./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/condvar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/condvar.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF --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 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:28:21,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:28:21,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:28:21,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:28:21,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:28:21,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:28:21,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:28:21,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:28:21,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:28:21,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:28:21,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:28:21,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:28:21,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:28:21,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:28:21,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:28:21,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:28:21,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:28:21,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:28:21,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:28:21,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:28:21,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:28:21,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:28:21,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:28:21,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:28:21,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:28:21,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:28:21,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:28:21,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:28:21,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:28:21,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:28:21,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:28:21,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:28:21,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:28:21,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:28:21,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:28:21,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:28:21,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:28:21,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:28:21,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:28:21,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:28:21,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:28:21,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:28:21,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:28:21,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:28:21,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:28:21,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:28:21,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:28:21,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:28:21,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:28:21,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:28:21,620 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:28:21,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:28:21,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:28:21,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:28:21,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:28:21,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:28:21,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:28:21,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:28:21,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:28:21,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:28:21,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:28:21,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:28:21,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:28:21,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:28:21,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:28:21,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:28:21,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:28:21,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:28:21,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:28:21,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:28:21,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:28:21,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:28:21,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:28:21,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:28:21,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:28:21,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:28:21,628 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_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a [2021-11-20 06:28:21,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:28:21,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:28:21,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:28:21,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:28:21,891 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:28:21,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/pthread-divine/condvar.i [2021-11-20 06:28:21,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/data/5d3beda59/93d3d6d3d2fa43d6ab500b39aedb1cdb/FLAG01186a38d [2021-11-20 06:28:22,585 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:28:22,586 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/sv-benchmarks/c/pthread-divine/condvar.i [2021-11-20 06:28:22,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/data/5d3beda59/93d3d6d3d2fa43d6ab500b39aedb1cdb/FLAG01186a38d [2021-11-20 06:28:22,845 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/data/5d3beda59/93d3d6d3d2fa43d6ab500b39aedb1cdb [2021-11-20 06:28:22,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:28:22,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:28:22,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:28:22,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:28:22,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:28:22,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:28:22" (1/1) ... [2021-11-20 06:28:22,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b22cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:22, skipping insertion in model container [2021-11-20 06:28:22,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:28:22" (1/1) ... [2021-11-20 06:28:22,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:28:22,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:28:23,105 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 06:28:23,340 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_0a629b97-b556-49c4-9712-d2966c8bf3a1/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2021-11-20 06:28:23,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:28:23,364 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:28:23,380 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 06:28:23,419 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_0a629b97-b556-49c4-9712-d2966c8bf3a1/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2021-11-20 06:28:23,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:28:23,487 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:28:23,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23 WrapperNode [2021-11-20 06:28:23,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:28:23,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:28:23,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:28:23,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:28:23,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,558 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-11-20 06:28:23,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:28:23,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:28:23,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:28:23,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:28:23,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:28:23,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:28:23,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:28:23,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:28:23,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (1/1) ... [2021-11-20 06:28:23,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:28:23,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:28:23,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:28:23,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:28:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:28:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:28:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-20 06:28:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:28:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:28:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:28:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:28:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-11-20 06:28:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-11-20 06:28:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:28:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:28:23,710 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 06:28:23,874 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:28:23,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:28:24,085 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:28:24,093 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:28:24,093 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:28:24,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:28:24 BoogieIcfgContainer [2021-11-20 06:28:24,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:28:24,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:28:24,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:28:24,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:28:24,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:28:22" (1/3) ... [2021-11-20 06:28:24,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bed03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:28:24, skipping insertion in model container [2021-11-20 06:28:24,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:28:23" (2/3) ... [2021-11-20 06:28:24,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bed03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:28:24, skipping insertion in model container [2021-11-20 06:28:24,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:28:24" (3/3) ... [2021-11-20 06:28:24,103 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2021-11-20 06:28:24,108 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 06:28:24,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:28:24,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:28:24,109 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 06:28:24,134 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,134 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,134 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,134 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,135 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,135 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,135 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,135 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,136 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,136 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,136 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,136 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,137 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,137 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,138 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,138 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,138 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,138 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,139 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,139 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,142 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,142 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,142 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,142 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,143 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,143 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:28:24,147 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-20 06:28:24,193 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:28:24,200 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 [2021-11-20 06:28:24,201 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 06:28:24,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 78 transitions, 164 flow [2021-11-20 06:28:24,300 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-11-20 06:28:24,301 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-20 06:28:24,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 5/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2021-11-20 06:28:24,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 78 transitions, 164 flow [2021-11-20 06:28:24,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 70 transitions, 143 flow [2021-11-20 06:28:24,345 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2021-11-20 06:28:24,346 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 06:28:24,346 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:28:24,347 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] [2021-11-20 06:28:24,347 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:28:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:28:24,355 INFO L85 PathProgramCache]: Analyzing trace with hash 533595711, now seen corresponding path program 1 times [2021-11-20 06:28:24,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:28:24,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293338205] [2021-11-20 06:28:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:28:24,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:28:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:28:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:28:24,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:28:24,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293338205] [2021-11-20 06:28:24,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293338205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:28:24,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:28:24,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:28:24,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331359189] [2021-11-20 06:28:24,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:28:24,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:28:24,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:28:24,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:28:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:28:24,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 78 [2021-11-20 06:28:24,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2021-11-20 06:28:24,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:28:24,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 78 [2021-11-20 06:28:24,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:28:24,808 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2021-11-20 06:28:24,809 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-20 06:28:24,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 70 events. 3/70 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 3/70 useless extension candidates. Maximal degree in co-relation 33. Up to 5 conditions per place. [2021-11-20 06:28:24,812 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 4 selfloop transitions, 2 changer transitions 4/68 dead transitions. [2021-11-20 06:28:24,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 151 flow [2021-11-20 06:28:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:28:24,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:28:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2021-11-20 06:28:24,827 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9316239316239316 [2021-11-20 06:28:24,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2021-11-20 06:28:24,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2021-11-20 06:28:24,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:28:24,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2021-11-20 06:28:24,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-11-20 06:28:24,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-11-20 06:28:24,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-11-20 06:28:24,850 INFO L186 Difference]: Start difference. First operand has 69 places, 70 transitions, 143 flow. Second operand 3 states and 218 transitions. [2021-11-20 06:28:24,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 151 flow [2021-11-20 06:28:24,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 06:28:24,866 INFO L242 Difference]: Finished difference. Result has 71 places, 63 transitions, 136 flow [2021-11-20 06:28:24,868 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2021-11-20 06:28:24,872 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2021-11-20 06:28:24,874 INFO L470 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 136 flow [2021-11-20 06:28:24,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2021-11-20 06:28:24,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:28:24,874 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] [2021-11-20 06:28:24,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:28:24,881 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:28:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:28:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash 986944085, now seen corresponding path program 1 times [2021-11-20 06:28:24,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:28:24,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686722336] [2021-11-20 06:28:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:28:24,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:28:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:28:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:28:24,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:28:24,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686722336] [2021-11-20 06:28:24,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686722336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:28:24,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:28:24,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:28:24,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550428040] [2021-11-20 06:28:24,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:28:24,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:28:24,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:28:24,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:28:24,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:28:24,997 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 78 [2021-11-20 06:28:24,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2021-11-20 06:28:24,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:28:24,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 78 [2021-11-20 06:28:24,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:28:25,049 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-11-20 06:28:25,052 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-20 06:28:25,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 67 events. 2/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 43. Up to 9 conditions per place. [2021-11-20 06:28:25,053 INFO L132 encePairwiseOnDemand]: 75/78 looper letters, 10 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2021-11-20 06:28:25,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 168 flow [2021-11-20 06:28:25,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:28:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:28:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2021-11-20 06:28:25,060 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9017094017094017 [2021-11-20 06:28:25,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2021-11-20 06:28:25,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2021-11-20 06:28:25,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:28:25,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2021-11-20 06:28:25,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-11-20 06:28:25,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-11-20 06:28:25,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-11-20 06:28:25,067 INFO L186 Difference]: Start difference. First operand has 71 places, 63 transitions, 136 flow. Second operand 3 states and 211 transitions. [2021-11-20 06:28:25,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 168 flow [2021-11-20 06:28:25,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 06:28:25,071 INFO L242 Difference]: Finished difference. Result has 68 places, 64 transitions, 144 flow [2021-11-20 06:28:25,072 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2021-11-20 06:28:25,074 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2021-11-20 06:28:25,074 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 144 flow [2021-11-20 06:28:25,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2021-11-20 06:28:25,075 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:28:25,075 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] [2021-11-20 06:28:25,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:28:25,075 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:28:25,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:28:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1983761035, now seen corresponding path program 1 times [2021-11-20 06:28:25,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:28:25,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595748327] [2021-11-20 06:28:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:28:25,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:28:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:28:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:28:25,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:28:25,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595748327] [2021-11-20 06:28:25,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595748327] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:28:25,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200300650] [2021-11-20 06:28:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:28:25,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:28:25,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:28:25,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:28:25,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:28:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:28:25,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:28:25,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:28:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:28:25,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:28:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:28:25,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200300650] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:28:25,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:28:25,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-20 06:28:25,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386895985] [2021-11-20 06:28:25,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:28:25,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:28:25,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:28:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:28:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:28:25,541 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2021-11-20 06:28:25,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 144 flow. Second operand has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 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) [2021-11-20 06:28:25,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:28:25,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2021-11-20 06:28:25,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:28:25,614 INFO L129 PetriNetUnfolder]: 2/74 cut-off events. [2021-11-20 06:28:25,614 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-20 06:28:25,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 74 events. 2/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2021-11-20 06:28:25,616 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 11 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2021-11-20 06:28:25,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 206 flow [2021-11-20 06:28:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:28:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 06:28:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 607 transitions. [2021-11-20 06:28:25,619 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8646723646723646 [2021-11-20 06:28:25,619 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 607 transitions. [2021-11-20 06:28:25,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 607 transitions. [2021-11-20 06:28:25,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:28:25,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 607 transitions. [2021-11-20 06:28:25,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.44444444444444) internal successors, (607), 9 states have internal predecessors, (607), 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) [2021-11-20 06:28:25,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2021-11-20 06:28:25,626 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2021-11-20 06:28:25,626 INFO L186 Difference]: Start difference. First operand has 68 places, 64 transitions, 144 flow. Second operand 9 states and 607 transitions. [2021-11-20 06:28:25,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 206 flow [2021-11-20 06:28:25,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 06:28:25,630 INFO L242 Difference]: Finished difference. Result has 78 places, 70 transitions, 192 flow [2021-11-20 06:28:25,630 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2021-11-20 06:28:25,631 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2021-11-20 06:28:25,631 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 192 flow [2021-11-20 06:28:25,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 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) [2021-11-20 06:28:25,632 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:28:25,632 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:28:25,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:28:25,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:28:25,861 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:28:25,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:28:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1097801271, now seen corresponding path program 2 times [2021-11-20 06:28:25,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:28:25,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000132142] [2021-11-20 06:28:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:28:25,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:28:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:28:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:28:25,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:28:25,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000132142] [2021-11-20 06:28:25,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000132142] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:28:25,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809499070] [2021-11-20 06:28:25,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:28:25,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:28:25,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:28:25,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:28:25,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:28:26,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:28:26,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:28:26,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:28:26,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:28:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:28:26,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:28:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:28:26,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809499070] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:28:26,400 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:28:26,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-11-20 06:28:26,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439015007] [2021-11-20 06:28:26,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:28:26,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:28:26,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:28:26,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:28:26,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:28:26,405 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2021-11-20 06:28:26,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 192 flow. Second operand has 18 states, 18 states have (on average 67.27777777777777) internal successors, (1211), 18 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:28:26,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:28:26,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2021-11-20 06:28:26,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:28:26,633 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2021-11-20 06:28:26,634 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-11-20 06:28:26,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 94 events. 2/94 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 4/98 useless extension candidates. Maximal degree in co-relation 145. Up to 11 conditions per place. [2021-11-20 06:28:26,638 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 19 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2021-11-20 06:28:26,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 380 flow [2021-11-20 06:28:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:28:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:28:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1409 transitions. [2021-11-20 06:28:26,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8601953601953602 [2021-11-20 06:28:26,644 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1409 transitions. [2021-11-20 06:28:26,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1409 transitions. [2021-11-20 06:28:26,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:28:26,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1409 transitions. [2021-11-20 06:28:26,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.0952380952381) internal successors, (1409), 21 states have internal predecessors, (1409), 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) [2021-11-20 06:28:26,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 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) [2021-11-20 06:28:26,655 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 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) [2021-11-20 06:28:26,655 INFO L186 Difference]: Start difference. First operand has 78 places, 70 transitions, 192 flow. Second operand 21 states and 1409 transitions. [2021-11-20 06:28:26,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 380 flow [2021-11-20 06:28:26,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 366 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-11-20 06:28:26,664 INFO L242 Difference]: Finished difference. Result has 102 places, 83 transitions, 316 flow [2021-11-20 06:28:26,664 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=316, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2021-11-20 06:28:26,666 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2021-11-20 06:28:26,666 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 316 flow [2021-11-20 06:28:26,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.27777777777777) internal successors, (1211), 18 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:28:26,667 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:28:26,667 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:28:26,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:28:26,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:28:26,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:28:26,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:28:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash -468461195, now seen corresponding path program 3 times [2021-11-20 06:28:26,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:28:26,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991714337] [2021-11-20 06:28:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:28:26,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:28:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:28:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:28:27,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:28:27,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991714337] [2021-11-20 06:28:27,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991714337] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:28:27,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801485731] [2021-11-20 06:28:27,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:28:27,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:28:27,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:28:27,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:28:27,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:28:27,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 06:28:27,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:28:27,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:28:27,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:28:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-20 06:28:27,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:28:27,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801485731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:28:27,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:28:27,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2021-11-20 06:28:27,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211930945] [2021-11-20 06:28:27,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:28:27,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:28:27,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:28:27,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:28:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-11-20 06:28:27,521 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 78 [2021-11-20 06:28:27,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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) [2021-11-20 06:28:27,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:28:27,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 78 [2021-11-20 06:28:27,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:28:27,629 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-11-20 06:28:27,629 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-11-20 06:28:27,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 92 events. 2/92 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 175. Up to 11 conditions per place. [2021-11-20 06:28:27,631 INFO L132 encePairwiseOnDemand]: 70/78 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2021-11-20 06:28:27,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 83 transitions, 382 flow [2021-11-20 06:28:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:28:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 06:28:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2021-11-20 06:28:27,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8133903133903134 [2021-11-20 06:28:27,634 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2021-11-20 06:28:27,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2021-11-20 06:28:27,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:28:27,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2021-11-20 06:28:27,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.44444444444444) internal successors, (571), 9 states have internal predecessors, (571), 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) [2021-11-20 06:28:27,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2021-11-20 06:28:27,639 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2021-11-20 06:28:27,640 INFO L186 Difference]: Start difference. First operand has 102 places, 83 transitions, 316 flow. Second operand 9 states and 571 transitions. [2021-11-20 06:28:27,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 83 transitions, 382 flow [2021-11-20 06:28:27,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 83 transitions, 358 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-11-20 06:28:27,649 INFO L242 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2021-11-20 06:28:27,650 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2021-11-20 06:28:27,652 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2021-11-20 06:28:27,652 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2021-11-20 06:28:27,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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) [2021-11-20 06:28:27,655 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2021-11-20 06:28:27,656 INFO L764 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-20 06:28:27,660 INFO L764 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-20 06:28:27,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:28:27,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:28:27,880 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2021-11-20 06:28:27,884 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-20 06:28:27,884 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:28:27,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:28:27 BasicIcfg [2021-11-20 06:28:27,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:28:27,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:28:27,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:28:27,888 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:28:27,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:28:24" (3/4) ... [2021-11-20 06:28:27,891 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:28:27,897 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2021-11-20 06:28:27,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-20 06:28:27,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-20 06:28:27,903 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 06:28:27,903 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 06:28:27,949 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:28:27,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:28:27,950 INFO L158 Benchmark]: Toolchain (without parser) took 5101.37ms. Allocated memory was 115.3MB in the beginning and 146.8MB in the end (delta: 31.5MB). Free memory was 86.0MB in the beginning and 89.5MB in the end (delta: -3.4MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2021-11-20 06:28:27,951 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:28:27,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.21ms. Allocated memory is still 115.3MB. Free memory was 85.9MB in the beginning and 66.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-20 06:28:27,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.66ms. Allocated memory is still 115.3MB. Free memory was 66.6MB in the beginning and 64.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:28:27,952 INFO L158 Benchmark]: Boogie Preprocessor took 52.74ms. Allocated memory is still 115.3MB. Free memory was 64.6MB in the beginning and 63.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:28:27,952 INFO L158 Benchmark]: RCFGBuilder took 482.12ms. Allocated memory is still 115.3MB. Free memory was 63.2MB in the beginning and 51.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:28:27,953 INFO L158 Benchmark]: TraceAbstraction took 3790.75ms. Allocated memory was 115.3MB in the beginning and 146.8MB in the end (delta: 31.5MB). Free memory was 51.1MB in the beginning and 92.5MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:28:27,953 INFO L158 Benchmark]: Witness Printer took 61.47ms. Allocated memory is still 146.8MB. Free memory was 92.5MB in the beginning and 89.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:28:27,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.21ms. Allocated memory is still 115.3MB. Free memory was 85.9MB in the beginning and 66.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.66ms. Allocated memory is still 115.3MB. Free memory was 66.6MB in the beginning and 64.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.74ms. Allocated memory is still 115.3MB. Free memory was 64.6MB in the beginning and 63.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.12ms. Allocated memory is still 115.3MB. Free memory was 63.2MB in the beginning and 51.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3790.75ms. Allocated memory was 115.3MB in the beginning and 146.8MB in the end (delta: 31.5MB). Free memory was 51.1MB in the beginning and 92.5MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 61.47ms. Allocated memory is still 146.8MB. Free memory was 92.5MB in the beginning and 89.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. 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: 706]: 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 3 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 19 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 392 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=4, InterpolantAutomatonStates: 45, 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, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 529 NumberOfCodeBlocks, 504 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 645 ConstructedInterpolants, 0 QuantifiedInterpolants, 925 SizeOfPredicates, 12 NumberOfNonLiveVariables, 423 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 112/281 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! [2021-11-20 06:28:28,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a629b97-b556-49c4-9712-d2966c8bf3a1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE