./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa --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 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:13:24,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:13:24,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:13:24,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:13:24,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:13:24,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:13:24,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:13:24,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:13:24,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:13:24,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:13:24,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:13:24,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:13:24,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:13:24,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:13:24,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:13:24,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:13:24,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:13:24,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:13:24,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:13:24,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:13:24,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:13:24,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:13:24,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:13:24,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:13:24,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:13:24,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:13:24,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:13:24,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:13:24,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:13:24,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:13:24,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:13:24,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:13:24,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:13:24,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:13:24,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:13:24,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:13:24,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:13:24,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:13:24,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:13:24,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:13:24,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:13:24,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:13:24,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:13:24,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:13:24,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:13:24,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:13:24,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:13:24,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:13:24,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:13:24,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:13:24,516 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:13:24,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:13:24,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:13:24,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:13:24,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:13:24,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:13:24,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:13:24,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:13:24,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:13:24,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:13:24,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:13:24,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:13:24,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:13:24,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:13:24,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:13:24,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:13:24,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:13:24,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:13:24,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:13:24,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:13:24,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:13:24,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:13:24,519 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:13:24,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:13:24,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:13:24,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:13:24,520 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_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 [2021-12-06 18:13:24,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:13:24,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:13:24,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:13:24,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:13:24,733 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:13:24,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2021-12-06 18:13:24,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/data/04488e402/95b98d03883a4dc9b959b2c0573f0b71/FLAGedb0d0ef2 [2021-12-06 18:13:25,145 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:13:25,145 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2021-12-06 18:13:25,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/data/04488e402/95b98d03883a4dc9b959b2c0573f0b71/FLAGedb0d0ef2 [2021-12-06 18:13:25,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/data/04488e402/95b98d03883a4dc9b959b2c0573f0b71 [2021-12-06 18:13:25,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:13:25,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:13:25,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:13:25,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:13:25,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:13:25,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19bb2b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25, skipping insertion in model container [2021-12-06 18:13:25,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:13:25,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:13:25,332 WARN L230 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_7313d44d-1bc9-4270-801c-57d9c9ce720e/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2021-12-06 18:13:25,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:13:25,348 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:13:25,370 WARN L230 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_7313d44d-1bc9-4270-801c-57d9c9ce720e/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2021-12-06 18:13:25,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:13:25,387 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:13:25,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25 WrapperNode [2021-12-06 18:13:25,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:13:25,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:13:25,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:13:25,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:13:25,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,417 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2021-12-06 18:13:25,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:13:25,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:13:25,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:13:25,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:13:25,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:13:25,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:13:25,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:13:25,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:13:25,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (1/1) ... [2021-12-06 18:13:25,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:13:25,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:25,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:13:25,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:13:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:13:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-06 18:13:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-06 18:13:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-06 18:13:25,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-06 18:13:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-06 18:13:25,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-06 18:13:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:13:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:13:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:13:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 18:13:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 18:13:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:13:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:13:25,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:13:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:13:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:13:25,504 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 18:13:25,578 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:13:25,580 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:13:25,748 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:13:25,799 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:13:25,799 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 18:13:25,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:13:25 BoogieIcfgContainer [2021-12-06 18:13:25,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:13:25,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:13:25,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:13:25,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:13:25,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:13:25" (1/3) ... [2021-12-06 18:13:25,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cfc9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:13:25, skipping insertion in model container [2021-12-06 18:13:25,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:25" (2/3) ... [2021-12-06 18:13:25,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cfc9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:13:25, skipping insertion in model container [2021-12-06 18:13:25,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:13:25" (3/3) ... [2021-12-06 18:13:25,807 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2021-12-06 18:13:25,812 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 18:13:25,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:13:25,812 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:13:25,812 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 18:13:25,839 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,839 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,840 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,840 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,840 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,840 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,845 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,846 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,846 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,846 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,847 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,847 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,847 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,847 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,848 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,848 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,848 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,848 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,850 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,850 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,850 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,853 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,853 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,855 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,855 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:13:25,858 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-06 18:13:25,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:13:25,899 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:13:25,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 18:13:25,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 149 transitions, 322 flow [2021-12-06 18:13:25,956 INFO L129 PetriNetUnfolder]: 10/146 cut-off events. [2021-12-06 18:13:25,956 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 18:13:25,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 10/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2021-12-06 18:13:25,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 149 transitions, 322 flow [2021-12-06 18:13:25,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 135 transitions, 288 flow [2021-12-06 18:13:25,984 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2021-12-06 18:13:25,984 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 18:13:25,985 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:13:25,985 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:25,986 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 18:13:25,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash 909462289, now seen corresponding path program 1 times [2021-12-06 18:13:25,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:25,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383527255] [2021-12-06 18:13:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:25,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:13:26,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:26,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383527255] [2021-12-06 18:13:26,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383527255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:26,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:26,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:13:26,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878703925] [2021-12-06 18:13:26,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:26,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:13:26,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:26,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:13:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:13:26,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 149 [2021-12-06 18:13:26,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:13:26,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 149 [2021-12-06 18:13:26,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:13:26,241 INFO L129 PetriNetUnfolder]: 20/193 cut-off events. [2021-12-06 18:13:26,241 INFO L130 PetriNetUnfolder]: For 28/29 co-relation queries the response was YES. [2021-12-06 18:13:26,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 193 events. 20/193 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 323 event pairs, 7 based on Foata normal form. 22/196 useless extension candidates. Maximal degree in co-relation 141. Up to 32 conditions per place. [2021-12-06 18:13:26,244 INFO L132 encePairwiseOnDemand]: 142/149 looper letters, 8 selfloop transitions, 0 changer transitions 4/128 dead transitions. [2021-12-06 18:13:26,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 290 flow [2021-12-06 18:13:26,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:13:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-06 18:13:26,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2021-12-06 18:13:26,254 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9429530201342282 [2021-12-06 18:13:26,255 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 281 transitions. [2021-12-06 18:13:26,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 281 transitions. [2021-12-06 18:13:26,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:13:26,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 281 transitions. [2021-12-06 18:13:26,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,266 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,267 INFO L186 Difference]: Start difference. First operand has 135 places, 135 transitions, 288 flow. Second operand 2 states and 281 transitions. [2021-12-06 18:13:26,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 290 flow [2021-12-06 18:13:26,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 128 transitions, 278 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-06 18:13:26,274 INFO L242 Difference]: Finished difference. Result has 130 places, 124 transitions, 254 flow [2021-12-06 18:13:26,275 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2021-12-06 18:13:26,278 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -5 predicate places. [2021-12-06 18:13:26,278 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 254 flow [2021-12-06 18:13:26,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,279 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:13:26,279 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:26,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:13:26,279 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 18:13:26,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:26,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1966050017, now seen corresponding path program 1 times [2021-12-06 18:13:26,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:26,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813155875] [2021-12-06 18:13:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:26,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:13:26,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:26,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813155875] [2021-12-06 18:13:26,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813155875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:26,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:26,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:13:26,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949285819] [2021-12-06 18:13:26,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:26,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:13:26,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:26,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:13:26,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:13:26,461 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 149 [2021-12-06 18:13:26,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:13:26,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 149 [2021-12-06 18:13:26,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:13:26,593 INFO L129 PetriNetUnfolder]: 155/542 cut-off events. [2021-12-06 18:13:26,593 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-12-06 18:13:26,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 542 events. 155/542 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2712 event pairs, 85 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 860. Up to 159 conditions per place. [2021-12-06 18:13:26,598 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 38 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2021-12-06 18:13:26,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 360 flow [2021-12-06 18:13:26,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:13:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 18:13:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2021-12-06 18:13:26,602 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7404921700223713 [2021-12-06 18:13:26,602 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2021-12-06 18:13:26,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2021-12-06 18:13:26,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:13:26,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2021-12-06 18:13:26,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,611 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,611 INFO L186 Difference]: Start difference. First operand has 130 places, 124 transitions, 254 flow. Second operand 6 states and 662 transitions. [2021-12-06 18:13:26,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 360 flow [2021-12-06 18:13:26,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 18:13:26,615 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 272 flow [2021-12-06 18:13:26,615 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2021-12-06 18:13:26,616 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -3 predicate places. [2021-12-06 18:13:26,616 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 272 flow [2021-12-06 18:13:26,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,617 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:13:26,617 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:26,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:13:26,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 18:13:26,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash 464005187, now seen corresponding path program 1 times [2021-12-06 18:13:26,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:26,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717540573] [2021-12-06 18:13:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:26,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:13:26,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:26,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717540573] [2021-12-06 18:13:26,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717540573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:26,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:26,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:13:26,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746867505] [2021-12-06 18:13:26,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:26,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:13:26,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:26,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:13:26,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:13:26,737 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2021-12-06 18:13:26,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:13:26,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2021-12-06 18:13:26,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:13:26,899 INFO L129 PetriNetUnfolder]: 175/543 cut-off events. [2021-12-06 18:13:26,900 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2021-12-06 18:13:26,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 543 events. 175/543 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2405 event pairs, 108 based on Foata normal form. 9/476 useless extension candidates. Maximal degree in co-relation 972. Up to 261 conditions per place. [2021-12-06 18:13:26,904 INFO L132 encePairwiseOnDemand]: 140/149 looper letters, 29 selfloop transitions, 6 changer transitions 14/143 dead transitions. [2021-12-06 18:13:26,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 416 flow [2021-12-06 18:13:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:13:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-06 18:13:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 937 transitions. [2021-12-06 18:13:26,907 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7860738255033557 [2021-12-06 18:13:26,907 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 937 transitions. [2021-12-06 18:13:26,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 937 transitions. [2021-12-06 18:13:26,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:13:26,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 937 transitions. [2021-12-06 18:13:26,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.125) internal successors, (937), 8 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,914 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,915 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 272 flow. Second operand 8 states and 937 transitions. [2021-12-06 18:13:26,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 416 flow [2021-12-06 18:13:26,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 143 transitions, 405 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 18:13:26,918 INFO L242 Difference]: Finished difference. Result has 138 places, 126 transitions, 288 flow [2021-12-06 18:13:26,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2021-12-06 18:13:26,919 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2021-12-06 18:13:26,919 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 288 flow [2021-12-06 18:13:26,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:13:26,920 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:26,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:13:26,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 18:13:26,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1074626539, now seen corresponding path program 1 times [2021-12-06 18:13:26,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:26,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353042883] [2021-12-06 18:13:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:26,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:13:27,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:27,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353042883] [2021-12-06 18:13:27,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353042883] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:13:27,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561398055] [2021-12-06 18:13:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:27,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:27,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:27,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:27,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:13:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:27,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:13:27,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:13:27,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:13:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:13:27,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561398055] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 18:13:27,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:13:27,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-12-06 18:13:27,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467439211] [2021-12-06 18:13:27,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:27,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:13:27,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:13:27,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:13:27,570 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2021-12-06 18:13:27,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:27,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:13:27,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2021-12-06 18:13:27,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:13:27,702 INFO L129 PetriNetUnfolder]: 129/490 cut-off events. [2021-12-06 18:13:27,702 INFO L130 PetriNetUnfolder]: For 62/76 co-relation queries the response was YES. [2021-12-06 18:13:27,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 490 events. 129/490 cut-off events. For 62/76 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2444 event pairs, 52 based on Foata normal form. 14/475 useless extension candidates. Maximal degree in co-relation 844. Up to 133 conditions per place. [2021-12-06 18:13:27,708 INFO L132 encePairwiseOnDemand]: 141/149 looper letters, 31 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2021-12-06 18:13:27,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 133 transitions, 384 flow [2021-12-06 18:13:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:13:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 18:13:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2021-12-06 18:13:27,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7813998082454459 [2021-12-06 18:13:27,712 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2021-12-06 18:13:27,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2021-12-06 18:13:27,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:13:27,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2021-12-06 18:13:27,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:27,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:27,719 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:27,720 INFO L186 Difference]: Start difference. First operand has 138 places, 126 transitions, 288 flow. Second operand 7 states and 815 transitions. [2021-12-06 18:13:27,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 133 transitions, 384 flow [2021-12-06 18:13:27,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 368 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-12-06 18:13:27,725 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 307 flow [2021-12-06 18:13:27,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2021-12-06 18:13:27,726 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 4 predicate places. [2021-12-06 18:13:27,727 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 307 flow [2021-12-06 18:13:27,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:27,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:13:27,728 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:27,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:13:27,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:27,930 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 18:13:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:27,932 INFO L85 PathProgramCache]: Analyzing trace with hash -856593035, now seen corresponding path program 1 times [2021-12-06 18:13:27,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:27,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402031427] [2021-12-06 18:13:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:27,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:13:28,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:28,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402031427] [2021-12-06 18:13:28,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402031427] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:13:28,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440807537] [2021-12-06 18:13:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:28,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:28,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:28,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:28,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:13:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:28,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 18:13:28,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:28,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:13:28,466 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:13:28,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 18:13:28,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:13:28,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:28,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 21 [2021-12-06 18:13:28,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:28,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 21 [2021-12-06 18:13:28,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 21 [2021-12-06 18:13:29,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 18:13:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:13:29,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:13:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:13:29,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440807537] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:13:29,519 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:13:29,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 9] total 33 [2021-12-06 18:13:29,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232863750] [2021-12-06 18:13:29,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:13:29,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 18:13:29,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 18:13:29,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 18:13:29,527 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 149 [2021-12-06 18:13:29,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 307 flow. Second operand has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:29,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:13:29,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 149 [2021-12-06 18:13:29,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:13:31,932 INFO L129 PetriNetUnfolder]: 2340/4572 cut-off events. [2021-12-06 18:13:31,932 INFO L130 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2021-12-06 18:13:31,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10019 conditions, 4572 events. 2340/4572 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32561 event pairs, 149 based on Foata normal form. 4/4535 useless extension candidates. Maximal degree in co-relation 10010. Up to 469 conditions per place. [2021-12-06 18:13:31,946 INFO L132 encePairwiseOnDemand]: 121/149 looper letters, 0 selfloop transitions, 0 changer transitions 345/345 dead transitions. [2021-12-06 18:13:31,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 345 transitions, 1545 flow [2021-12-06 18:13:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-06 18:13:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-12-06 18:13:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2611 transitions. [2021-12-06 18:13:31,963 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4172259507829978 [2021-12-06 18:13:31,963 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2611 transitions. [2021-12-06 18:13:31,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2611 transitions. [2021-12-06 18:13:31,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:13:31,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2611 transitions. [2021-12-06 18:13:31,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 62.166666666666664) internal successors, (2611), 42 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:31,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:31,982 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:31,982 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 307 flow. Second operand 42 states and 2611 transitions. [2021-12-06 18:13:31,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 345 transitions, 1545 flow [2021-12-06 18:13:31,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 345 transitions, 1514 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 18:13:31,991 INFO L242 Difference]: Finished difference. Result has 173 places, 0 transitions, 0 flow [2021-12-06 18:13:31,991 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=0, PETRI_PLACES=173, PETRI_TRANSITIONS=0} [2021-12-06 18:13:31,992 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 38 predicate places. [2021-12-06 18:13:31,992 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 0 transitions, 0 flow [2021-12-06 18:13:31,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:31,994 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-06 18:13:31,995 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-06 18:13:31,995 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-06 18:13:31,995 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-06 18:13:32,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:13:32,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:32,206 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-12-06 18:13:32,212 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 18:13:32,212 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:13:32,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:13:32 BasicIcfg [2021-12-06 18:13:32,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:13:32,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:13:32,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:13:32,226 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:13:32,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:13:25" (3/4) ... [2021-12-06 18:13:32,234 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 18:13:32,248 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-06 18:13:32,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-06 18:13:32,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-06 18:13:32,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-12-06 18:13:32,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 18:13:32,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 18:13:32,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 18:13:32,315 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:13:32,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:13:32,316 INFO L158 Benchmark]: Toolchain (without parser) took 7149.20ms. Allocated memory was 88.1MB in the beginning and 192.9MB in the end (delta: 104.9MB). Free memory was 52.4MB in the beginning and 127.4MB in the end (delta: -75.1MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2021-12-06 18:13:32,316 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:13:32,316 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.22ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 52.2MB in the beginning and 83.9MB in the end (delta: -31.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-12-06 18:13:32,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.12ms. Allocated memory is still 109.1MB. Free memory was 83.9MB in the beginning and 82.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:13:32,317 INFO L158 Benchmark]: Boogie Preprocessor took 22.63ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 80.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:13:32,317 INFO L158 Benchmark]: RCFGBuilder took 360.44ms. Allocated memory is still 109.1MB. Free memory was 80.6MB in the beginning and 64.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 18:13:32,317 INFO L158 Benchmark]: TraceAbstraction took 6421.18ms. Allocated memory was 109.1MB in the beginning and 192.9MB in the end (delta: 83.9MB). Free memory was 63.8MB in the beginning and 131.6MB in the end (delta: -67.8MB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. [2021-12-06 18:13:32,318 INFO L158 Benchmark]: Witness Printer took 90.21ms. Allocated memory is still 192.9MB. Free memory was 131.6MB in the beginning and 127.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 18:13:32,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.22ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 52.2MB in the beginning and 83.9MB in the end (delta: -31.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.12ms. Allocated memory is still 109.1MB. Free memory was 83.9MB in the beginning and 82.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.63ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 80.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 360.44ms. Allocated memory is still 109.1MB. Free memory was 80.6MB in the beginning and 64.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6421.18ms. Allocated memory was 109.1MB in the beginning and 192.9MB in the end (delta: 83.9MB). Free memory was 63.8MB in the beginning and 131.6MB in the end (delta: -67.8MB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. * Witness Printer took 90.21ms. Allocated memory is still 192.9MB. Free memory was 131.6MB in the beginning and 127.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 165 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1320 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1320 mSDsluCounter, 859 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 986 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1306 IncrementalHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 98 mSDtfsCounter, 1306 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=4, InterpolantAutomatonStates: 65, 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, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 812 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1046 ConstructedInterpolants, 0 QuantifiedInterpolants, 3849 SizeOfPredicates, 32 NumberOfNonLiveVariables, 569 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 8/16 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! [2021-12-06 18:13:32,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7313d44d-1bc9-4270-801c-57d9c9ce720e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE