./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:59:29,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:59:29,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:59:29,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:59:29,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:59:29,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:59:29,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:59:29,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:59:29,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:59:29,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:59:29,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:59:29,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:59:29,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:59:29,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:59:29,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:59:29,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:59:29,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:59:29,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:59:29,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:59:29,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:59:29,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:59:29,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:59:29,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:59:29,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:59:29,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:59:29,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:59:29,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:59:29,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:59:29,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:59:29,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:59:29,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:59:29,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:59:29,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:59:29,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:59:29,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:59:29,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:59:29,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:59:29,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:59:29,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:59:29,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:59:29,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:59:29,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:59:29,608 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:59:29,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:59:29,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:59:29,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:59:29,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:59:29,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:59:29,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:59:29,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:59:29,610 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:59:29,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:59:29,611 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:59:29,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:59:29,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:59:29,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:59:29,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:59:29,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:59:29,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:59:29,612 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:59:29,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:59:29,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:59:29,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:59:29,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:59:29,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:59:29,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:59:29,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:59:29,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:59:29,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:59:29,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:59:29,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:59:29,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:59:29,614 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:59:29,614 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:59:29,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:59:29,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:59:29,614 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_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 [2021-12-06 21:59:29,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:59:29,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:59:29,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:59:29,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:59:29,832 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:59:29,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-12-06 21:59:29,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/data/6f721ffa5/a476d9d35e15425c8fe76f84973420bb/FLAG8f47ccc6f [2021-12-06 21:59:30,240 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:59:30,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-12-06 21:59:30,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/data/6f721ffa5/a476d9d35e15425c8fe76f84973420bb/FLAG8f47ccc6f [2021-12-06 21:59:30,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/data/6f721ffa5/a476d9d35e15425c8fe76f84973420bb [2021-12-06 21:59:30,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:59:30,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:59:30,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:59:30,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:59:30,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:59:30,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0aef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30, skipping insertion in model container [2021-12-06 21:59:30,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:59:30,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:59:30,406 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_4d537899-ff9e-41cd-a846-9ecdf839039c/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-12-06 21:59:30,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:59:30,415 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:59:30,430 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_4d537899-ff9e-41cd-a846-9ecdf839039c/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-12-06 21:59:30,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:59:30,442 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:59:30,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30 WrapperNode [2021-12-06 21:59:30,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:59:30,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:59:30,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:59:30,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:59:30,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,469 INFO L137 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-12-06 21:59:30,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:59:30,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:59:30,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:59:30,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:59:30,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:59:30,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:59:30,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:59:30,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:59:30,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (1/1) ... [2021-12-06 21:59:30,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:59:30,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:59:30,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:59:30,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:59:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:59:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-06 21:59:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-06 21:59:30,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-06 21:59:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-06 21:59:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-06 21:59:30,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-06 21:59:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:59:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:59:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:59:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 21:59:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 21:59:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:59:30,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:59:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 21:59:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:59:30,554 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 21:59:30,616 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:59:30,618 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:59:30,760 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:59:30,787 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:59:30,788 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 21:59:30,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:59:30 BoogieIcfgContainer [2021-12-06 21:59:30,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:59:30,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:59:30,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:59:30,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:59:30,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:59:30" (1/3) ... [2021-12-06 21:59:30,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791569e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:59:30, skipping insertion in model container [2021-12-06 21:59:30,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:30" (2/3) ... [2021-12-06 21:59:30,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791569e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:59:30, skipping insertion in model container [2021-12-06 21:59:30,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:59:30" (3/3) ... [2021-12-06 21:59:30,799 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2021-12-06 21:59:30,804 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 21:59:30,804 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:59:30,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:59:30,805 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 21:59:30,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:59:30,854 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-06 21:59:30,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:59:30,911 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 21:59:30,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 21:59:30,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 212 flow [2021-12-06 21:59:30,976 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2021-12-06 21:59:30,976 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 21:59:30,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 2/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2021-12-06 21:59:30,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 212 flow [2021-12-06 21:59:30,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 80 transitions, 178 flow [2021-12-06 21:59:31,005 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-12-06 21:59:31,005 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 21:59:31,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:59:31,006 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:31,006 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:59:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:31,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1985561410, now seen corresponding path program 1 times [2021-12-06 21:59:31,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:31,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608260534] [2021-12-06 21:59:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:31,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:31,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:31,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608260534] [2021-12-06 21:59:31,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608260534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:31,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:31,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:59:31,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216725202] [2021-12-06 21:59:31,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:31,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:59:31,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:31,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:59:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:59:31,711 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-06 21:59:31,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:31,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:59:31,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-06 21:59:31,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:59:32,207 INFO L129 PetriNetUnfolder]: 47/216 cut-off events. [2021-12-06 21:59:32,207 INFO L130 PetriNetUnfolder]: For 79/85 co-relation queries the response was YES. [2021-12-06 21:59:32,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 216 events. 47/216 cut-off events. For 79/85 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs, 23 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 246. Up to 85 conditions per place. [2021-12-06 21:59:32,211 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 27 selfloop transitions, 15 changer transitions 13/105 dead transitions. [2021-12-06 21:59:32,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 359 flow [2021-12-06 21:59:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 21:59:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 21:59:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 878 transitions. [2021-12-06 21:59:32,229 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7184942716857611 [2021-12-06 21:59:32,230 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 878 transitions. [2021-12-06 21:59:32,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 878 transitions. [2021-12-06 21:59:32,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:59:32,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 878 transitions. [2021-12-06 21:59:32,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.53846153846153) internal successors, (878), 13 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:32,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:32,250 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:32,252 INFO L186 Difference]: Start difference. First operand has 88 places, 80 transitions, 178 flow. Second operand 13 states and 878 transitions. [2021-12-06 21:59:32,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 359 flow [2021-12-06 21:59:32,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 105 transitions, 333 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-06 21:59:32,259 INFO L242 Difference]: Finished difference. Result has 99 places, 88 transitions, 249 flow [2021-12-06 21:59:32,261 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=249, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2021-12-06 21:59:32,264 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2021-12-06 21:59:32,265 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 249 flow [2021-12-06 21:59:32,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:32,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:59:32,266 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:32,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:59:32,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:59:32,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:32,267 INFO L85 PathProgramCache]: Analyzing trace with hash 653009678, now seen corresponding path program 2 times [2021-12-06 21:59:32,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:32,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145496298] [2021-12-06 21:59:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:32,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:32,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:32,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145496298] [2021-12-06 21:59:32,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145496298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:32,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:32,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:59:32,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145391603] [2021-12-06 21:59:32,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:32,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:59:32,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:32,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:59:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:59:32,545 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-06 21:59:32,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:32,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:59:32,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-06 21:59:32,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:59:32,911 INFO L129 PetriNetUnfolder]: 61/265 cut-off events. [2021-12-06 21:59:32,912 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2021-12-06 21:59:32,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 265 events. 61/265 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1017 event pairs, 1 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 554. Up to 71 conditions per place. [2021-12-06 21:59:32,915 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 41 selfloop transitions, 19 changer transitions 19/129 dead transitions. [2021-12-06 21:59:32,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 562 flow [2021-12-06 21:59:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 21:59:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 21:59:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 885 transitions. [2021-12-06 21:59:32,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7242225859247136 [2021-12-06 21:59:32,919 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 885 transitions. [2021-12-06 21:59:32,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 885 transitions. [2021-12-06 21:59:32,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:59:32,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 885 transitions. [2021-12-06 21:59:32,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.07692307692308) internal successors, (885), 13 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:32,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:32,927 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:32,927 INFO L186 Difference]: Start difference. First operand has 99 places, 88 transitions, 249 flow. Second operand 13 states and 885 transitions. [2021-12-06 21:59:32,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 562 flow [2021-12-06 21:59:32,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 129 transitions, 548 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-12-06 21:59:32,935 INFO L242 Difference]: Finished difference. Result has 105 places, 101 transitions, 373 flow [2021-12-06 21:59:32,935 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=373, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2021-12-06 21:59:32,936 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 17 predicate places. [2021-12-06 21:59:32,936 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 373 flow [2021-12-06 21:59:32,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:32,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:59:32,937 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:32,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:59:32,937 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:59:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2028188250, now seen corresponding path program 3 times [2021-12-06 21:59:32,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:32,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085120843] [2021-12-06 21:59:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:32,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:33,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:33,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085120843] [2021-12-06 21:59:33,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085120843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:33,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:33,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:59:33,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637374489] [2021-12-06 21:59:33,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:33,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:59:33,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:33,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:59:33,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:59:33,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-06 21:59:33,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 373 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:33,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:59:33,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-06 21:59:33,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:59:33,557 INFO L129 PetriNetUnfolder]: 53/276 cut-off events. [2021-12-06 21:59:33,557 INFO L130 PetriNetUnfolder]: For 212/220 co-relation queries the response was YES. [2021-12-06 21:59:33,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 276 events. 53/276 cut-off events. For 212/220 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1173 event pairs, 4 based on Foata normal form. 4/278 useless extension candidates. Maximal degree in co-relation 666. Up to 49 conditions per place. [2021-12-06 21:59:33,560 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 24 selfloop transitions, 15 changer transitions 41/130 dead transitions. [2021-12-06 21:59:33,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 672 flow [2021-12-06 21:59:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 21:59:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 21:59:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 883 transitions. [2021-12-06 21:59:33,563 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7225859247135843 [2021-12-06 21:59:33,563 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 883 transitions. [2021-12-06 21:59:33,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 883 transitions. [2021-12-06 21:59:33,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:59:33,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 883 transitions. [2021-12-06 21:59:33,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.92307692307692) internal successors, (883), 13 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:33,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:33,574 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:33,574 INFO L186 Difference]: Start difference. First operand has 105 places, 101 transitions, 373 flow. Second operand 13 states and 883 transitions. [2021-12-06 21:59:33,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 672 flow [2021-12-06 21:59:33,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 619 flow, removed 20 selfloop flow, removed 6 redundant places. [2021-12-06 21:59:33,579 INFO L242 Difference]: Finished difference. Result has 113 places, 85 transitions, 302 flow [2021-12-06 21:59:33,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2021-12-06 21:59:33,580 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 25 predicate places. [2021-12-06 21:59:33,580 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 302 flow [2021-12-06 21:59:33,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:33,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:59:33,581 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:33,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:59:33,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:59:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:33,582 INFO L85 PathProgramCache]: Analyzing trace with hash -203117776, now seen corresponding path program 4 times [2021-12-06 21:59:33,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:33,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058757361] [2021-12-06 21:59:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:33,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:33,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:33,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058757361] [2021-12-06 21:59:33,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058757361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:33,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:33,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:59:33,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737995697] [2021-12-06 21:59:33,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:33,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:59:33,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:33,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:59:33,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:59:33,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-06 21:59:33,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 302 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:33,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:59:33,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-06 21:59:33,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:59:34,094 INFO L129 PetriNetUnfolder]: 12/139 cut-off events. [2021-12-06 21:59:34,094 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2021-12-06 21:59:34,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 139 events. 12/139 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 343 event pairs, 2 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 305. Up to 26 conditions per place. [2021-12-06 21:59:34,095 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 22 selfloop transitions, 6 changer transitions 19/97 dead transitions. [2021-12-06 21:59:34,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 97 transitions, 433 flow [2021-12-06 21:59:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 21:59:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 21:59:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 865 transitions. [2021-12-06 21:59:34,099 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7078559738134206 [2021-12-06 21:59:34,099 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 865 transitions. [2021-12-06 21:59:34,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 865 transitions. [2021-12-06 21:59:34,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:59:34,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 865 transitions. [2021-12-06 21:59:34,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.53846153846153) internal successors, (865), 13 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:34,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:34,107 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:34,107 INFO L186 Difference]: Start difference. First operand has 113 places, 85 transitions, 302 flow. Second operand 13 states and 865 transitions. [2021-12-06 21:59:34,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 97 transitions, 433 flow [2021-12-06 21:59:34,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 368 flow, removed 14 selfloop flow, removed 16 redundant places. [2021-12-06 21:59:34,112 INFO L242 Difference]: Finished difference. Result has 107 places, 78 transitions, 221 flow [2021-12-06 21:59:34,112 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=78} [2021-12-06 21:59:34,113 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 19 predicate places. [2021-12-06 21:59:34,114 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 78 transitions, 221 flow [2021-12-06 21:59:34,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:34,114 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:59:34,115 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:34,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 21:59:34,115 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:59:34,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1982401284, now seen corresponding path program 5 times [2021-12-06 21:59:34,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:34,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137858338] [2021-12-06 21:59:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:34,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:34,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:34,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137858338] [2021-12-06 21:59:34,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137858338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:34,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:34,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:59:34,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485818154] [2021-12-06 21:59:34,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:34,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:59:34,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:34,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:59:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:59:34,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-06 21:59:34,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 78 transitions, 221 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:34,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:59:34,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-06 21:59:34,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:59:34,593 INFO L129 PetriNetUnfolder]: 4/89 cut-off events. [2021-12-06 21:59:34,593 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-12-06 21:59:34,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 89 events. 4/89 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 160. Up to 7 conditions per place. [2021-12-06 21:59:34,593 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2021-12-06 21:59:34,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 78 transitions, 282 flow [2021-12-06 21:59:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:59:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 21:59:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 787 transitions. [2021-12-06 21:59:34,596 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6976950354609929 [2021-12-06 21:59:34,596 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 787 transitions. [2021-12-06 21:59:34,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 787 transitions. [2021-12-06 21:59:34,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:59:34,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 787 transitions. [2021-12-06 21:59:34,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.58333333333333) internal successors, (787), 12 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:34,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:34,600 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:34,600 INFO L186 Difference]: Start difference. First operand has 107 places, 78 transitions, 221 flow. Second operand 12 states and 787 transitions. [2021-12-06 21:59:34,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 78 transitions, 282 flow [2021-12-06 21:59:34,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 247 flow, removed 2 selfloop flow, removed 14 redundant places. [2021-12-06 21:59:34,602 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2021-12-06 21:59:34,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2021-12-06 21:59:34,602 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2021-12-06 21:59:34,603 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2021-12-06 21:59:34,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:34,605 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-06 21:59:34,605 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-06 21:59:34,605 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-06 21:59:34,605 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-06 21:59:34,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:59:34,608 INFO L732 BasicCegarLoop]: Path program histogram: [5] [2021-12-06 21:59:34,610 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 21:59:34,610 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 21:59:34,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 09:59:34 BasicIcfg [2021-12-06 21:59:34,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 21:59:34,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 21:59:34,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 21:59:34,613 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 21:59:34,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:59:30" (3/4) ... [2021-12-06 21:59:34,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 21:59:34,620 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-06 21:59:34,620 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-06 21:59:34,620 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-06 21:59:34,623 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-12-06 21:59:34,623 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 21:59:34,624 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 21:59:34,624 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 21:59:34,650 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 21:59:34,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 21:59:34,651 INFO L158 Benchmark]: Toolchain (without parser) took 4391.77ms. Allocated memory was 79.7MB in the beginning and 136.3MB in the end (delta: 56.6MB). Free memory was 43.4MB in the beginning and 65.2MB in the end (delta: -21.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2021-12-06 21:59:34,651 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 59.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:59:34,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.48ms. Allocated memory was 79.7MB in the beginning and 113.2MB in the end (delta: 33.6MB). Free memory was 43.3MB in the beginning and 88.5MB in the end (delta: -45.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 21:59:34,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.26ms. Allocated memory is still 113.2MB. Free memory was 88.5MB in the beginning and 86.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:59:34,652 INFO L158 Benchmark]: Boogie Preprocessor took 16.77ms. Allocated memory is still 113.2MB. Free memory was 86.9MB in the beginning and 85.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:59:34,652 INFO L158 Benchmark]: RCFGBuilder took 303.40ms. Allocated memory is still 113.2MB. Free memory was 85.4MB in the beginning and 72.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 21:59:34,653 INFO L158 Benchmark]: TraceAbstraction took 3820.77ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 72.3MB in the beginning and 68.4MB in the end (delta: 3.9MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2021-12-06 21:59:34,653 INFO L158 Benchmark]: Witness Printer took 36.82ms. Allocated memory is still 136.3MB. Free memory was 68.4MB in the beginning and 65.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:59:34,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 59.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.48ms. Allocated memory was 79.7MB in the beginning and 113.2MB in the end (delta: 33.6MB). Free memory was 43.3MB in the beginning and 88.5MB in the end (delta: -45.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.26ms. Allocated memory is still 113.2MB. Free memory was 88.5MB in the beginning and 86.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.77ms. Allocated memory is still 113.2MB. Free memory was 86.9MB in the beginning and 85.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 303.40ms. Allocated memory is still 113.2MB. Free memory was 85.4MB in the beginning and 72.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3820.77ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 72.3MB in the beginning and 68.4MB in the end (delta: 3.9MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Witness Printer took 36.82ms. Allocated memory is still 136.3MB. Free memory was 68.4MB in the beginning and 65.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 564 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1278 IncrementalHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 57 mSDtfsCounter, 1278 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 11 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=2, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 5935 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 21:59:34,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d537899-ff9e-41cd-a846-9ecdf839039c/bin/uautomizer-DrprNOufMa/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