./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i --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_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/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_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/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_dc5d00b3-87dd-4242-b669-48e561c5c534/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 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 --- 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 11:55:02,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:55:02,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:55:02,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:55:02,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:55:02,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:55:02,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:55:02,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:55:02,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:55:02,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:55:02,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:55:02,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:55:02,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:55:02,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:55:02,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:55:02,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:55:02,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:55:02,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:55:02,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:55:02,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:55:02,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:55:02,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:55:02,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:55:02,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:55:02,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:55:02,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:55:02,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:55:02,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:55:02,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:55:02,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:55:02,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:55:02,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:55:02,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:55:02,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:55:02,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:55:02,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:55:02,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:55:02,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:55:02,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:55:02,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:55:02,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:55:02,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:55:02,515 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:55:02,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:55:02,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:55:02,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:55:02,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:55:02,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:55:02,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:55:02,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:55:02,518 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:55:02,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:55:02,518 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:55:02,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:55:02,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:55:02,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:55:02,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:55:02,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:55:02,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:55:02,520 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:55:02,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:55:02,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:55:02,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:55:02,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:55:02,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:55:02,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:55:02,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:55:02,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:55:02,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:55:02,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:55:02,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:55:02,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:55:02,526 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:55:02,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:55:02,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:55:02,527 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_dc5d00b3-87dd-4242-b669-48e561c5c534/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 [2022-11-16 11:55:02,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:55:02,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:55:02,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:55:02,861 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:55:02,862 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:55:02,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/safe004_tso.i [2022-11-16 11:55:02,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/data/00296cc95/2eeb67b13445469f89cc308d8dab281e/FLAG53c06a551 [2022-11-16 11:55:03,646 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:55:03,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/sv-benchmarks/c/pthread-wmm/safe004_tso.i [2022-11-16 11:55:03,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/data/00296cc95/2eeb67b13445469f89cc308d8dab281e/FLAG53c06a551 [2022-11-16 11:55:03,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/data/00296cc95/2eeb67b13445469f89cc308d8dab281e [2022-11-16 11:55:03,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:55:03,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:55:03,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:55:03,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:55:03,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:55:03,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:03" (1/1) ... [2022-11-16 11:55:03,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1b027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:03, skipping insertion in model container [2022-11-16 11:55:03,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:03" (1/1) ... [2022-11-16 11:55:03,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:55:03,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:55:04,265 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_dc5d00b3-87dd-4242-b669-48e561c5c534/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2022-11-16 11:55:04,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:55:04,519 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:55:04,539 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_dc5d00b3-87dd-4242-b669-48e561c5c534/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2022-11-16 11:55:04,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:55:04,624 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:55:04,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04 WrapperNode [2022-11-16 11:55:04,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:55:04,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:55:04,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:55:04,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:55:04,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,704 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-16 11:55:04,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:55:04,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:55:04,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:55:04,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:55:04,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:55:04,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:55:04,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:55:04,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:55:04,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (1/1) ... [2022-11-16 11:55:04,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:55:04,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:04,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:55:04,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:55:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:55:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:55:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:55:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:55:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:55:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 11:55:04,848 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 11:55:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 11:55:04,848 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 11:55:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 11:55:04,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 11:55:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:55:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:55:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:55:04,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:55:04,851 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 11:55:05,041 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:55:05,043 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:55:05,236 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:55:05,244 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:55:05,246 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:55:05,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:55:05 BoogieIcfgContainer [2022-11-16 11:55:05,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:55:05,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:55:05,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:55:05,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:55:05,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:55:03" (1/3) ... [2022-11-16 11:55:05,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9453ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:05, skipping insertion in model container [2022-11-16 11:55:05,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:04" (2/3) ... [2022-11-16 11:55:05,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9453ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:05, skipping insertion in model container [2022-11-16 11:55:05,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:55:05" (3/3) ... [2022-11-16 11:55:05,263 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2022-11-16 11:55:05,271 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:55:05,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:55:05,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:55:05,283 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:55:05,352 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:55:05,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-11-16 11:55:05,496 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-11-16 11:55:05,496 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:55:05,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-16 11:55:05,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-11-16 11:55:05,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-11-16 11:55:05,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:55:05,539 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;@264619, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:55:05,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 11:55:05,589 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-11-16 11:55:05,589 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:55:05,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:05,590 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] [2022-11-16 11:55:05,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:55:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:05,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1828707495, now seen corresponding path program 1 times [2022-11-16 11:55:05,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:05,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511025747] [2022-11-16 11:55:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:05,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:06,528 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 11:55:06,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:06,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511025747] [2022-11-16 11:55:06,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511025747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:06,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:06,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:55:06,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045036055] [2022-11-16 11:55:06,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:06,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:55:06,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:06,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:55:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:55:06,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 91 [2022-11-16 11:55:06,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 11:55:06,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:06,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 91 [2022-11-16 11:55:06,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:06,800 INFO L130 PetriNetUnfolder]: 3/89 cut-off events. [2022-11-16 11:55:06,800 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:55:06,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 89 events. 3/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 88. Up to 7 conditions per place. [2022-11-16 11:55:06,802 INFO L137 encePairwiseOnDemand]: 84/91 looper letters, 9 selfloop transitions, 2 changer transitions 11/83 dead transitions. [2022-11-16 11:55:06,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 217 flow [2022-11-16 11:55:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 709 transitions. [2022-11-16 11:55:06,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8656898656898657 [2022-11-16 11:55:06,820 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 709 transitions. [2022-11-16 11:55:06,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 709 transitions. [2022-11-16 11:55:06,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:06,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 709 transitions. [2022-11-16 11:55:06,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.77777777777777) internal successors, (709), 9 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 11:55:06,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 11:55:06,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 11:55:06,850 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 709 transitions. [2022-11-16 11:55:06,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 217 flow [2022-11-16 11:55:06,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:55:06,862 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 170 flow [2022-11-16 11:55:06,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2022-11-16 11:55:06,868 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2022-11-16 11:55:06,869 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 170 flow [2022-11-16 11:55:06,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 11:55:06,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:06,870 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] [2022-11-16 11:55:06,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:55:06,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:55:06,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1789094598, now seen corresponding path program 1 times [2022-11-16 11:55:06,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:06,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648093228] [2022-11-16 11:55:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:07,176 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 11:55:07,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:07,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648093228] [2022-11-16 11:55:07,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648093228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:07,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:07,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:55:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502195212] [2022-11-16 11:55:07,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:07,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:55:07,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:07,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:55:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:55:07,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-16 11:55:07,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 11:55:07,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:07,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-16 11:55:07,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:07,679 INFO L130 PetriNetUnfolder]: 382/821 cut-off events. [2022-11-16 11:55:07,680 INFO L131 PetriNetUnfolder]: For 258/343 co-relation queries the response was YES. [2022-11-16 11:55:07,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 821 events. 382/821 cut-off events. For 258/343 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4022 event pairs, 13 based on Foata normal form. 26/812 useless extension candidates. Maximal degree in co-relation 1711. Up to 234 conditions per place. [2022-11-16 11:55:07,688 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 27 selfloop transitions, 10 changer transitions 50/140 dead transitions. [2022-11-16 11:55:07,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 140 transitions, 534 flow [2022-11-16 11:55:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:55:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:55:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 974 transitions. [2022-11-16 11:55:07,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8233305156382079 [2022-11-16 11:55:07,693 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 974 transitions. [2022-11-16 11:55:07,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 974 transitions. [2022-11-16 11:55:07,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:07,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 974 transitions. [2022-11-16 11:55:07,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.92307692307692) internal successors, (974), 13 states have internal predecessors, (974), 0 states have call successors, (0), 0 states 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 11:55:07,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states 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 11:55:07,700 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states 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 11:55:07,701 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 170 flow. Second operand 13 states and 974 transitions. [2022-11-16 11:55:07,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 140 transitions, 534 flow [2022-11-16 11:55:07,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 478 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-11-16 11:55:07,711 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 259 flow [2022-11-16 11:55:07,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=259, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2022-11-16 11:55:07,712 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-11-16 11:55:07,712 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 259 flow [2022-11-16 11:55:07,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 11:55:07,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:07,713 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] [2022-11-16 11:55:07,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:55:07,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:55:07,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1143431515, now seen corresponding path program 1 times [2022-11-16 11:55:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:07,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888631411] [2022-11-16 11:55:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:07,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:08,010 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 11:55:08,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:08,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888631411] [2022-11-16 11:55:08,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888631411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:08,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:08,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:55:08,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209154792] [2022-11-16 11:55:08,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:08,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:55:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:55:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:55:08,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-16 11:55:08,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 259 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 11:55:08,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:08,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-16 11:55:08,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:08,402 INFO L130 PetriNetUnfolder]: 244/715 cut-off events. [2022-11-16 11:55:08,402 INFO L131 PetriNetUnfolder]: For 1423/1627 co-relation queries the response was YES. [2022-11-16 11:55:08,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2201 conditions, 715 events. 244/715 cut-off events. For 1423/1627 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3918 event pairs, 3 based on Foata normal form. 26/723 useless extension candidates. Maximal degree in co-relation 2150. Up to 216 conditions per place. [2022-11-16 11:55:08,412 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 29 selfloop transitions, 15 changer transitions 47/144 dead transitions. [2022-11-16 11:55:08,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 144 transitions, 882 flow [2022-11-16 11:55:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:55:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:55:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 963 transitions. [2022-11-16 11:55:08,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8140321217244294 [2022-11-16 11:55:08,416 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 963 transitions. [2022-11-16 11:55:08,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 963 transitions. [2022-11-16 11:55:08,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:08,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 963 transitions. [2022-11-16 11:55:08,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.07692307692308) internal successors, (963), 13 states have internal predecessors, (963), 0 states have call successors, (0), 0 states 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 11:55:08,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states 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 11:55:08,424 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states 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 11:55:08,424 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 259 flow. Second operand 13 states and 963 transitions. [2022-11-16 11:55:08,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 144 transitions, 882 flow [2022-11-16 11:55:08,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 144 transitions, 850 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-11-16 11:55:08,436 INFO L231 Difference]: Finished difference. Result has 116 places, 87 transitions, 412 flow [2022-11-16 11:55:08,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=412, PETRI_PLACES=116, PETRI_TRANSITIONS=87} [2022-11-16 11:55:08,439 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2022-11-16 11:55:08,440 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 87 transitions, 412 flow [2022-11-16 11:55:08,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 11:55:08,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:08,441 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] [2022-11-16 11:55:08,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:55:08,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:55:08,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:08,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1952971604, now seen corresponding path program 1 times [2022-11-16 11:55:08,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:08,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521487071] [2022-11-16 11:55:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:08,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:08,718 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 11:55:08,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:08,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521487071] [2022-11-16 11:55:08,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521487071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:08,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:08,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:55:08,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142069780] [2022-11-16 11:55:08,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:08,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:55:08,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:08,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:55:08,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:55:08,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-16 11:55:08,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 87 transitions, 412 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 11:55:08,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:08,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-16 11:55:08,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:08,962 INFO L130 PetriNetUnfolder]: 136/422 cut-off events. [2022-11-16 11:55:08,962 INFO L131 PetriNetUnfolder]: For 2153/2885 co-relation queries the response was YES. [2022-11-16 11:55:08,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 422 events. 136/422 cut-off events. For 2153/2885 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1882 event pairs, 20 based on Foata normal form. 11/416 useless extension candidates. Maximal degree in co-relation 1670. Up to 127 conditions per place. [2022-11-16 11:55:08,967 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 31 selfloop transitions, 14 changer transitions 40/138 dead transitions. [2022-11-16 11:55:08,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 138 transitions, 1104 flow [2022-11-16 11:55:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 735 transitions. [2022-11-16 11:55:08,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8076923076923077 [2022-11-16 11:55:08,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 735 transitions. [2022-11-16 11:55:08,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 735 transitions. [2022-11-16 11:55:08,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:08,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 735 transitions. [2022-11-16 11:55:08,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 11:55:08,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 11:55:08,976 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 11:55:08,977 INFO L175 Difference]: Start difference. First operand has 116 places, 87 transitions, 412 flow. Second operand 10 states and 735 transitions. [2022-11-16 11:55:08,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 138 transitions, 1104 flow [2022-11-16 11:55:08,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 138 transitions, 962 flow, removed 71 selfloop flow, removed 10 redundant places. [2022-11-16 11:55:08,988 INFO L231 Difference]: Finished difference. Result has 115 places, 90 transitions, 480 flow [2022-11-16 11:55:08,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=480, PETRI_PLACES=115, PETRI_TRANSITIONS=90} [2022-11-16 11:55:08,989 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-11-16 11:55:08,990 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 90 transitions, 480 flow [2022-11-16 11:55:08,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 11:55:08,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:08,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:08,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:55:08,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:55:08,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:08,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1970418918, now seen corresponding path program 1 times [2022-11-16 11:55:08,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:08,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047256697] [2022-11-16 11:55:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:08,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:09,277 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 11:55:09,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:09,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047256697] [2022-11-16 11:55:09,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047256697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:09,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:09,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:55:09,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408030741] [2022-11-16 11:55:09,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:09,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:55:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:55:09,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:55:09,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2022-11-16 11:55:09,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 90 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 11:55:09,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:09,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2022-11-16 11:55:09,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:09,456 INFO L130 PetriNetUnfolder]: 56/294 cut-off events. [2022-11-16 11:55:09,456 INFO L131 PetriNetUnfolder]: For 1216/1831 co-relation queries the response was YES. [2022-11-16 11:55:09,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 294 events. 56/294 cut-off events. For 1216/1831 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1302 event pairs, 11 based on Foata normal form. 12/295 useless extension candidates. Maximal degree in co-relation 1009. Up to 62 conditions per place. [2022-11-16 11:55:09,460 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 15 selfloop transitions, 6 changer transitions 25/108 dead transitions. [2022-11-16 11:55:09,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 108 transitions, 731 flow [2022-11-16 11:55:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:55:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:55:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-11-16 11:55:09,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8414442700156985 [2022-11-16 11:55:09,463 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-11-16 11:55:09,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-11-16 11:55:09,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:09,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-11-16 11:55:09,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states 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 11:55:09,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 11:55:09,467 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 11:55:09,467 INFO L175 Difference]: Start difference. First operand has 115 places, 90 transitions, 480 flow. Second operand 7 states and 536 transitions. [2022-11-16 11:55:09,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 108 transitions, 731 flow [2022-11-16 11:55:09,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 108 transitions, 692 flow, removed 14 selfloop flow, removed 10 redundant places. [2022-11-16 11:55:09,475 INFO L231 Difference]: Finished difference. Result has 109 places, 81 transitions, 370 flow [2022-11-16 11:55:09,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=109, PETRI_TRANSITIONS=81} [2022-11-16 11:55:09,478 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 26 predicate places. [2022-11-16 11:55:09,479 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 81 transitions, 370 flow [2022-11-16 11:55:09,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 11:55:09,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:09,481 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] [2022-11-16 11:55:09,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:55:09,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:55:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash 213974988, now seen corresponding path program 2 times [2022-11-16 11:55:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:09,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792227803] [2022-11-16 11:55:09,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:09,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:09,739 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 11:55:09,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:09,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792227803] [2022-11-16 11:55:09,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792227803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:09,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:09,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:55:09,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103380862] [2022-11-16 11:55:09,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:09,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:55:09,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:09,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:55:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:55:09,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2022-11-16 11:55:09,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 81 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 11:55:09,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:09,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2022-11-16 11:55:09,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:09,936 INFO L130 PetriNetUnfolder]: 23/172 cut-off events. [2022-11-16 11:55:09,937 INFO L131 PetriNetUnfolder]: For 596/729 co-relation queries the response was YES. [2022-11-16 11:55:09,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 172 events. 23/172 cut-off events. For 596/729 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 517 event pairs, 3 based on Foata normal form. 11/179 useless extension candidates. Maximal degree in co-relation 525. Up to 30 conditions per place. [2022-11-16 11:55:09,938 INFO L137 encePairwiseOnDemand]: 84/91 looper letters, 14 selfloop transitions, 1 changer transitions 26/98 dead transitions. [2022-11-16 11:55:09,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 98 transitions, 568 flow [2022-11-16 11:55:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:55:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:55:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 824 transitions. [2022-11-16 11:55:09,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8231768231768232 [2022-11-16 11:55:09,941 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 824 transitions. [2022-11-16 11:55:09,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 824 transitions. [2022-11-16 11:55:09,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:09,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 824 transitions. [2022-11-16 11:55:09,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.9090909090909) internal successors, (824), 11 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 11:55:09,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 11:55:09,947 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 11:55:09,947 INFO L175 Difference]: Start difference. First operand has 109 places, 81 transitions, 370 flow. Second operand 11 states and 824 transitions. [2022-11-16 11:55:09,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 98 transitions, 568 flow [2022-11-16 11:55:09,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 98 transitions, 510 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-11-16 11:55:09,952 INFO L231 Difference]: Finished difference. Result has 116 places, 72 transitions, 254 flow [2022-11-16 11:55:09,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=254, PETRI_PLACES=116, PETRI_TRANSITIONS=72} [2022-11-16 11:55:09,953 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2022-11-16 11:55:09,953 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 72 transitions, 254 flow [2022-11-16 11:55:09,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 11:55:09,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:09,954 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] [2022-11-16 11:55:09,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:55:09,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:55:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:09,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1513057266, now seen corresponding path program 1 times [2022-11-16 11:55:09,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373107238] [2022-11-16 11:55:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:10,218 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 11:55:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:10,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373107238] [2022-11-16 11:55:10,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373107238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:10,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:10,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:55:10,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022682563] [2022-11-16 11:55:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:10,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:55:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:10,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:55:10,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:55:10,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-16 11:55:10,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 72 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 11:55:10,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:10,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-16 11:55:10,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:10,360 INFO L130 PetriNetUnfolder]: 94/317 cut-off events. [2022-11-16 11:55:10,361 INFO L131 PetriNetUnfolder]: For 139/140 co-relation queries the response was YES. [2022-11-16 11:55:10,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 317 events. 94/317 cut-off events. For 139/140 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1489 event pairs, 14 based on Foata normal form. 8/319 useless extension candidates. Maximal degree in co-relation 579. Up to 86 conditions per place. [2022-11-16 11:55:10,363 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 13 selfloop transitions, 5 changer transitions 21/98 dead transitions. [2022-11-16 11:55:10,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 98 transitions, 386 flow [2022-11-16 11:55:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2022-11-16 11:55:10,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2022-11-16 11:55:10,366 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2022-11-16 11:55:10,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2022-11-16 11:55:10,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:10,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2022-11-16 11:55:10,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 11:55:10,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 11:55:10,371 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 11:55:10,371 INFO L175 Difference]: Start difference. First operand has 116 places, 72 transitions, 254 flow. Second operand 9 states and 707 transitions. [2022-11-16 11:55:10,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 98 transitions, 386 flow [2022-11-16 11:55:10,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 302 flow, removed 20 selfloop flow, removed 23 redundant places. [2022-11-16 11:55:10,375 INFO L231 Difference]: Finished difference. Result has 99 places, 74 transitions, 220 flow [2022-11-16 11:55:10,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=220, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2022-11-16 11:55:10,376 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 16 predicate places. [2022-11-16 11:55:10,376 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 220 flow [2022-11-16 11:55:10,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 11:55:10,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:10,377 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] [2022-11-16 11:55:10,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:55:10,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:55:10,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:10,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1022519785, now seen corresponding path program 1 times [2022-11-16 11:55:10,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:10,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219012290] [2022-11-16 11:55:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:10,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:10,567 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 11:55:10,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:10,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219012290] [2022-11-16 11:55:10,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219012290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:10,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:10,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:55:10,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261646978] [2022-11-16 11:55:10,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:10,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:55:10,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:10,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:55:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:55:10,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-16 11:55:10,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 11:55:10,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:10,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-16 11:55:10,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:10,725 INFO L130 PetriNetUnfolder]: 43/199 cut-off events. [2022-11-16 11:55:10,725 INFO L131 PetriNetUnfolder]: For 254/271 co-relation queries the response was YES. [2022-11-16 11:55:10,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 199 events. 43/199 cut-off events. For 254/271 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 698 event pairs, 0 based on Foata normal form. 7/205 useless extension candidates. Maximal degree in co-relation 511. Up to 65 conditions per place. [2022-11-16 11:55:10,727 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 9 selfloop transitions, 7 changer transitions 25/100 dead transitions. [2022-11-16 11:55:10,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 100 transitions, 483 flow [2022-11-16 11:55:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:10,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 783 transitions. [2022-11-16 11:55:10,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8604395604395605 [2022-11-16 11:55:10,730 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 783 transitions. [2022-11-16 11:55:10,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 783 transitions. [2022-11-16 11:55:10,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:10,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 783 transitions. [2022-11-16 11:55:10,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.3) internal successors, (783), 10 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 11:55:10,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 11:55:10,736 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 11:55:10,736 INFO L175 Difference]: Start difference. First operand has 99 places, 74 transitions, 220 flow. Second operand 10 states and 783 transitions. [2022-11-16 11:55:10,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 100 transitions, 483 flow [2022-11-16 11:55:10,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 455 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-16 11:55:10,740 INFO L231 Difference]: Finished difference. Result has 103 places, 74 transitions, 241 flow [2022-11-16 11:55:10,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=241, PETRI_PLACES=103, PETRI_TRANSITIONS=74} [2022-11-16 11:55:10,743 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 20 predicate places. [2022-11-16 11:55:10,744 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 74 transitions, 241 flow [2022-11-16 11:55:10,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 11:55:10,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:10,744 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] [2022-11-16 11:55:10,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:55:10,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:55:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:10,745 INFO L85 PathProgramCache]: Analyzing trace with hash -866098554, now seen corresponding path program 1 times [2022-11-16 11:55:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:10,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700059686] [2022-11-16 11:55:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:10,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:10,968 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 11:55:10,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:10,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700059686] [2022-11-16 11:55:10,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700059686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:10,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:10,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:55:10,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394380323] [2022-11-16 11:55:10,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:10,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:55:10,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:10,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:55:10,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:55:10,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-16 11:55:10,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 74 transitions, 241 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 11:55:10,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:10,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-16 11:55:10,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:11,121 INFO L130 PetriNetUnfolder]: 5/92 cut-off events. [2022-11-16 11:55:11,121 INFO L131 PetriNetUnfolder]: For 192/201 co-relation queries the response was YES. [2022-11-16 11:55:11,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 92 events. 5/92 cut-off events. For 192/201 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 5/97 useless extension candidates. Maximal degree in co-relation 210. Up to 14 conditions per place. [2022-11-16 11:55:11,122 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2022-11-16 11:55:11,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 77 transitions, 349 flow [2022-11-16 11:55:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:55:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:55:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 841 transitions. [2022-11-16 11:55:11,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8401598401598401 [2022-11-16 11:55:11,125 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 841 transitions. [2022-11-16 11:55:11,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 841 transitions. [2022-11-16 11:55:11,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:11,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 841 transitions. [2022-11-16 11:55:11,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.45454545454545) internal successors, (841), 11 states have internal predecessors, (841), 0 states have call successors, (0), 0 states 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 11:55:11,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 11:55:11,131 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 11:55:11,131 INFO L175 Difference]: Start difference. First operand has 103 places, 74 transitions, 241 flow. Second operand 11 states and 841 transitions. [2022-11-16 11:55:11,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 77 transitions, 349 flow [2022-11-16 11:55:11,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 77 transitions, 282 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-11-16 11:55:11,134 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2022-11-16 11:55:11,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2022-11-16 11:55:11,134 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2022-11-16 11:55:11,135 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2022-11-16 11:55:11,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 11:55:11,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-16 11:55:11,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-16 11:55:11,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-16 11:55:11,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-16 11:55:11,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:55:11,140 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:11,143 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:55:11,143 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:55:11,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:55:11 BasicIcfg [2022-11-16 11:55:11,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:55:11,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:55:11,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:55:11,150 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:55:11,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:55:05" (3/4) ... [2022-11-16 11:55:11,154 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:55:11,161 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-16 11:55:11,161 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-16 11:55:11,161 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-16 11:55:11,165 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-16 11:55:11,165 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:55:11,166 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:55:11,166 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:55:11,198 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:55:11,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:55:11,199 INFO L158 Benchmark]: Toolchain (without parser) took 7295.39ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 86.9MB in the beginning and 77.0MB in the end (delta: 9.8MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2022-11-16 11:55:11,199 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 70.6MB in the beginning and 70.5MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:55:11,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 713.32ms. Allocated memory is still 121.6MB. Free memory was 86.4MB in the beginning and 87.5MB in the end (delta: -1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:55:11,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.07ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 85.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:55:11,200 INFO L158 Benchmark]: Boogie Preprocessor took 47.59ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 84.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:55:11,201 INFO L158 Benchmark]: RCFGBuilder took 497.77ms. Allocated memory is still 121.6MB. Free memory was 84.0MB in the beginning and 70.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:55:11,201 INFO L158 Benchmark]: TraceAbstraction took 5895.93ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 69.3MB in the beginning and 80.2MB in the end (delta: -10.9MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2022-11-16 11:55:11,202 INFO L158 Benchmark]: Witness Printer took 48.42ms. Allocated memory is still 176.2MB. Free memory was 80.2MB in the beginning and 77.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:55:11,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 70.6MB in the beginning and 70.5MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 713.32ms. Allocated memory is still 121.6MB. Free memory was 86.4MB in the beginning and 87.5MB in the end (delta: -1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.07ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 85.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.59ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 84.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.77ms. Allocated memory is still 121.6MB. Free memory was 84.0MB in the beginning and 70.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5895.93ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 69.3MB in the beginning and 80.2MB in the end (delta: -10.9MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. * Witness Printer took 48.42ms. Allocated memory is still 176.2MB. Free memory was 80.2MB in the beginning and 77.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 347 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 347 mSDsluCounter, 482 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 360 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 491 IncrementalHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 122 mSDtfsCounter, 491 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=480occurred in iteration=4, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 539 NumberOfCodeBlocks, 539 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 530 ConstructedInterpolants, 0 QuantifiedInterpolants, 1686 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:55:11,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc5d00b3-87dd-4242-b669-48e561c5c534/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE