:06,272 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 10 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2022-11-16 12:13:06,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 131 transitions, 298 flow [2022-11-16 12:13:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:13:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:13:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2022-11-16 12:13:06,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9391727493917275 [2022-11-16 12:13:06,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2022-11-16 12:13:06,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2022-11-16 12:13:06,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:06,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2022-11-16 12:13:06,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:06,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:06,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:06,310 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 386 transitions. [2022-11-16 12:13:06,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 131 transitions, 298 flow [2022-11-16 12:13:06,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 131 transitions, 294 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:13:06,321 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-11-16 12:13:06,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-11-16 12:13:06,330 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-11-16 12:13:06,330 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-11-16 12:13:06,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:06,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:06,332 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] [2022-11-16 12:13:06,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:13:06,333 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)] === [2022-11-16 12:13:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2016337952, now seen corresponding path program 1 times [2022-11-16 12:13:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821969898] [2022-11-16 12:13:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:06,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:06,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:06,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821969898] [2022-11-16 12:13:06,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821969898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:06,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:06,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:06,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860168228] [2022-11-16 12:13:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:06,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:06,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:06,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:06,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:06,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 137 [2022-11-16 12:13:06,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:06,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:06,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 137 [2022-11-16 12:13:06,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:09,084 INFO L130 PetriNetUnfolder]: 3015/7278 cut-off events. [2022-11-16 12:13:09,084 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-16 12:13:09,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11815 conditions, 7278 events. 3015/7278 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 65891 event pairs, 390 based on Foata normal form. 0/7117 useless extension candidates. Maximal degree in co-relation 11752. Up to 1642 conditions per place. [2022-11-16 12:13:09,136 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 34 selfloop transitions, 9 changer transitions 89/221 dead transitions. [2022-11-16 12:13:09,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 221 transitions, 698 flow [2022-11-16 12:13:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:13:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:13:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1500 transitions. [2022-11-16 12:13:09,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8422234699606962 [2022-11-16 12:13:09,144 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1500 transitions. [2022-11-16 12:13:09,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1500 transitions. [2022-11-16 12:13:09,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:09,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1500 transitions. [2022-11-16 12:13:09,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.38461538461539) internal successors, (1500), 13 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:09,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:09,155 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:09,155 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1500 transitions. [2022-11-16 12:13:09,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 221 transitions, 698 flow [2022-11-16 12:13:09,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 221 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:13:09,161 INFO L231 Difference]: Finished difference. Result has 162 places, 121 transitions, 356 flow [2022-11-16 12:13:09,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=356, PETRI_PLACES=162, PETRI_TRANSITIONS=121} [2022-11-16 12:13:09,162 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-11-16 12:13:09,162 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 121 transitions, 356 flow [2022-11-16 12:13:09,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:09,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:09,164 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] [2022-11-16 12:13:09,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:13:09,164 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)] === [2022-11-16 12:13:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:09,165 INFO L85 PathProgramCache]: Analyzing trace with hash 540612902, now seen corresponding path program 1 times [2022-11-16 12:13:09,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:09,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817809557] [2022-11-16 12:13:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:09,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:09,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:09,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817809557] [2022-11-16 12:13:09,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817809557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:09,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:09,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:09,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432507972] [2022-11-16 12:13:09,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:09,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:09,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:09,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:09,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 137 [2022-11-16 12:13:09,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 121 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:09,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:09,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 137 [2022-11-16 12:13:09,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:10,906 INFO L130 PetriNetUnfolder]: 1919/3926 cut-off events. [2022-11-16 12:13:10,906 INFO L131 PetriNetUnfolder]: For 9885/9901 co-relation queries the response was YES. [2022-11-16 12:13:10,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13902 conditions, 3926 events. 1919/3926 cut-off events. For 9885/9901 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 28268 event pairs, 383 based on Foata normal form. 80/3897 useless extension candidates. Maximal degree in co-relation 13825. Up to 1524 conditions per place. [2022-11-16 12:13:10,958 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 42 selfloop transitions, 17 changer transitions 67/215 dead transitions. [2022-11-16 12:13:10,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 215 transitions, 1248 flow [2022-11-16 12:13:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:13:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:13:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1501 transitions. [2022-11-16 12:13:10,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8427849522740034 [2022-11-16 12:13:10,963 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1501 transitions. [2022-11-16 12:13:10,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1501 transitions. [2022-11-16 12:13:10,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:10,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1501 transitions. [2022-11-16 12:13:10,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.46153846153847) internal successors, (1501), 13 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:10,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:10,974 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:10,974 INFO L175 Difference]: Start difference. First operand has 162 places, 121 transitions, 356 flow. Second operand 13 states and 1501 transitions. [2022-11-16 12:13:10,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 215 transitions, 1248 flow [2022-11-16 12:13:11,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 215 transitions, 1196 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-16 12:13:11,011 INFO L231 Difference]: Finished difference. Result has 158 places, 129 transitions, 497 flow [2022-11-16 12:13:11,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=497, PETRI_PLACES=158, PETRI_TRANSITIONS=129} [2022-11-16 12:13:11,012 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 14 predicate places. [2022-11-16 12:13:11,012 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 129 transitions, 497 flow [2022-11-16 12:13:11,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:11,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:11,013 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] [2022-11-16 12:13:11,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:13:11,013 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)] === [2022-11-16 12:13:11,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash 306340097, now seen corresponding path program 1 times [2022-11-16 12:13:11,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:11,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289464596] [2022-11-16 12:13:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:11,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:11,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289464596] [2022-11-16 12:13:11,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289464596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:11,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:11,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:11,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884451218] [2022-11-16 12:13:11,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:11,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:11,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:11,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:11,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:11,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 137 [2022-11-16 12:13:11,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 129 transitions, 497 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:11,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:11,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 137 [2022-11-16 12:13:11,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:12,220 INFO L130 PetriNetUnfolder]: 1014/2349 cut-off events. [2022-11-16 12:13:12,220 INFO L131 PetriNetUnfolder]: For 9615/11183 co-relation queries the response was YES. [2022-11-16 12:13:12,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9378 conditions, 2349 events. 1014/2349 cut-off events. For 9615/11183 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16736 event pairs, 454 based on Foata normal form. 112/2295 useless extension candidates. Maximal degree in co-relation 9295. Up to 988 conditions per place. [2022-11-16 12:13:12,261 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 24 selfloop transitions, 4 changer transitions 25/160 dead transitions. [2022-11-16 12:13:12,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 160 transitions, 818 flow [2022-11-16 12:13:12,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:12,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:13:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1078 transitions. [2022-11-16 12:13:12,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8742903487429035 [2022-11-16 12:13:12,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1078 transitions. [2022-11-16 12:13:12,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1078 transitions. [2022-11-16 12:13:12,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:12,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1078 transitions. [2022-11-16 12:13:12,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.77777777777777) internal successors, (1078), 9 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:12,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:12,282 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:12,283 INFO L175 Difference]: Start difference. First operand has 158 places, 129 transitions, 497 flow. Second operand 9 states and 1078 transitions. [2022-11-16 12:13:12,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 160 transitions, 818 flow [2022-11-16 12:13:12,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 160 transitions, 764 flow, removed 27 selfloop flow, removed 12 redundant places. [2022-11-16 12:13:12,326 INFO L231 Difference]: Finished difference. Result has 152 places, 129 transitions, 493 flow [2022-11-16 12:13:12,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=493, PETRI_PLACES=152, PETRI_TRANSITIONS=129} [2022-11-16 12:13:12,329 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 8 predicate places. [2022-11-16 12:13:12,329 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 129 transitions, 493 flow [2022-11-16 12:13:12,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:12,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:12,330 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] [2022-11-16 12:13:12,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:13:12,331 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)] === [2022-11-16 12:13:12,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:12,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1507921008, now seen corresponding path program 1 times [2022-11-16 12:13:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:12,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740582133] [2022-11-16 12:13:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:12,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:12,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:12,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740582133] [2022-11-16 12:13:12,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740582133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:12,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:12,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37043029] [2022-11-16 12:13:12,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:12,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:12,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-16 12:13:12,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 129 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 114.33333333333333) internal successors, (686), 6 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:12,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:12,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-16 12:13:12,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:16,819 INFO L130 PetriNetUnfolder]: 9034/15718 cut-off events. [2022-11-16 12:13:16,819 INFO L131 PetriNetUnfolder]: For 32213/52291 co-relation queries the response was YES. [2022-11-16 12:13:16,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44728 conditions, 15718 events. 9034/15718 cut-off events. For 32213/52291 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 131876 event pairs, 719 based on Foata normal form. 154/14380 useless extension candidates. Maximal degree in co-relation 44648. Up to 5144 conditions per place. [2022-11-16 12:13:17,008 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 71 selfloop transitions, 18 changer transitions 24/218 dead transitions. [2022-11-16 12:13:17,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 218 transitions, 1176 flow [2022-11-16 12:13:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:13:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:13:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1211 transitions. [2022-11-16 12:13:17,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8839416058394161 [2022-11-16 12:13:17,012 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1211 transitions. [2022-11-16 12:13:17,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1211 transitions. [2022-11-16 12:13:17,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:17,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1211 transitions. [2022-11-16 12:13:17,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.1) internal successors, (1211), 10 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:17,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:17,019 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:17,020 INFO L175 Difference]: Start difference. First operand has 152 places, 129 transitions, 493 flow. Second operand 10 states and 1211 transitions. [2022-11-16 12:13:17,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 218 transitions, 1176 flow [2022-11-16 12:13:17,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 218 transitions, 1156 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-11-16 12:13:17,061 INFO L231 Difference]: Finished difference. Result has 153 places, 145 transitions, 605 flow [2022-11-16 12:13:17,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=605, PETRI_PLACES=153, PETRI_TRANSITIONS=145} [2022-11-16 12:13:17,065 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 9 predicate places. [2022-11-16 12:13:17,066 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 145 transitions, 605 flow [2022-11-16 12:13:17,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.33333333333333) internal successors, (686), 6 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:17,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:17,067 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] [2022-11-16 12:13:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:13:17,067 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)] === [2022-11-16 12:13:17,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1948104631, now seen corresponding path program 1 times [2022-11-16 12:13:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:17,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435907067] [2022-11-16 12:13:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:17,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:17,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435907067] [2022-11-16 12:13:17,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435907067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:17,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:17,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:17,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740703831] [2022-11-16 12:13:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:17,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:17,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:17,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:17,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 137 [2022-11-16 12:13:17,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 145 transitions, 605 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) [2022-11-16 12:13:17,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:17,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 137 [2022-11-16 12:13:17,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:19,122 INFO L130 PetriNetUnfolder]: 2289/7447 cut-off events. [2022-11-16 12:13:19,123 INFO L131 PetriNetUnfolder]: For 13175/15435 co-relation queries the response was YES. [2022-11-16 12:13:19,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21989 conditions, 7447 events. 2289/7447 cut-off events. For 13175/15435 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 81707 event pairs, 995 based on Foata normal form. 164/6992 useless extension candidates. Maximal degree in co-relation 21908. Up to 1725 conditions per place. [2022-11-16 12:13:19,226 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 46 selfloop transitions, 15 changer transitions 1/179 dead transitions. [2022-11-16 12:13:19,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 179 transitions, 928 flow [2022-11-16 12:13:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:13:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1081 transitions. [2022-11-16 12:13:19,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8767234387672344 [2022-11-16 12:13:19,230 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1081 transitions. [2022-11-16 12:13:19,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1081 transitions. [2022-11-16 12:13:19,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:19,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1081 transitions. [2022-11-16 12:13:19,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.11111111111111) internal successors, (1081), 9 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:19,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:19,238 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:19,238 INFO L175 Difference]: Start difference. First operand has 153 places, 145 transitions, 605 flow. Second operand 9 states and 1081 transitions. [2022-11-16 12:13:19,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 179 transitions, 928 flow [2022-11-16 12:13:19,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 179 transitions, 926 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:13:19,294 INFO L231 Difference]: Finished difference. Result has 167 places, 152 transitions, 719 flow [2022-11-16 12:13:19,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=719, PETRI_PLACES=167, PETRI_TRANSITIONS=152} [2022-11-16 12:13:19,297 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 23 predicate places. [2022-11-16 12:13:19,298 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 152 transitions, 719 flow [2022-11-16 12:13:19,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-16 12:13:19,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:19,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:19,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:13:19,299 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)] === [2022-11-16 12:13:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:19,300 INFO L85 PathProgramCache]: Analyzing trace with hash 923118761, now seen corresponding path program 1 times [2022-11-16 12:13:19,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:19,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753871611] [2022-11-16 12:13:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:19,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:19,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753871611] [2022-11-16 12:13:19,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753871611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:19,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:19,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:19,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168372197] [2022-11-16 12:13:19,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:19,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:19,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:19,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-16 12:13:19,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 152 transitions, 719 flow. Second operand has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:19,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:19,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-16 12:13:19,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:23,990 INFO L130 PetriNetUnfolder]: 10888/20250 cut-off events. [2022-11-16 12:13:23,991 INFO L131 PetriNetUnfolder]: For 64635/86077 co-relation queries the response was YES. [2022-11-16 12:13:24,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76731 conditions, 20250 events. 10888/20250 cut-off events. For 64635/86077 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 189868 event pairs, 617 based on Foata normal form. 908/20015 useless extension candidates. Maximal degree in co-relation 76643. Up to 5703 conditions per place. [2022-11-16 12:13:24,215 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 104 selfloop transitions, 36 changer transitions 17/269 dead transitions. [2022-11-16 12:13:24,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 269 transitions, 1863 flow [2022-11-16 12:13:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:13:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:13:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1576 transitions. [2022-11-16 12:13:24,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848961257720381 [2022-11-16 12:13:24,220 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1576 transitions. [2022-11-16 12:13:24,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1576 transitions. [2022-11-16 12:13:24,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:24,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1576 transitions. [2022-11-16 12:13:24,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.23076923076923) internal successors, (1576), 13 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:24,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:24,230 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:24,230 INFO L175 Difference]: Start difference. First operand has 167 places, 152 transitions, 719 flow. Second operand 13 states and 1576 transitions. [2022-11-16 12:13:24,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 269 transitions, 1863 flow [2022-11-16 12:13:24,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 269 transitions, 1848 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-16 12:13:24,678 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 991 flow [2022-11-16 12:13:24,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=991, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2022-11-16 12:13:24,679 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 40 predicate places. [2022-11-16 12:13:24,679 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 991 flow [2022-11-16 12:13:24,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:24,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:24,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:24,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:13:24,681 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)] === [2022-11-16 12:13:24,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1310499192, now seen corresponding path program 1 times [2022-11-16 12:13:24,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:24,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644450644] [2022-11-16 12:13:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:25,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:25,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644450644] [2022-11-16 12:13:25,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644450644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:25,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:25,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:13:25,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667689247] [2022-11-16 12:13:25,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:25,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:13:25,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-11-16 12:13:25,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 991 flow. Second operand has 8 states, 8 states have (on average 107.125) internal successors, (857), 8 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:25,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:25,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-11-16 12:13:25,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:28,208 INFO L130 PetriNetUnfolder]: 4429/15480 cut-off events. [2022-11-16 12:13:28,209 INFO L131 PetriNetUnfolder]: For 52611/58497 co-relation queries the response was YES. [2022-11-16 12:13:28,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57686 conditions, 15480 events. 4429/15480 cut-off events. For 52611/58497 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 207419 event pairs, 536 based on Foata normal form. 173/14588 useless extension candidates. Maximal degree in co-relation 57584. Up to 4409 conditions per place. [2022-11-16 12:13:28,395 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 89 selfloop transitions, 33 changer transitions 14/259 dead transitions. [2022-11-16 12:13:28,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 259 transitions, 1948 flow [2022-11-16 12:13:28,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:13:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1029 transitions. [2022-11-16 12:13:28,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8345498783454988 [2022-11-16 12:13:28,399 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1029 transitions. [2022-11-16 12:13:28,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1029 transitions. [2022-11-16 12:13:28,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:28,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1029 transitions. [2022-11-16 12:13:28,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.33333333333333) internal successors, (1029), 9 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,405 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:28,405 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 991 flow. Second operand 9 states and 1029 transitions. [2022-11-16 12:13:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 259 transitions, 1948 flow [2022-11-16 12:13:31,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 259 transitions, 1855 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-16 12:13:31,363 INFO L231 Difference]: Finished difference. Result has 195 places, 199 transitions, 1334 flow [2022-11-16 12:13:31,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1334, PETRI_PLACES=195, PETRI_TRANSITIONS=199} [2022-11-16 12:13:31,364 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 51 predicate places. [2022-11-16 12:13:31,365 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 199 transitions, 1334 flow [2022-11-16 12:13:31,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.125) internal successors, (857), 8 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:31,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:31,366 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:31,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:13:31,366 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)] === [2022-11-16 12:13:31,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:31,367 INFO L85 PathProgramCache]: Analyzing trace with hash 860868578, now seen corresponding path program 2 times [2022-11-16 12:13:31,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:31,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294686544] [2022-11-16 12:13:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:31,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:31,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:31,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294686544] [2022-11-16 12:13:31,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294686544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:31,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:31,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:13:31,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70064472] [2022-11-16 12:13:31,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:31,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:31,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:31,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:31,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:13:31,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-16 12:13:31,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 199 transitions, 1334 flow. Second operand has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:31,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:31,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-16 12:13:31,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:39,010 INFO L130 PetriNetUnfolder]: 18392/34385 cut-off events. [2022-11-16 12:13:39,010 INFO L131 PetriNetUnfolder]: For 188655/279004 co-relation queries the response was YES. [2022-11-16 12:13:39,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147700 conditions, 34385 events. 18392/34385 cut-off events. For 188655/279004 co-relation queries the response was YES. Maximal size of possible extension queue 2945. Compared 358671 event pairs, 440 based on Foata normal form. 2270/34470 useless extension candidates. Maximal degree in co-relation 147597. Up to 6288 conditions per place. [2022-11-16 12:13:39,676 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 110 selfloop transitions, 54 changer transitions 103/385 dead transitions. [2022-11-16 12:13:39,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 385 transitions, 3695 flow [2022-11-16 12:13:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:13:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:13:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1942 transitions. [2022-11-16 12:13:39,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8859489051094891 [2022-11-16 12:13:39,681 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1942 transitions. [2022-11-16 12:13:39,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1942 transitions. [2022-11-16 12:13:39,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:39,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1942 transitions. [2022-11-16 12:13:39,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.375) internal successors, (1942), 16 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:39,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:39,693 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:39,693 INFO L175 Difference]: Start difference. First operand has 195 places, 199 transitions, 1334 flow. Second operand 16 states and 1942 transitions. [2022-11-16 12:13:39,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 385 transitions, 3695 flow [2022-11-16 12:13:44,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 385 transitions, 3659 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-11-16 12:13:44,475 INFO L231 Difference]: Finished difference. Result has 213 places, 205 transitions, 1531 flow [2022-11-16 12:13:44,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1531, PETRI_PLACES=213, PETRI_TRANSITIONS=205} [2022-11-16 12:13:44,476 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 69 predicate places. [2022-11-16 12:13:44,476 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 205 transitions, 1531 flow [2022-11-16 12:13:44,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:44,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:44,477 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:44,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:13:44,477 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)] === [2022-11-16 12:13:44,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash 468738052, now seen corresponding path program 1 times [2022-11-16 12:13:44,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:44,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148593656] [2022-11-16 12:13:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:44,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:44,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:44,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148593656] [2022-11-16 12:13:44,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148593656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:44,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:44,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:13:44,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638457200] [2022-11-16 12:13:44,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:44,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:13:44,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:44,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:13:44,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:13:44,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-16 12:13:44,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 205 transitions, 1531 flow. Second operand has 9 states, 9 states have (on average 114.11111111111111) internal successors, (1027), 9 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:44,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:44,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-16 12:13:44,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:51,416 INFO L130 PetriNetUnfolder]: 16149/30816 cut-off events. [2022-11-16 12:13:51,417 INFO L131 PetriNetUnfolder]: For 198617/259356 co-relation queries the response was YES. [2022-11-16 12:13:52,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144550 conditions, 30816 events. 16149/30816 cut-off events. For 198617/259356 co-relation queries the response was YES. Maximal size of possible extension queue 2635. Compared 323145 event pairs, 706 based on Foata normal form. 1148/30084 useless extension candidates. Maximal degree in co-relation 144502. Up to 5309 conditions per place. [2022-11-16 12:13:52,099 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 79 selfloop transitions, 53 changer transitions 80/329 dead transitions. [2022-11-16 12:13:52,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 329 transitions, 3100 flow [2022-11-16 12:13:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:13:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:13:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2267 transitions. [2022-11-16 12:13:52,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8709181713407607 [2022-11-16 12:13:52,106 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2267 transitions. [2022-11-16 12:13:52,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2267 transitions. [2022-11-16 12:13:52,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:52,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2267 transitions. [2022-11-16 12:13:52,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 119.3157894736842) internal successors, (2267), 19 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:52,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 137.0) internal successors, (2740), 20 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:52,121 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 137.0) internal successors, (2740), 20 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:52,121 INFO L175 Difference]: Start difference. First operand has 213 places, 205 transitions, 1531 flow. Second operand 19 states and 2267 transitions. [2022-11-16 12:13:52,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 329 transitions, 3100 flow [2022-11-16 12:14:06,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 329 transitions, 2563 flow, removed 206 selfloop flow, removed 22 redundant places. [2022-11-16 12:14:06,442 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 1208 flow [2022-11-16 12:14:06,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1208, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2022-11-16 12:14:06,443 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 63 predicate places. [2022-11-16 12:14:06,443 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 1208 flow [2022-11-16 12:14:06,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.11111111111111) internal successors, (1027), 9 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:06,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:06,444 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:06,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:14:06,444 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)] === [2022-11-16 12:14:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:06,445 INFO L85 PathProgramCache]: Analyzing trace with hash -242113606, now seen corresponding path program 1 times [2022-11-16 12:14:06,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:06,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292595199] [2022-11-16 12:14:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:06,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:08,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:08,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292595199] [2022-11-16 12:14:08,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292595199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:08,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:08,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:14:08,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550684048] [2022-11-16 12:14:08,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:08,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:14:08,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:08,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:14:08,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:14:08,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 137 [2022-11-16 12:14:08,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 195 transitions, 1208 flow. Second operand has 15 states, 15 states have (on average 106.8) internal successors, (1602), 15 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:08,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:08,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 137 [2022-11-16 12:14:08,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:11,615 INFO L130 PetriNetUnfolder]: 4715/17584 cut-off events. [2022-11-16 12:14:11,616 INFO L131 PetriNetUnfolder]: For 40051/44223 co-relation queries the response was YES. [2022-11-16 12:14:11,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56102 conditions, 17584 events. 4715/17584 cut-off events. For 40051/44223 co-relation queries the response was YES. Maximal size of possible extension queue 2399. Compared 260671 event pairs, 128 based on Foata normal form. 24/16355 useless extension candidates. Maximal degree in co-relation 55991. Up to 2058 conditions per place. [2022-11-16 12:14:11,879 INFO L137 encePairwiseOnDemand]: 123/137 looper letters, 37 selfloop transitions, 19 changer transitions 5/223 dead transitions. [2022-11-16 12:14:11,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 223 transitions, 1529 flow [2022-11-16 12:14:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:14:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:14:11,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1520 transitions. [2022-11-16 12:14:11,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7924921793534933 [2022-11-16 12:14:11,883 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1520 transitions. [2022-11-16 12:14:11,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1520 transitions. [2022-11-16 12:14:11,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:11,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1520 transitions. [2022-11-16 12:14:11,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.57142857142857) internal successors, (1520), 14 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:11,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:11,891 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:11,891 INFO L175 Difference]: Start difference. First operand has 207 places, 195 transitions, 1208 flow. Second operand 14 states and 1520 transitions. [2022-11-16 12:14:11,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 223 transitions, 1529 flow [2022-11-16 12:14:15,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 223 transitions, 1354 flow, removed 46 selfloop flow, removed 17 redundant places. [2022-11-16 12:14:15,457 INFO L231 Difference]: Finished difference. Result has 209 places, 209 transitions, 1270 flow [2022-11-16 12:14:15,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1270, PETRI_PLACES=209, PETRI_TRANSITIONS=209} [2022-11-16 12:14:15,459 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 65 predicate places. [2022-11-16 12:14:15,459 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 209 transitions, 1270 flow [2022-11-16 12:14:15,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 106.8) internal successors, (1602), 15 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:15,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:15,460 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:15,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:14:15,461 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)] === [2022-11-16 12:14:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:15,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1981652878, now seen corresponding path program 2 times [2022-11-16 12:14:15,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:15,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934127372] [2022-11-16 12:14:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:15,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:15,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:15,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934127372] [2022-11-16 12:14:15,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934127372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:15,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:15,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:14:15,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074537399] [2022-11-16 12:14:15,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:15,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:14:15,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:15,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:14:15,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:14:15,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 137 [2022-11-16 12:14:15,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 209 transitions, 1270 flow. Second operand has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:15,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:15,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 137 [2022-11-16 12:14:15,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:19,832 INFO L130 PetriNetUnfolder]: 6272/23310 cut-off events. [2022-11-16 12:14:19,832 INFO L131 PetriNetUnfolder]: For 39008/41006 co-relation queries the response was YES. [2022-11-16 12:14:20,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65673 conditions, 23310 events. 6272/23310 cut-off events. For 39008/41006 co-relation queries the response was YES. Maximal size of possible extension queue 3170. Compared 362033 event pairs, 123 based on Foata normal form. 40/21793 useless extension candidates. Maximal degree in co-relation 65632. Up to 2864 conditions per place. [2022-11-16 12:14:20,260 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 22 selfloop transitions, 1 changer transitions 46/226 dead transitions. [2022-11-16 12:14:20,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 226 transitions, 1489 flow [2022-11-16 12:14:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:14:20,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:14:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 826 transitions. [2022-11-16 12:14:20,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8613138686131386 [2022-11-16 12:14:20,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 826 transitions. [2022-11-16 12:14:20,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 826 transitions. [2022-11-16 12:14:20,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:20,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 826 transitions. [2022-11-16 12:14:20,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:20,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:20,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:20,271 INFO L175 Difference]: Start difference. First operand has 209 places, 209 transitions, 1270 flow. Second operand 7 states and 826 transitions. [2022-11-16 12:14:20,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 226 transitions, 1489 flow [2022-11-16 12:14:29,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 226 transitions, 1471 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-11-16 12:14:29,254 INFO L231 Difference]: Finished difference. Result has 211 places, 178 transitions, 914 flow [2022-11-16 12:14:29,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=914, PETRI_PLACES=211, PETRI_TRANSITIONS=178} [2022-11-16 12:14:29,255 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 67 predicate places. [2022-11-16 12:14:29,255 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 178 transitions, 914 flow [2022-11-16 12:14:29,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:29,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:29,256 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:29,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:14:29,256 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)] === [2022-11-16 12:14:29,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:29,256 INFO L85 PathProgramCache]: Analyzing trace with hash 207993514, now seen corresponding path program 3 times [2022-11-16 12:14:29,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:29,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273978546] [2022-11-16 12:14:29,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:29,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat