./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/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_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/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_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/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 d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --- 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 11:04:27,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:04:27,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:04:27,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:04:27,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:04:27,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:04:27,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:04:27,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:04:27,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:04:27,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:04:27,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:04:27,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:04:27,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:04:27,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:04:27,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:04:27,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:04:27,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:04:27,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:04:27,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:04:27,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:04:27,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:04:27,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:04:27,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:04:27,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:04:27,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:04:27,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:04:27,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:04:27,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:04:27,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:04:27,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:04:27,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:04:27,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:04:27,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:04:27,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:04:27,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:04:27,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:04:27,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:04:27,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:04:27,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:04:27,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:04:27,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:04:27,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:04:27,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:04:27,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:04:27,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:04:27,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:04:27,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:04:27,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:04:27,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:04:27,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:04:27,523 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:04:27,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:04:27,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:04:27,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:04:27,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:04:27,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:04:27,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:04:27,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:04:27,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:04:27,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:04:27,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:04:27,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:04:27,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:04:27,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:04:27,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:04:27,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:04:27,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:27,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:04:27,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:04:27,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:04:27,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:04:27,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:04:27,530 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:04:27,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:04:27,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:04:27,531 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_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 [2022-11-16 11:04:27,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:04:27,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:04:27,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:04:27,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:04:27,875 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:04:27,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-16 11:04:27,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/data/389c70271/7dda3a86e91146fbab3bf46ece3da290/FLAGfd96a10fa [2022-11-16 11:04:28,585 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:04:28,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-16 11:04:28,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/data/389c70271/7dda3a86e91146fbab3bf46ece3da290/FLAGfd96a10fa [2022-11-16 11:04:28,963 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/data/389c70271/7dda3a86e91146fbab3bf46ece3da290 [2022-11-16 11:04:28,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:04:28,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:04:28,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:28,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:04:28,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:04:28,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:28" (1/1) ... [2022-11-16 11:04:28,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd30be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:28, skipping insertion in model container [2022-11-16 11:04:28,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:28" (1/1) ... [2022-11-16 11:04:28,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:04:29,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:04:29,271 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_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-16 11:04:29,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:29,292 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:04:29,324 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_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-16 11:04:29,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:29,346 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:04:29,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29 WrapperNode [2022-11-16 11:04:29,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:29,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:29,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:04:29,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:04:29,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,405 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 245 [2022-11-16 11:04:29,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:29,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:04:29,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:04:29,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:04:29,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:04:29,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:04:29,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:04:29,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:04:29,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (1/1) ... [2022-11-16 11:04:29,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:29,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:29,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:04:29,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:04:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:04:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:04:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:04:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:04:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:04:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:04:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:04:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:04:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:04:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:04:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:04:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:04:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:04:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:04:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:04:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:04:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:04:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:04:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:04:29,549 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 11:04:29,701 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:04:29,704 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:04:30,299 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:04:30,663 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:04:30,671 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:04:30,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:04:30 BoogieIcfgContainer [2022-11-16 11:04:30,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:04:30,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:04:30,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:04:30,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:04:30,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:04:28" (1/3) ... [2022-11-16 11:04:30,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccb02ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:04:30, skipping insertion in model container [2022-11-16 11:04:30,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:29" (2/3) ... [2022-11-16 11:04:30,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccb02ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:04:30, skipping insertion in model container [2022-11-16 11:04:30,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:04:30" (3/3) ... [2022-11-16 11:04:30,689 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2022-11-16 11:04:30,700 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:04:30,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:04:30,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:04:30,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:04:30,898 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-11-16 11:04:30,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 205 transitions, 454 flow [2022-11-16 11:04:31,077 INFO L130 PetriNetUnfolder]: 14/190 cut-off events. [2022-11-16 11:04:31,078 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:04:31,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 190 events. 14/190 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 160 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-11-16 11:04:31,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 205 transitions, 454 flow [2022-11-16 11:04:31,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 181 transitions, 392 flow [2022-11-16 11:04:31,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:04:31,113 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;@67f9d8d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:04:31,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 11:04:31,205 INFO L130 PetriNetUnfolder]: 14/180 cut-off events. [2022-11-16 11:04:31,211 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:04:31,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:31,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:31,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:31,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1905100844, now seen corresponding path program 1 times [2022-11-16 11:04:31,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:31,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025001859] [2022-11-16 11:04:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:31,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:31,582 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 11:04:31,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:31,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025001859] [2022-11-16 11:04:31,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025001859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:31,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:31,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:04:31,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63373510] [2022-11-16 11:04:31,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:31,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:04:31,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:04:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:04:31,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 207 [2022-11-16 11:04:31,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 181 transitions, 392 flow. Second operand has 2 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 11:04:31,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:31,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 207 [2022-11-16 11:04:31,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:32,034 INFO L130 PetriNetUnfolder]: 191/594 cut-off events. [2022-11-16 11:04:32,034 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-16 11:04:32,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 594 events. 191/594 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2258 event pairs, 111 based on Foata normal form. 64/606 useless extension candidates. Maximal degree in co-relation 865. Up to 286 conditions per place. [2022-11-16 11:04:32,049 INFO L137 encePairwiseOnDemand]: 199/207 looper letters, 21 selfloop transitions, 0 changer transitions 4/173 dead transitions. [2022-11-16 11:04:32,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 173 transitions, 418 flow [2022-11-16 11:04:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:04:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:04:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 375 transitions. [2022-11-16 11:04:32,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9057971014492754 [2022-11-16 11:04:32,076 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 375 transitions. [2022-11-16 11:04:32,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 375 transitions. [2022-11-16 11:04:32,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:32,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 375 transitions. [2022-11-16 11:04:32,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 187.5) internal successors, (375), 2 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 11:04:32,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states 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 11:04:32,102 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states 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 11:04:32,104 INFO L175 Difference]: Start difference. First operand has 180 places, 181 transitions, 392 flow. Second operand 2 states and 375 transitions. [2022-11-16 11:04:32,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 173 transitions, 418 flow [2022-11-16 11:04:32,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 398 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 11:04:32,120 INFO L231 Difference]: Finished difference. Result has 173 places, 169 transitions, 348 flow [2022-11-16 11:04:32,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=348, PETRI_PLACES=173, PETRI_TRANSITIONS=169} [2022-11-16 11:04:32,131 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -7 predicate places. [2022-11-16 11:04:32,132 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 169 transitions, 348 flow [2022-11-16 11:04:32,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 11:04:32,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:32,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:32,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:04:32,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash -210301196, now seen corresponding path program 1 times [2022-11-16 11:04:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:32,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73370907] [2022-11-16 11:04:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:32,860 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 11:04:32,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:32,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73370907] [2022-11-16 11:04:32,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73370907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:32,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:32,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:04:32,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218525271] [2022-11-16 11:04:32,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:32,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:04:32,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:32,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:04:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:04:32,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 207 [2022-11-16 11:04:32,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 169 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 11:04:32,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:32,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 207 [2022-11-16 11:04:32,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:33,612 INFO L130 PetriNetUnfolder]: 481/1385 cut-off events. [2022-11-16 11:04:33,612 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-16 11:04:33,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 1385 events. 481/1385 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8488 event pairs, 149 based on Foata normal form. 1/1264 useless extension candidates. Maximal degree in co-relation 2209. Up to 353 conditions per place. [2022-11-16 11:04:33,629 INFO L137 encePairwiseOnDemand]: 196/207 looper letters, 69 selfloop transitions, 10 changer transitions 4/211 dead transitions. [2022-11-16 11:04:33,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 211 transitions, 614 flow [2022-11-16 11:04:33,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:04:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:04:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 978 transitions. [2022-11-16 11:04:33,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7874396135265701 [2022-11-16 11:04:33,636 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 978 transitions. [2022-11-16 11:04:33,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 978 transitions. [2022-11-16 11:04:33,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:33,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 978 transitions. [2022-11-16 11:04:33,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 11:04:33,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states 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 11:04:33,649 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states 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 11:04:33,649 INFO L175 Difference]: Start difference. First operand has 173 places, 169 transitions, 348 flow. Second operand 6 states and 978 transitions. [2022-11-16 11:04:33,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 211 transitions, 614 flow [2022-11-16 11:04:33,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 211 transitions, 614 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:04:33,660 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 407 flow [2022-11-16 11:04:33,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-16 11:04:33,663 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -2 predicate places. [2022-11-16 11:04:33,663 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 407 flow [2022-11-16 11:04:33,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 11:04:33,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:33,664 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:33,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:04:33,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:33,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:33,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1233587206, now seen corresponding path program 2 times [2022-11-16 11:04:33,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:33,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50149317] [2022-11-16 11:04:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:33,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:34,153 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 11:04:34,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:34,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50149317] [2022-11-16 11:04:34,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50149317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:34,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:34,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:04:34,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184805327] [2022-11-16 11:04:34,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:34,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:04:34,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:34,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:04:34,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:04:34,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 207 [2022-11-16 11:04:34,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 407 flow. Second operand has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 11:04:34,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:34,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 207 [2022-11-16 11:04:34,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:34,838 INFO L130 PetriNetUnfolder]: 703/1924 cut-off events. [2022-11-16 11:04:34,839 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2022-11-16 11:04:34,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3539 conditions, 1924 events. 703/1924 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12969 event pairs, 240 based on Foata normal form. 1/1743 useless extension candidates. Maximal degree in co-relation 3531. Up to 590 conditions per place. [2022-11-16 11:04:34,860 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 75 selfloop transitions, 10 changer transitions 4/217 dead transitions. [2022-11-16 11:04:34,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 217 transitions, 712 flow [2022-11-16 11:04:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:04:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:04:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 978 transitions. [2022-11-16 11:04:34,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7874396135265701 [2022-11-16 11:04:34,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 978 transitions. [2022-11-16 11:04:34,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 978 transitions. [2022-11-16 11:04:34,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:34,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 978 transitions. [2022-11-16 11:04:34,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 11:04:34,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states 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 11:04:34,875 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states 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 11:04:34,875 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 407 flow. Second operand 6 states and 978 transitions. [2022-11-16 11:04:34,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 217 transitions, 712 flow [2022-11-16 11:04:34,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 217 transitions, 702 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-16 11:04:34,886 INFO L231 Difference]: Finished difference. Result has 183 places, 180 transitions, 473 flow [2022-11-16 11:04:34,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=183, PETRI_TRANSITIONS=180} [2022-11-16 11:04:34,889 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 3 predicate places. [2022-11-16 11:04:34,890 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 180 transitions, 473 flow [2022-11-16 11:04:34,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 11:04:34,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:34,891 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:34,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:04:34,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1042855993, now seen corresponding path program 1 times [2022-11-16 11:04:34,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:34,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947171926] [2022-11-16 11:04:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:35,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:35,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947171926] [2022-11-16 11:04:35,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947171926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:35,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:35,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:04:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605644488] [2022-11-16 11:04:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:35,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:04:35,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:35,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:04:35,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:04:35,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 207 [2022-11-16 11:04:35,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 180 transitions, 473 flow. Second operand has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 11:04:35,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:35,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 207 [2022-11-16 11:04:35,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:36,277 INFO L130 PetriNetUnfolder]: 1018/2906 cut-off events. [2022-11-16 11:04:36,278 INFO L131 PetriNetUnfolder]: For 1384/1384 co-relation queries the response was YES. [2022-11-16 11:04:36,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 2906 events. 1018/2906 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 22008 event pairs, 398 based on Foata normal form. 54/2671 useless extension candidates. Maximal degree in co-relation 5634. Up to 777 conditions per place. [2022-11-16 11:04:36,305 INFO L137 encePairwiseOnDemand]: 199/207 looper letters, 107 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2022-11-16 11:04:36,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 246 transitions, 967 flow [2022-11-16 11:04:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:04:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:04:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1339 transitions. [2022-11-16 11:04:36,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8085748792270532 [2022-11-16 11:04:36,315 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1339 transitions. [2022-11-16 11:04:36,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1339 transitions. [2022-11-16 11:04:36,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:36,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1339 transitions. [2022-11-16 11:04:36,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.375) internal successors, (1339), 8 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:36,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states 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 11:04:36,328 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states 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 11:04:36,328 INFO L175 Difference]: Start difference. First operand has 183 places, 180 transitions, 473 flow. Second operand 8 states and 1339 transitions. [2022-11-16 11:04:36,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 246 transitions, 967 flow [2022-11-16 11:04:36,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 246 transitions, 961 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 11:04:36,345 INFO L231 Difference]: Finished difference. Result has 190 places, 185 transitions, 529 flow [2022-11-16 11:04:36,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=190, PETRI_TRANSITIONS=185} [2022-11-16 11:04:36,348 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 10 predicate places. [2022-11-16 11:04:36,348 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 185 transitions, 529 flow [2022-11-16 11:04:36,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 11:04:36,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:36,350 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:36,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:04:36,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:36,351 INFO L85 PathProgramCache]: Analyzing trace with hash 154479608, now seen corresponding path program 1 times [2022-11-16 11:04:36,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:36,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082631033] [2022-11-16 11:04:36,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:36,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:36,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082631033] [2022-11-16 11:04:36,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082631033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:36,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:36,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:04:36,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632734694] [2022-11-16 11:04:36,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:36,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:04:36,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:04:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:04:36,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 207 [2022-11-16 11:04:36,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 185 transitions, 529 flow. Second operand has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 11:04:36,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:36,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 207 [2022-11-16 11:04:36,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:37,596 INFO L130 PetriNetUnfolder]: 723/2409 cut-off events. [2022-11-16 11:04:37,597 INFO L131 PetriNetUnfolder]: For 1558/1558 co-relation queries the response was YES. [2022-11-16 11:04:37,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4809 conditions, 2409 events. 723/2409 cut-off events. For 1558/1558 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 17702 event pairs, 206 based on Foata normal form. 93/2306 useless extension candidates. Maximal degree in co-relation 4795. Up to 609 conditions per place. [2022-11-16 11:04:37,617 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 67 selfloop transitions, 6 changer transitions 20/224 dead transitions. [2022-11-16 11:04:37,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 224 transitions, 894 flow [2022-11-16 11:04:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:04:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:04:37,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1323 transitions. [2022-11-16 11:04:37,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7989130434782609 [2022-11-16 11:04:37,622 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1323 transitions. [2022-11-16 11:04:37,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1323 transitions. [2022-11-16 11:04:37,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:37,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1323 transitions. [2022-11-16 11:04:37,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 11:04:37,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states 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 11:04:37,631 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states 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 11:04:37,632 INFO L175 Difference]: Start difference. First operand has 190 places, 185 transitions, 529 flow. Second operand 8 states and 1323 transitions. [2022-11-16 11:04:37,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 224 transitions, 894 flow [2022-11-16 11:04:37,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 224 transitions, 891 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:04:37,640 INFO L231 Difference]: Finished difference. Result has 199 places, 183 transitions, 531 flow [2022-11-16 11:04:37,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=531, PETRI_PLACES=199, PETRI_TRANSITIONS=183} [2022-11-16 11:04:37,644 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 19 predicate places. [2022-11-16 11:04:37,644 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 183 transitions, 531 flow [2022-11-16 11:04:37,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 11:04:37,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:37,646 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:37,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:04:37,646 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash -551813700, now seen corresponding path program 1 times [2022-11-16 11:04:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:37,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113012258] [2022-11-16 11:04:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:38,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:38,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113012258] [2022-11-16 11:04:38,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113012258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:38,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964073105] [2022-11-16 11:04:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:38,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:38,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:38,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:38,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:04:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:38,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:04:38,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:38,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:39,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964073105] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:04:39,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:04:39,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:04:39,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857397166] [2022-11-16 11:04:39,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:04:39,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:04:39,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:39,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:04:39,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:04:39,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-16 11:04:39,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 183 transitions, 531 flow. Second operand has 18 states, 18 states have (on average 158.05555555555554) internal successors, (2845), 18 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states 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 11:04:39,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:39,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-16 11:04:39,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:40,297 INFO L130 PetriNetUnfolder]: 931/2874 cut-off events. [2022-11-16 11:04:40,297 INFO L131 PetriNetUnfolder]: For 2862/2862 co-relation queries the response was YES. [2022-11-16 11:04:40,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6656 conditions, 2874 events. 931/2874 cut-off events. For 2862/2862 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 22359 event pairs, 320 based on Foata normal form. 54/2659 useless extension candidates. Maximal degree in co-relation 6638. Up to 733 conditions per place. [2022-11-16 11:04:40,328 INFO L137 encePairwiseOnDemand]: 194/207 looper letters, 114 selfloop transitions, 15 changer transitions 0/259 dead transitions. [2022-11-16 11:04:40,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 259 transitions, 1152 flow [2022-11-16 11:04:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:04:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:04:40,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2112 transitions. [2022-11-16 11:04:40,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7848383500557413 [2022-11-16 11:04:40,335 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2112 transitions. [2022-11-16 11:04:40,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2112 transitions. [2022-11-16 11:04:40,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:40,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2112 transitions. [2022-11-16 11:04:40,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 162.46153846153845) internal successors, (2112), 13 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states 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 11:04:40,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 207.0) internal successors, (2898), 14 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states 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 11:04:40,351 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 207.0) internal successors, (2898), 14 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states 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 11:04:40,352 INFO L175 Difference]: Start difference. First operand has 199 places, 183 transitions, 531 flow. Second operand 13 states and 2112 transitions. [2022-11-16 11:04:40,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 259 transitions, 1152 flow [2022-11-16 11:04:40,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 259 transitions, 1099 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-11-16 11:04:40,372 INFO L231 Difference]: Finished difference. Result has 204 places, 191 transitions, 601 flow [2022-11-16 11:04:40,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=601, PETRI_PLACES=204, PETRI_TRANSITIONS=191} [2022-11-16 11:04:40,376 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 24 predicate places. [2022-11-16 11:04:40,376 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 191 transitions, 601 flow [2022-11-16 11:04:40,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 158.05555555555554) internal successors, (2845), 18 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states 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 11:04:40,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:40,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:40,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:40,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:40,586 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:40,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:40,586 INFO L85 PathProgramCache]: Analyzing trace with hash 710257851, now seen corresponding path program 1 times [2022-11-16 11:04:40,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:40,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333613258] [2022-11-16 11:04:40,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:40,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:41,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:41,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333613258] [2022-11-16 11:04:41,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333613258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:41,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621781617] [2022-11-16 11:04:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:41,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:41,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:41,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:41,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:04:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:04:41,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:41,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:41,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621781617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:04:41,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:04:41,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:04:41,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823318530] [2022-11-16 11:04:41,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:04:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:04:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:04:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:04:41,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-16 11:04:41,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 191 transitions, 601 flow. Second operand has 18 states, 18 states have (on average 158.16666666666666) internal successors, (2847), 18 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 11:04:41,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:41,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-16 11:04:41,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:42,801 INFO L130 PetriNetUnfolder]: 723/2424 cut-off events. [2022-11-16 11:04:42,801 INFO L131 PetriNetUnfolder]: For 2035/2035 co-relation queries the response was YES. [2022-11-16 11:04:42,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5367 conditions, 2424 events. 723/2424 cut-off events. For 2035/2035 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 17871 event pairs, 191 based on Foata normal form. 16/2235 useless extension candidates. Maximal degree in co-relation 5348. Up to 609 conditions per place. [2022-11-16 11:04:42,820 INFO L137 encePairwiseOnDemand]: 191/207 looper letters, 65 selfloop transitions, 14 changer transitions 22/231 dead transitions. [2022-11-16 11:04:42,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 231 transitions, 1002 flow [2022-11-16 11:04:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:04:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:04:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2249 transitions. [2022-11-16 11:04:42,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7760524499654935 [2022-11-16 11:04:42,827 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2249 transitions. [2022-11-16 11:04:42,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2249 transitions. [2022-11-16 11:04:42,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:42,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2249 transitions. [2022-11-16 11:04:42,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 160.64285714285714) internal successors, (2249), 14 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states 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 11:04:42,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states 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 11:04:42,843 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states 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 11:04:42,844 INFO L175 Difference]: Start difference. First operand has 204 places, 191 transitions, 601 flow. Second operand 14 states and 2249 transitions. [2022-11-16 11:04:42,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 231 transitions, 1002 flow [2022-11-16 11:04:42,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 231 transitions, 987 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-16 11:04:42,853 INFO L231 Difference]: Finished difference. Result has 215 places, 187 transitions, 587 flow [2022-11-16 11:04:42,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=587, PETRI_PLACES=215, PETRI_TRANSITIONS=187} [2022-11-16 11:04:42,854 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 35 predicate places. [2022-11-16 11:04:42,854 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 187 transitions, 587 flow [2022-11-16 11:04:42,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 158.16666666666666) internal successors, (2847), 18 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 11:04:42,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:42,857 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:42,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:43,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:04:43,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:43,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash -939534669, now seen corresponding path program 1 times [2022-11-16 11:04:43,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:43,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228659398] [2022-11-16 11:04:43,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:43,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:04:43,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228659398] [2022-11-16 11:04:43,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228659398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589837751] [2022-11-16 11:04:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:43,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:43,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:43,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:43,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:04:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:43,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:04:43,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:04:44,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:04:44,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589837751] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:44,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:04:44,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-11-16 11:04:44,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244781745] [2022-11-16 11:04:44,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:44,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:04:44,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:04:44,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:04:44,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-16 11:04:44,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 187 transitions, 587 flow. Second operand has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states 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 11:04:44,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:44,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-16 11:04:44,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:45,080 INFO L130 PetriNetUnfolder]: 493/1507 cut-off events. [2022-11-16 11:04:45,080 INFO L131 PetriNetUnfolder]: For 1838/1838 co-relation queries the response was YES. [2022-11-16 11:04:45,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3718 conditions, 1507 events. 493/1507 cut-off events. For 1838/1838 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9493 event pairs, 213 based on Foata normal form. 31/1408 useless extension candidates. Maximal degree in co-relation 3697. Up to 694 conditions per place. [2022-11-16 11:04:45,097 INFO L137 encePairwiseOnDemand]: 195/207 looper letters, 58 selfloop transitions, 11 changer transitions 0/199 dead transitions. [2022-11-16 11:04:45,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 199 transitions, 790 flow [2022-11-16 11:04:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:04:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:04:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1605 transitions. [2022-11-16 11:04:45,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7753623188405797 [2022-11-16 11:04:45,104 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1605 transitions. [2022-11-16 11:04:45,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1605 transitions. [2022-11-16 11:04:45,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:45,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1605 transitions. [2022-11-16 11:04:45,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 11:04:45,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:45,116 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:45,116 INFO L175 Difference]: Start difference. First operand has 215 places, 187 transitions, 587 flow. Second operand 10 states and 1605 transitions. [2022-11-16 11:04:45,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 199 transitions, 790 flow [2022-11-16 11:04:45,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 199 transitions, 740 flow, removed 13 selfloop flow, removed 14 redundant places. [2022-11-16 11:04:45,127 INFO L231 Difference]: Finished difference. Result has 208 places, 190 transitions, 595 flow [2022-11-16 11:04:45,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=595, PETRI_PLACES=208, PETRI_TRANSITIONS=190} [2022-11-16 11:04:45,128 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 28 predicate places. [2022-11-16 11:04:45,129 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 190 transitions, 595 flow [2022-11-16 11:04:45,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states 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 11:04:45,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:45,130 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:45,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:45,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:45,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:45,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:45,337 INFO L85 PathProgramCache]: Analyzing trace with hash 214997585, now seen corresponding path program 2 times [2022-11-16 11:04:45,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:45,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187986390] [2022-11-16 11:04:45,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:45,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:04:45,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:45,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187986390] [2022-11-16 11:04:45,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187986390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:45,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295482629] [2022-11-16 11:04:45,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:04:45,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:45,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:45,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:45,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:04:46,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:04:46,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:04:46,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:04:46,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:04:46,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:04:46,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295482629] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:46,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:04:46,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-11-16 11:04:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730324545] [2022-11-16 11:04:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:46,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:04:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:04:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:04:46,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-16 11:04:46,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 190 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states 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 11:04:46,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:46,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-16 11:04:46,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:47,160 INFO L130 PetriNetUnfolder]: 419/1263 cut-off events. [2022-11-16 11:04:47,160 INFO L131 PetriNetUnfolder]: For 1221/1221 co-relation queries the response was YES. [2022-11-16 11:04:47,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1263 events. 419/1263 cut-off events. For 1221/1221 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7418 event pairs, 169 based on Foata normal form. 38/1188 useless extension candidates. Maximal degree in co-relation 3077. Up to 542 conditions per place. [2022-11-16 11:04:47,172 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 74 selfloop transitions, 10 changer transitions 0/214 dead transitions. [2022-11-16 11:04:47,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 214 transitions, 888 flow [2022-11-16 11:04:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:04:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:04:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1611 transitions. [2022-11-16 11:04:47,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7782608695652173 [2022-11-16 11:04:47,177 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1611 transitions. [2022-11-16 11:04:47,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1611 transitions. [2022-11-16 11:04:47,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:47,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1611 transitions. [2022-11-16 11:04:47,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.1) internal successors, (1611), 10 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states 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 11:04:47,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:47,188 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:47,188 INFO L175 Difference]: Start difference. First operand has 208 places, 190 transitions, 595 flow. Second operand 10 states and 1611 transitions. [2022-11-16 11:04:47,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 214 transitions, 888 flow [2022-11-16 11:04:47,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 214 transitions, 857 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-11-16 11:04:47,196 INFO L231 Difference]: Finished difference. Result has 211 places, 191 transitions, 600 flow [2022-11-16 11:04:47,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=600, PETRI_PLACES=211, PETRI_TRANSITIONS=191} [2022-11-16 11:04:47,197 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 31 predicate places. [2022-11-16 11:04:47,198 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 191 transitions, 600 flow [2022-11-16 11:04:47,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states 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 11:04:47,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:47,200 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:47,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:47,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:47,406 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash -413873644, now seen corresponding path program 1 times [2022-11-16 11:04:47,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:47,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079518896] [2022-11-16 11:04:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:47,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:04:49,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:49,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079518896] [2022-11-16 11:04:49,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079518896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:49,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298827658] [2022-11-16 11:04:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:49,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:49,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:49,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:04:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 11:04:49,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:49,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 11:04:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:04:50,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:50,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:04:50,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 16 [2022-11-16 11:04:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:04:50,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298827658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:04:50,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:04:50,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 22 [2022-11-16 11:04:50,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726031967] [2022-11-16 11:04:50,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:04:50,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:04:50,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:04:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:04:50,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 207 [2022-11-16 11:04:50,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 191 transitions, 600 flow. Second operand has 22 states, 22 states have (on average 122.36363636363636) internal successors, (2692), 22 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states 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 11:04:50,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:50,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 207 [2022-11-16 11:04:50,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:54,790 INFO L130 PetriNetUnfolder]: 5301/10684 cut-off events. [2022-11-16 11:04:54,790 INFO L131 PetriNetUnfolder]: For 12073/12073 co-relation queries the response was YES. [2022-11-16 11:04:54,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28853 conditions, 10684 events. 5301/10684 cut-off events. For 12073/12073 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 87959 event pairs, 1109 based on Foata normal form. 2/10083 useless extension candidates. Maximal degree in co-relation 28833. Up to 3397 conditions per place. [2022-11-16 11:04:54,940 INFO L137 encePairwiseOnDemand]: 187/207 looper letters, 272 selfloop transitions, 77 changer transitions 8/461 dead transitions. [2022-11-16 11:04:54,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 461 transitions, 2481 flow [2022-11-16 11:04:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:04:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-16 11:04:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3620 transitions. [2022-11-16 11:04:54,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6245686680469289 [2022-11-16 11:04:54,950 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3620 transitions. [2022-11-16 11:04:54,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3620 transitions. [2022-11-16 11:04:54,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:54,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3620 transitions. [2022-11-16 11:04:54,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 129.28571428571428) internal successors, (3620), 28 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states 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 11:04:54,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 207.0) internal successors, (6003), 29 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states 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 11:04:54,975 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 207.0) internal successors, (6003), 29 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states 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 11:04:54,975 INFO L175 Difference]: Start difference. First operand has 211 places, 191 transitions, 600 flow. Second operand 28 states and 3620 transitions. [2022-11-16 11:04:54,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 461 transitions, 2481 flow [2022-11-16 11:04:55,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 461 transitions, 2448 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 11:04:55,009 INFO L231 Difference]: Finished difference. Result has 246 places, 260 transitions, 1251 flow [2022-11-16 11:04:55,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1251, PETRI_PLACES=246, PETRI_TRANSITIONS=260} [2022-11-16 11:04:55,011 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 66 predicate places. [2022-11-16 11:04:55,011 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 260 transitions, 1251 flow [2022-11-16 11:04:55,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 122.36363636363636) internal successors, (2692), 22 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states 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 11:04:55,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:55,013 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:55,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:55,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:04:55,220 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:04:55,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:55,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1568331166, now seen corresponding path program 2 times [2022-11-16 11:04:55,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:55,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130750867] [2022-11-16 11:04:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:55,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:04:57,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:57,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130750867] [2022-11-16 11:04:57,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130750867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:57,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137425694] [2022-11-16 11:04:57,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:04:57,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:57,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:57,380 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:57,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:04:57,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:04:57,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:04:57,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-16 11:04:57,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:58,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:04:58,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:04:58,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:04:59,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:59,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:04:59,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:59,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:04:59,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 11:04:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:59,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:59,849 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_386 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_386 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) c_~s_2~0))))) is different from false [2022-11-16 11:04:59,966 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) c_~s_2~0))) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))))) is different from false [2022-11-16 11:05:00,015 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0))) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))))) is different from false [2022-11-16 11:05:00,507 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (let ((.cse1 (select (select |c_#memory_int| c_~X_0~0.base) .cse0))) (and (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) (+ .cse1 1))) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= .cse1 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0)))))) is different from false [2022-11-16 11:05:00,546 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (let ((.cse1 (select (select |c_#memory_int| c_~X_0~0.base) .cse0))) (and (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_27| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_27|)) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |v_thread1Thread1of1ForFork3_~#t3~0.base_27| v_ArrVal_386) c_~X_0~0.base) .cse0) (+ .cse1 1))))) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_27| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_27|)) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= .cse1 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |v_thread1Thread1of1ForFork3_~#t3~0.base_27| v_ArrVal_386) c_~X_0~0.base) .cse0)))))))) is different from false [2022-11-16 11:05:28,819 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:05:28,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 48 [2022-11-16 11:05:28,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2838 treesize of output 2622 [2022-11-16 11:05:28,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2574 treesize of output 2318 [2022-11-16 11:05:29,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2318 treesize of output 2174 [2022-11-16 11:05:29,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2174 treesize of output 1918 [2022-11-16 11:05:29,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1918 treesize of output 1790 [2022-11-16 11:06:18,635 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:06:18,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 1 [2022-11-16 11:06:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 11:06:31,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137425694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:06:31,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:06:31,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29, 29] total 66 [2022-11-16 11:06:31,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638363331] [2022-11-16 11:06:31,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:06:31,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-16 11:06:31,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-16 11:06:31,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=3320, Unknown=65, NotChecked=610, Total=4290 [2022-11-16 11:06:31,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 207 [2022-11-16 11:06:31,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 260 transitions, 1251 flow. Second operand has 66 states, 66 states have (on average 100.74242424242425) internal successors, (6649), 66 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states 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 11:06:31,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:31,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 207 [2022-11-16 11:06:31,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:50,978 INFO L130 PetriNetUnfolder]: 18999/37293 cut-off events. [2022-11-16 11:06:50,979 INFO L131 PetriNetUnfolder]: For 103795/103981 co-relation queries the response was YES. [2022-11-16 11:06:51,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124543 conditions, 37293 events. 18999/37293 cut-off events. For 103795/103981 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 368728 event pairs, 2666 based on Foata normal form. 88/35126 useless extension candidates. Maximal degree in co-relation 124507. Up to 4985 conditions per place. [2022-11-16 11:06:51,639 INFO L137 encePairwiseOnDemand]: 176/207 looper letters, 793 selfloop transitions, 194 changer transitions 10/1079 dead transitions. [2022-11-16 11:06:51,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1079 transitions, 8500 flow [2022-11-16 11:06:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-16 11:06:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-11-16 11:06:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 6373 transitions. [2022-11-16 11:06:51,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5218210103987554 [2022-11-16 11:06:51,659 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 6373 transitions. [2022-11-16 11:06:51,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 6373 transitions. [2022-11-16 11:06:51,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:51,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 6373 transitions. [2022-11-16 11:06:51,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 108.01694915254237) internal successors, (6373), 59 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states 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 11:06:51,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 207.0) internal successors, (12420), 60 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states 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 11:06:51,713 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 207.0) internal successors, (12420), 60 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states 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 11:06:51,714 INFO L175 Difference]: Start difference. First operand has 246 places, 260 transitions, 1251 flow. Second operand 59 states and 6373 transitions. [2022-11-16 11:06:51,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1079 transitions, 8500 flow [2022-11-16 11:06:52,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1079 transitions, 8272 flow, removed 82 selfloop flow, removed 11 redundant places. [2022-11-16 11:06:52,582 INFO L231 Difference]: Finished difference. Result has 324 places, 442 transitions, 3497 flow [2022-11-16 11:06:52,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=3497, PETRI_PLACES=324, PETRI_TRANSITIONS=442} [2022-11-16 11:06:52,584 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 144 predicate places. [2022-11-16 11:06:52,584 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 442 transitions, 3497 flow [2022-11-16 11:06:52,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 100.74242424242425) internal successors, (6649), 66 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states 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 11:06:52,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:52,587 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:52,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:52,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:52,794 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:06:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:52,795 INFO L85 PathProgramCache]: Analyzing trace with hash 999850967, now seen corresponding path program 1 times [2022-11-16 11:06:52,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:52,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092038619] [2022-11-16 11:06:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:52,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:06:55,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:55,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092038619] [2022-11-16 11:06:55,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092038619] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:55,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267820535] [2022-11-16 11:06:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:55,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:55,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:55,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:55,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:06:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:55,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 11:06:55,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:55,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:55,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:06:55,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 11:06:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:06:56,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:06:56,523 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_435 (Array Int Int))) (= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_435) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))) is different from false [2022-11-16 11:06:56,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:06:56,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 34 [2022-11-16 11:06:56,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:06:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:06:56,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267820535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:06:56,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:06:56,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 17] total 42 [2022-11-16 11:06:56,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725289350] [2022-11-16 11:06:56,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:06:56,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-16 11:06:56,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-16 11:06:56,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1496, Unknown=14, NotChecked=78, Total=1722 [2022-11-16 11:06:56,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 207 [2022-11-16 11:06:56,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 442 transitions, 3497 flow. Second operand has 42 states, 42 states have (on average 108.54761904761905) internal successors, (4559), 42 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states 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 11:06:56,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:56,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 207 [2022-11-16 11:06:56,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:07:25,834 INFO L130 PetriNetUnfolder]: 42517/83649 cut-off events. [2022-11-16 11:07:25,834 INFO L131 PetriNetUnfolder]: For 624295/624971 co-relation queries the response was YES. [2022-11-16 11:07:26,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383451 conditions, 83649 events. 42517/83649 cut-off events. For 624295/624971 co-relation queries the response was YES. Maximal size of possible extension queue 4206. Compared 935898 event pairs, 5412 based on Foata normal form. 304/78392 useless extension candidates. Maximal degree in co-relation 383384. Up to 24206 conditions per place. [2022-11-16 11:07:27,871 INFO L137 encePairwiseOnDemand]: 175/207 looper letters, 649 selfloop transitions, 274 changer transitions 5/1026 dead transitions. [2022-11-16 11:07:27,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 1026 transitions, 11239 flow [2022-11-16 11:07:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:07:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:07:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3825 transitions. [2022-11-16 11:07:27,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5599472990777339 [2022-11-16 11:07:27,887 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3825 transitions. [2022-11-16 11:07:27,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3825 transitions. [2022-11-16 11:07:27,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:27,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3825 transitions. [2022-11-16 11:07:27,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 115.9090909090909) internal successors, (3825), 33 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 11:07:27,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 207.0) internal successors, (7038), 34 states have internal predecessors, (7038), 0 states have call successors, (0), 0 states 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 11:07:27,921 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 207.0) internal successors, (7038), 34 states have internal predecessors, (7038), 0 states have call successors, (0), 0 states 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 11:07:27,921 INFO L175 Difference]: Start difference. First operand has 324 places, 442 transitions, 3497 flow. Second operand 33 states and 3825 transitions. [2022-11-16 11:07:27,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 1026 transitions, 11239 flow [2022-11-16 11:07:41,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 1026 transitions, 10740 flow, removed 234 selfloop flow, removed 17 redundant places. [2022-11-16 11:07:41,685 INFO L231 Difference]: Finished difference. Result has 353 places, 671 transitions, 7160 flow [2022-11-16 11:07:41,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=3278, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7160, PETRI_PLACES=353, PETRI_TRANSITIONS=671} [2022-11-16 11:07:41,686 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 173 predicate places. [2022-11-16 11:07:41,686 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 671 transitions, 7160 flow [2022-11-16 11:07:41,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 108.54761904761905) internal successors, (4559), 42 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states 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 11:07:41,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:07:41,689 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:41,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:41,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:07:41,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 11:07:41,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:41,897 INFO L85 PathProgramCache]: Analyzing trace with hash -967184813, now seen corresponding path program 2 times [2022-11-16 11:07:41,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:41,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270162089] [2022-11-16 11:07:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:41,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:07:43,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:43,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270162089] [2022-11-16 11:07:43,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270162089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:43,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055221423] [2022-11-16 11:07:43,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:07:43,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:43,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:43,005 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:43,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3ed68-68a9-4a7c-9fa9-d9f80000261f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:07:43,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:07:43,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:07:43,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 11:07:43,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:43,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 11:07:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:43,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:44,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:07:44,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2022-11-16 11:07:44,154 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-11-16 11:07:44,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 11:07:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:07:44,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055221423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:07:44,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:07:44,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 10] total 30 [2022-11-16 11:07:44,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413204726] [2022-11-16 11:07:44,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:44,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 11:07:44,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:44,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 11:07:44,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:07:44,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 207 [2022-11-16 11:07:44,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 671 transitions, 7160 flow. Second operand has 30 states, 30 states have (on average 115.13333333333334) internal successors, (3454), 30 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states 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 11:07:44,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:07:44,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 207 [2022-11-16 11:07:44,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand