./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/bigshot_s2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/bigshot_s2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:20:22,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:20:22,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:20:22,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:20:22,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:20:22,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:20:22,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:20:22,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:20:22,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:20:22,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:20:22,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:20:22,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:20:22,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:20:22,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:20:22,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:20:22,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:20:22,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:20:22,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:20:22,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:20:22,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:20:22,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:20:22,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:20:22,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:20:22,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:20:22,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:20:22,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:20:22,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:20:22,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:20:22,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:20:22,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:20:22,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:20:22,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:20:22,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:20:22,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:20:22,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:20:22,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:20:22,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:20:22,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:20:22,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:20:22,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:20:22,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:20:22,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:20:22,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:20:22,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:20:22,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:20:22,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:20:22,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:20:22,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:20:22,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:20:22,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:20:22,512 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:20:22,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:20:22,512 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:20:22,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:20:22,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:20:22,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:20:22,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:20:22,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:20:22,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:20:22,514 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:20:22,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:20:22,514 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:20:22,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:20:22,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:20:22,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:20:22,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:20:22,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:20:22,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:20:22,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:20:22,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:20:22,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:20:22,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:20:22,517 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:20:22,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:20:22,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:20:22,517 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_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb [2022-11-18 20:20:22,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:20:22,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:20:22,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:20:22,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:20:22,779 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:20:22,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-18 20:20:22,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/data/9c60064bc/e6de1e5559604443b121a025d0fcb707/FLAGe4c1d6ff8 [2022-11-18 20:20:23,485 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:20:23,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-18 20:20:23,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/data/9c60064bc/e6de1e5559604443b121a025d0fcb707/FLAGe4c1d6ff8 [2022-11-18 20:20:23,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/data/9c60064bc/e6de1e5559604443b121a025d0fcb707 [2022-11-18 20:20:23,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:20:23,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:20:23,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:20:23,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:20:23,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:20:23,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:20:23" (1/1) ... [2022-11-18 20:20:23,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b87dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:23, skipping insertion in model container [2022-11-18 20:20:23,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:20:23" (1/1) ... [2022-11-18 20:20:23,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:20:23,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:20:24,330 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-18 20:20:24,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:20:24,358 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:20:24,399 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-18 20:20:24,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:20:24,465 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:20:24,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24 WrapperNode [2022-11-18 20:20:24,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:20:24,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:20:24,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:20:24,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:20:24,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,515 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-18 20:20:24,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:20:24,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:20:24,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:20:24,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:20:24,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,542 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:20:24,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:20:24,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:20:24,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:20:24,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (1/1) ... [2022-11-18 20:20:24,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:20:24,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:24,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:20:24,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:20:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:20:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:20:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 20:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:20:24,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:20:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:20:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:20:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:20:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:20:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:20:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:20:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:20:24,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:20:24,633 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:20:24,847 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:20:24,860 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:20:25,101 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:20:25,115 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:20:25,116 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:20:25,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:25 BoogieIcfgContainer [2022-11-18 20:20:25,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:20:25,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:20:25,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:20:25,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:20:25,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:20:23" (1/3) ... [2022-11-18 20:20:25,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8f6a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:20:25, skipping insertion in model container [2022-11-18 20:20:25,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:24" (2/3) ... [2022-11-18 20:20:25,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8f6a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:20:25, skipping insertion in model container [2022-11-18 20:20:25,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:25" (3/3) ... [2022-11-18 20:20:25,133 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2022-11-18 20:20:25,143 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:20:25,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:20:25,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:20:25,156 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:20:25,253 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:20:25,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 90 transitions, 196 flow [2022-11-18 20:20:25,342 INFO L130 PetriNetUnfolder]: 4/88 cut-off events. [2022-11-18 20:20:25,342 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:20:25,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 4/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-18 20:20:25,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 90 transitions, 196 flow [2022-11-18 20:20:25,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 75 transitions, 162 flow [2022-11-18 20:20:25,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:20:25,369 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;@2ce6be8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:20:25,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 20:20:25,394 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-18 20:20:25,394 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:20:25,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:25,395 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] [2022-11-18 20:20:25,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:20:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1001960539, now seen corresponding path program 1 times [2022-11-18 20:20:25,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:25,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754742556] [2022-11-18 20:20:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:25,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:25,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754742556] [2022-11-18 20:20:25,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754742556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:25,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:25,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:20:25,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530955865] [2022-11-18 20:20:25,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:26,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:20:26,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:26,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:20:26,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:20:26,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 90 [2022-11-18 20:20:26,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:26,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:26,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 90 [2022-11-18 20:20:26,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:26,186 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-11-18 20:20:26,186 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 20:20:26,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 73 events. 1/73 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 43. Up to 7 conditions per place. [2022-11-18 20:20:26,188 INFO L137 encePairwiseOnDemand]: 85/90 looper letters, 8 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2022-11-18 20:20:26,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 73 transitions, 180 flow [2022-11-18 20:20:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:20:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:20:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2022-11-18 20:20:26,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8622222222222222 [2022-11-18 20:20:26,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2022-11-18 20:20:26,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2022-11-18 20:20:26,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:26,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2022-11-18 20:20:26,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:26,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:26,233 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:26,235 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 162 flow. Second operand 5 states and 388 transitions. [2022-11-18 20:20:26,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 73 transitions, 180 flow [2022-11-18 20:20:26,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 172 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:20:26,241 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 156 flow [2022-11-18 20:20:26,244 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2022-11-18 20:20:26,247 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2022-11-18 20:20:26,247 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 156 flow [2022-11-18 20:20:26,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:26,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:26,248 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:26,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:20:26,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:20:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash -99642894, now seen corresponding path program 1 times [2022-11-18 20:20:26,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:26,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203108073] [2022-11-18 20:20:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:26,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:27,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:27,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203108073] [2022-11-18 20:20:27,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203108073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:27,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:27,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:20:27,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302323514] [2022-11-18 20:20:27,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:27,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:20:27,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:27,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:20:27,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:20:27,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2022-11-18 20:20:27,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:27,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:27,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2022-11-18 20:20:27,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:27,509 INFO L130 PetriNetUnfolder]: 16/119 cut-off events. [2022-11-18 20:20:27,509 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:20:27,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 119 events. 16/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 1 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 126. Up to 20 conditions per place. [2022-11-18 20:20:27,511 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 36 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2022-11-18 20:20:27,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 270 flow [2022-11-18 20:20:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:20:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:20:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 527 transitions. [2022-11-18 20:20:27,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5855555555555556 [2022-11-18 20:20:27,514 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 527 transitions. [2022-11-18 20:20:27,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 527 transitions. [2022-11-18 20:20:27,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:27,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 527 transitions. [2022-11-18 20:20:27,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 52.7) internal successors, (527), 10 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:27,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:27,520 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:27,520 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 156 flow. Second operand 10 states and 527 transitions. [2022-11-18 20:20:27,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 270 flow [2022-11-18 20:20:27,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 265 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:20:27,524 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 193 flow [2022-11-18 20:20:27,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=193, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2022-11-18 20:20:27,525 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2022-11-18 20:20:27,525 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 193 flow [2022-11-18 20:20:27,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:27,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:27,526 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:27,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:20:27,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:20:27,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:27,528 INFO L85 PathProgramCache]: Analyzing trace with hash 630991872, now seen corresponding path program 1 times [2022-11-18 20:20:27,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:27,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786590325] [2022-11-18 20:20:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:27,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:28,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:28,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786590325] [2022-11-18 20:20:28,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786590325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:28,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369400694] [2022-11-18 20:20:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:28,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:28,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:28,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:28,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:20:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 20:20:28,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:28,766 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:20:28,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:20:28,819 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:20:28,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:20:28,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:29,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:29,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:20:29,346 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:20:29,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-18 20:20:29,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:20:29,518 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:20:29,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 20:20:29,628 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:20:29,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 20:20:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:29,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:30,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369400694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:30,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:30,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 17] total 42 [2022-11-18 20:20:30,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868653119] [2022-11-18 20:20:30,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:30,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:20:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:20:30,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1576, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:20:31,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 90 [2022-11-18 20:20:31,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 193 flow. Second operand has 42 states, 42 states have (on average 38.95238095238095) internal successors, (1636), 42 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:31,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:31,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 90 [2022-11-18 20:20:31,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:32,567 INFO L130 PetriNetUnfolder]: 30/172 cut-off events. [2022-11-18 20:20:32,567 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-18 20:20:32,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 172 events. 30/172 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 359 event pairs, 2 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 264. Up to 32 conditions per place. [2022-11-18 20:20:32,573 INFO L137 encePairwiseOnDemand]: 72/90 looper letters, 51 selfloop transitions, 18 changer transitions 7/105 dead transitions. [2022-11-18 20:20:32,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 418 flow [2022-11-18 20:20:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:20:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:20:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 834 transitions. [2022-11-18 20:20:32,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44126984126984126 [2022-11-18 20:20:32,580 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 834 transitions. [2022-11-18 20:20:32,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 834 transitions. [2022-11-18 20:20:32,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:32,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 834 transitions. [2022-11-18 20:20:32,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 39.714285714285715) internal successors, (834), 21 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:32,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 90.0) internal successors, (1980), 22 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:32,590 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 90.0) internal successors, (1980), 22 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:32,591 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 193 flow. Second operand 21 states and 834 transitions. [2022-11-18 20:20:32,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 418 flow [2022-11-18 20:20:32,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 411 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:20:32,600 INFO L231 Difference]: Finished difference. Result has 109 places, 82 transitions, 264 flow [2022-11-18 20:20:32,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=264, PETRI_PLACES=109, PETRI_TRANSITIONS=82} [2022-11-18 20:20:32,603 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2022-11-18 20:20:32,603 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 82 transitions, 264 flow [2022-11-18 20:20:32,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 38.95238095238095) internal successors, (1636), 42 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:32,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:32,605 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:32,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:20:32,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:32,811 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:20:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1531853158, now seen corresponding path program 2 times [2022-11-18 20:20:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:32,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588258024] [2022-11-18 20:20:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:32,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:33,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:33,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588258024] [2022-11-18 20:20:33,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588258024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:33,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013633925] [2022-11-18 20:20:33,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:20:33,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:33,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:33,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:33,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:20:33,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:20:33,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:33,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 20:20:33,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:33,954 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:20:33,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:20:34,028 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:20:34,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:20:34,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:34,169 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:20:34,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:20:34,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:34,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:34,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:34,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:34,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:20:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:34,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:34,822 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_100 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_100) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 1)))) is different from false [2022-11-18 20:20:36,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 230 [2022-11-18 20:20:36,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 218 [2022-11-18 20:20:36,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 202 [2022-11-18 20:20:36,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 198 [2022-11-18 20:20:44,517 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:20:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-18 20:20:44,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013633925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:44,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:44,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 45 [2022-11-18 20:20:44,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111028373] [2022-11-18 20:20:44,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:44,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:20:44,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:44,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:20:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1697, Unknown=16, NotChecked=84, Total=1980 [2022-11-18 20:20:44,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 90 [2022-11-18 20:20:44,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 82 transitions, 264 flow. Second operand has 45 states, 45 states have (on average 43.91111111111111) internal successors, (1976), 45 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:44,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:44,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 90 [2022-11-18 20:20:44,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:46,537 INFO L130 PetriNetUnfolder]: 60/365 cut-off events. [2022-11-18 20:20:46,540 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-11-18 20:20:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 365 events. 60/365 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1575 event pairs, 7 based on Foata normal form. 3/368 useless extension candidates. Maximal degree in co-relation 902. Up to 69 conditions per place. [2022-11-18 20:20:46,543 INFO L137 encePairwiseOnDemand]: 74/90 looper letters, 99 selfloop transitions, 34 changer transitions 6/171 dead transitions. [2022-11-18 20:20:46,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 171 transitions, 969 flow [2022-11-18 20:20:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:20:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 20:20:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1187 transitions. [2022-11-18 20:20:46,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5072649572649572 [2022-11-18 20:20:46,549 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1187 transitions. [2022-11-18 20:20:46,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1187 transitions. [2022-11-18 20:20:46,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:46,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1187 transitions. [2022-11-18 20:20:46,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 45.65384615384615) internal successors, (1187), 26 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:46,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 90.0) internal successors, (2430), 27 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:46,560 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 90.0) internal successors, (2430), 27 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:46,561 INFO L175 Difference]: Start difference. First operand has 109 places, 82 transitions, 264 flow. Second operand 26 states and 1187 transitions. [2022-11-18 20:20:46,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 171 transitions, 969 flow [2022-11-18 20:20:46,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 171 transitions, 844 flow, removed 29 selfloop flow, removed 15 redundant places. [2022-11-18 20:20:46,572 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 505 flow [2022-11-18 20:20:46,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=505, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2022-11-18 20:20:46,574 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 48 predicate places. [2022-11-18 20:20:46,574 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 505 flow [2022-11-18 20:20:46,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 43.91111111111111) internal successors, (1976), 45 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:46,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:46,576 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:46,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:46,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:46,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:20:46,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:46,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1331018264, now seen corresponding path program 3 times [2022-11-18 20:20:46,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:46,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302311810] [2022-11-18 20:20:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:47,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:47,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302311810] [2022-11-18 20:20:47,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302311810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:47,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365339665] [2022-11-18 20:20:47,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:20:47,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:47,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:47,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:47,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:20:47,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:20:47,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:47,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 20:20:47,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:48,123 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 20:20:48,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 20:20:48,200 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:20:48,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 20:20:48,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:48,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:48,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:20:48,756 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:20:48,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-18 20:20:48,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:20:48,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:20:48,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:20:48,959 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:20:48,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 20:20:49,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:20:49,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:20:49,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:20:49,113 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:20:49,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 20:20:49,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:20:49,267 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:20:49,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 20:20:49,370 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:20:49,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 20:20:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:49,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:32,069 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:21:32,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1150 treesize of output 1124 [2022-11-18 20:21:32,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1370 treesize of output 1350 [2022-11-18 20:21:32,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1654 treesize of output 1622 [2022-11-18 20:21:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 9 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:40,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365339665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:40,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:40,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 22] total 56 [2022-11-18 20:21:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87060898] [2022-11-18 20:21:40,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:40,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 20:21:40,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:40,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 20:21:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=2826, Unknown=15, NotChecked=0, Total=3080 [2022-11-18 20:21:40,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 90 [2022-11-18 20:21:40,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 505 flow. Second operand has 56 states, 56 states have (on average 37.82142857142857) internal successors, (2118), 56 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:40,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:40,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 90 [2022-11-18 20:21:40,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:22:34,185 WARN L233 SmtUtils]: Spent 29.07s on a formula simplification. DAG size of input: 95 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:23:12,838 WARN L233 SmtUtils]: Spent 26.48s on a formula simplification. DAG size of input: 94 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:23:53,611 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| 3))) (and (= (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_main_~#t1~0#1.base|) 1) (< 0 |c_#StackHeapBarrier|) (= 115 (select (select |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) 3)) (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| 2)) (= (select |c_#valid| 3) 1) (not (= c_~v~0.base |c_ULTIMATE.start_main_~#t2~0#1.base|)) (= |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base| 3) (not (= 2 |c_ULTIMATE.start_main_~#t2~0#1.base|)) (= 66 (select .cse0 0)) (= c_~v~0.offset 0) (= |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| 0) (= 115 (select .cse0 3)) (not (= |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|)) (= c_~v~0.base |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|) (not (= 3 |c_ULTIMATE.start_main_~#t2~0#1.base|)) (= (select |c_#valid| 2) 1) (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| 3)) (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) (= |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| c_~v~0.offset) (forall ((v_ArrVal_146 Int) (v_ArrVal_144 Int) (v_ArrVal_142 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_33| Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_32| Int)) (or (not (<= (+ 2 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_33|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_33| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_32|)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~mem14#1|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 1) v_ArrVal_142) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_33| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_144) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_32| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_146)) c_~v~0.base) c_~v~0.offset)))) (<= 2 |c_ULTIMATE.start_main_~#t1~0#1.base|) (not (= c_~v~0.base 3)))) is different from false [2022-11-18 20:24:21,957 WARN L233 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 82 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:26:53,437 INFO L130 PetriNetUnfolder]: 71/553 cut-off events. [2022-11-18 20:26:53,437 INFO L131 PetriNetUnfolder]: For 760/762 co-relation queries the response was YES. [2022-11-18 20:26:53,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 553 events. 71/553 cut-off events. For 760/762 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3042 event pairs, 5 based on Foata normal form. 7/560 useless extension candidates. Maximal degree in co-relation 1145. Up to 60 conditions per place. [2022-11-18 20:26:53,442 INFO L137 encePairwiseOnDemand]: 66/90 looper letters, 60 selfloop transitions, 47 changer transitions 70/205 dead transitions. [2022-11-18 20:26:53,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 205 transitions, 1414 flow [2022-11-18 20:26:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:26:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 20:26:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1495 transitions. [2022-11-18 20:26:53,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2022-11-18 20:26:53,448 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1495 transitions. [2022-11-18 20:26:53,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1495 transitions. [2022-11-18 20:26:53,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:53,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1495 transitions. [2022-11-18 20:26:53,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 38.333333333333336) internal successors, (1495), 39 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:53,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 90.0) internal successors, (3600), 40 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:53,460 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 90.0) internal successors, (3600), 40 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:53,460 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 505 flow. Second operand 39 states and 1495 transitions. [2022-11-18 20:26:53,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 205 transitions, 1414 flow [2022-11-18 20:26:53,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 205 transitions, 1379 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-18 20:26:53,469 INFO L231 Difference]: Finished difference. Result has 180 places, 116 transitions, 677 flow [2022-11-18 20:26:53,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=677, PETRI_PLACES=180, PETRI_TRANSITIONS=116} [2022-11-18 20:26:53,470 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 101 predicate places. [2022-11-18 20:26:53,470 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 116 transitions, 677 flow [2022-11-18 20:26:53,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 37.82142857142857) internal successors, (2118), 56 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:53,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:53,471 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:53,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:26:53,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:53,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:26:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash -186483876, now seen corresponding path program 4 times [2022-11-18 20:26:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:53,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901858014] [2022-11-18 20:26:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:53,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:54,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:54,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901858014] [2022-11-18 20:26:54,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901858014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:26:54,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788725104] [2022-11-18 20:26:54,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:26:54,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:54,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:54,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:26:54,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:26:54,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:26:54,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:26:54,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 20:26:54,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:54,971 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:26:54,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:26:55,017 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:26:55,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:26:55,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:26:55,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:26:55,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:26:55,532 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:26:55,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-18 20:26:55,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:26:55,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:26:55,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:26:55,704 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:26:55,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 20:26:55,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:26:55,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:26:55,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:26:55,863 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:26:55,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 20:26:55,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:26:55,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:26:55,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:26:55,994 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:26:55,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 20:26:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:26:56,165 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:26:56,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 20:26:56,322 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:26:56,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 20:26:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:56,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:27:59,422 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_199 Int) (v_ArrVal_197 Int) (v_ArrVal_196 Int) (v_ArrVal_194 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_44| Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_43| Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_42| Int)) (or (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_43| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_42|)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 1) v_ArrVal_194) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_44| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_196) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_43| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_197) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_42| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_199)) c_~v~0.base) c_~v~0.offset)) (not (<= (+ 2 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_44|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_44| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_43|)))) is different from false [2022-11-18 20:28:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 11 refuted. 4 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-18 20:28:49,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788725104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:49,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:49,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 23] total 53 [2022-11-18 20:28:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036589704] [2022-11-18 20:28:49,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:49,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-18 20:28:49,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:49,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-18 20:28:49,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2379, Unknown=44, NotChecked=100, Total=2756 [2022-11-18 20:28:49,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 90 [2022-11-18 20:28:49,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 116 transitions, 677 flow. Second operand has 53 states, 53 states have (on average 38.0377358490566) internal successors, (2016), 53 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:49,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:49,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 90 [2022-11-18 20:28:49,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:52,712 INFO L130 PetriNetUnfolder]: 22/290 cut-off events. [2022-11-18 20:28:52,712 INFO L131 PetriNetUnfolder]: For 1337/1343 co-relation queries the response was YES. [2022-11-18 20:28:52,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 290 events. 22/290 cut-off events. For 1337/1343 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1081 event pairs, 4 based on Foata normal form. 12/302 useless extension candidates. Maximal degree in co-relation 1095. Up to 70 conditions per place. [2022-11-18 20:28:52,714 INFO L137 encePairwiseOnDemand]: 71/90 looper letters, 0 selfloop transitions, 0 changer transitions 130/130 dead transitions. [2022-11-18 20:28:52,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 130 transitions, 1031 flow [2022-11-18 20:28:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:28:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 20:28:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 949 transitions. [2022-11-18 20:28:52,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42177777777777775 [2022-11-18 20:28:52,718 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 949 transitions. [2022-11-18 20:28:52,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 949 transitions. [2022-11-18 20:28:52,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:52,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 949 transitions. [2022-11-18 20:28:52,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 37.96) internal successors, (949), 25 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:52,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 90.0) internal successors, (2340), 26 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:52,725 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 90.0) internal successors, (2340), 26 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:52,726 INFO L175 Difference]: Start difference. First operand has 180 places, 116 transitions, 677 flow. Second operand 25 states and 949 transitions. [2022-11-18 20:28:52,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 130 transitions, 1031 flow [2022-11-18 20:28:52,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 130 transitions, 839 flow, removed 72 selfloop flow, removed 30 redundant places. [2022-11-18 20:28:52,735 INFO L231 Difference]: Finished difference. Result has 152 places, 0 transitions, 0 flow [2022-11-18 20:28:52,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=0, PETRI_PLACES=152, PETRI_TRANSITIONS=0} [2022-11-18 20:28:52,736 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 73 predicate places. [2022-11-18 20:28:52,736 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 0 transitions, 0 flow [2022-11-18 20:28:52,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 38.0377358490566) internal successors, (2016), 53 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:52,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-18 20:28:52,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-18 20:28:52,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-18 20:28:52,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:52,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:52,946 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-11-18 20:28:52,949 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:28:52,950 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:28:52,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:28:52 BasicIcfg [2022-11-18 20:28:52,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:28:52,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:28:52,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:28:52,956 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:28:52,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:25" (3/4) ... [2022-11-18 20:28:52,970 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:28:52,982 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:28:52,982 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:28:52,987 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-18 20:28:52,988 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-18 20:28:52,988 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-18 20:28:52,988 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:28:52,988 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:28:53,022 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:28:53,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:28:53,023 INFO L158 Benchmark]: Toolchain (without parser) took 509322.02ms. Allocated memory was 107.0MB in the beginning and 339.7MB in the end (delta: 232.8MB). Free memory was 67.8MB in the beginning and 276.5MB in the end (delta: -208.7MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2022-11-18 20:28:53,023 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 107.0MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:28:53,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 760.13ms. Allocated memory is still 107.0MB. Free memory was 67.7MB in the beginning and 61.3MB in the end (delta: 6.4MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-11-18 20:28:53,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.82ms. Allocated memory is still 107.0MB. Free memory was 61.3MB in the beginning and 58.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:28:53,024 INFO L158 Benchmark]: Boogie Preprocessor took 30.22ms. Allocated memory is still 107.0MB. Free memory was 58.8MB in the beginning and 57.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:28:53,024 INFO L158 Benchmark]: RCFGBuilder took 572.94ms. Allocated memory was 107.0MB in the beginning and 134.2MB in the end (delta: 27.3MB). Free memory was 57.1MB in the beginning and 107.1MB in the end (delta: -50.0MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-18 20:28:53,025 INFO L158 Benchmark]: TraceAbstraction took 507833.21ms. Allocated memory was 134.2MB in the beginning and 339.7MB in the end (delta: 205.5MB). Free memory was 106.4MB in the beginning and 278.6MB in the end (delta: -172.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-11-18 20:28:53,026 INFO L158 Benchmark]: Witness Printer took 66.18ms. Allocated memory is still 339.7MB. Free memory was 278.6MB in the beginning and 276.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:28:53,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 107.0MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 760.13ms. Allocated memory is still 107.0MB. Free memory was 67.7MB in the beginning and 61.3MB in the end (delta: 6.4MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.82ms. Allocated memory is still 107.0MB. Free memory was 61.3MB in the beginning and 58.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.22ms. Allocated memory is still 107.0MB. Free memory was 58.8MB in the beginning and 57.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 572.94ms. Allocated memory was 107.0MB in the beginning and 134.2MB in the end (delta: 27.3MB). Free memory was 57.1MB in the beginning and 107.1MB in the end (delta: -50.0MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 507833.21ms. Allocated memory was 134.2MB in the beginning and 339.7MB in the end (delta: 205.5MB). Free memory was 106.4MB in the beginning and 278.6MB in the end (delta: -172.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Witness Printer took 66.18ms. Allocated memory is still 339.7MB. Free memory was 278.6MB in the beginning and 276.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1107]: 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 5 procedures, 114 locations, 3 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: 507.7s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 320.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2023 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2023 mSDsluCounter, 1327 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1545 IncrementalHoareTripleChecker+Unchecked, 1237 mSDsCounter, 380 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3117 IncrementalHoareTripleChecker+Invalid, 5042 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 380 mSolverCounterUnsat, 90 mSDtfsCounter, 3117 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 901 GetRequests, 574 SyntacticMatches, 31 SemanticMatches, 296 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 4889 ImplicationChecksByTransitivity, 483.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=677occurred in iteration=5, InterpolantAutomatonStates: 126, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 185.1s InterpolantComputationTime, 786 NumberOfCodeBlocks, 786 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1100 ConstructedInterpolants, 176 QuantifiedInterpolants, 17430 SizeOfPredicates, 63 NumberOfNonLiveVariables, 923 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 33/243 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! [2022-11-18 20:28:53,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08afbc08-de7a-440b-a4c6-b2582edc8e07/bin/uautomizer-TMbwUNV5ro/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