./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD --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 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:10:11,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:10:11,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:10:11,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:10:11,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:10:11,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:10:11,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:10:11,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:10:11,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:10:11,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:10:11,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:10:11,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:10:11,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:10:11,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:10:11,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:10:11,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:10:11,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:10:11,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:10:11,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:10:11,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:10:11,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:10:11,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:10:11,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:10:11,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:10:11,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:10:11,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:10:11,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:10:11,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:10:11,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:10:11,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:10:11,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:10:11,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:10:11,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:10:11,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:10:11,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:10:11,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:10:11,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:10:11,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:10:11,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:10:11,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:10:11,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:10:11,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:10:11,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:10:11,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:10:11,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:10:11,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:10:11,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:10:11,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:10:11,626 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:10:11,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:10:11,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:10:11,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:10:11,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:10:11,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:10:11,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:10:11,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:10:11,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:10:11,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:10:11,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:10:11,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:10:11,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:10:11,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:10:11,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:10:11,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:10:11,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:11,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:10:11,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:10:11,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:10:11,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:10:11,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:10:11,632 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:10:11,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:10:11,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:10:11,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:10:11,632 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_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2021-10-28 23:10:12,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:10:12,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:10:12,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:10:12,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:10:12,033 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:10:12,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-10-28 23:10:12,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/data/7ec0806da/b71272eec2454656a9ac218f78c38663/FLAGa2e49c554 [2021-10-28 23:10:12,649 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:10:12,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-10-28 23:10:12,669 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/data/7ec0806da/b71272eec2454656a9ac218f78c38663/FLAGa2e49c554 [2021-10-28 23:10:12,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/data/7ec0806da/b71272eec2454656a9ac218f78c38663 [2021-10-28 23:10:12,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:10:12,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:10:12,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:12,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:10:12,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:10:12,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:13,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130196a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13, skipping insertion in model container [2021-10-28 23:10:13,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:13,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:10:13,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:10:13,202 WARN L228 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_47bef548-5d1c-4144-8c59-d35563c2ce11/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-10-28 23:10:13,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:13,294 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:10:13,310 WARN L228 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_47bef548-5d1c-4144-8c59-d35563c2ce11/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-10-28 23:10:13,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:13,353 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:10:13,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13 WrapperNode [2021-10-28 23:10:13,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:13,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:10:13,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:10:13,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:10:13,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:10:13,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:10:13,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:10:13,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:10:13,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:10:13,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:10:13,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:10:13,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:10:13,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (1/1) ... [2021-10-28 23:10:13,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:13,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:13,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:10:13,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:10:13,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:10:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:10:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:10:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:10:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 23:10:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:10:13,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:10:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:10:14,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:10:14,052 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-28 23:10:14,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:14 BoogieIcfgContainer [2021-10-28 23:10:14,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:10:14,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:10:14,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:10:14,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:10:14,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:10:12" (1/3) ... [2021-10-28 23:10:14,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727515f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:14, skipping insertion in model container [2021-10-28 23:10:14,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:13" (2/3) ... [2021-10-28 23:10:14,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727515f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:14, skipping insertion in model container [2021-10-28 23:10:14,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:14" (3/3) ... [2021-10-28 23:10:14,064 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-10-28 23:10:14,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:10:14,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:10:14,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:10:14,175 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 [2021-10-28 23:10:14,176 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:10:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 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) [2021-10-28 23:10:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:10:14,216 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:14,217 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:14,217 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:14,236 INFO L85 PathProgramCache]: Analyzing trace with hash 297203850, now seen corresponding path program 1 times [2021-10-28 23:10:14,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:14,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456083438] [2021-10-28 23:10:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:14,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:14,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:14,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456083438] [2021-10-28 23:10:14,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456083438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:14,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:14,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:14,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069892750] [2021-10-28 23:10:14,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:14,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:14,552 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 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) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-28 23:10:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:14,613 INFO L93 Difference]: Finished difference Result 74 states and 110 transitions. [2021-10-28 23:10:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:14,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) Word has length 20 [2021-10-28 23:10:14,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:14,626 INFO L225 Difference]: With dead ends: 74 [2021-10-28 23:10:14,626 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 23:10:14,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 23:10:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-10-28 23:10:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 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) [2021-10-28 23:10:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-10-28 23:10:14,685 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 20 [2021-10-28 23:10:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:14,685 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-10-28 23:10:14,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-28 23:10:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-10-28 23:10:14,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:10:14,689 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:14,690 INFO L513 BasicCegarLoop]: 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] [2021-10-28 23:10:14,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:10:14,691 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:14,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1628968459, now seen corresponding path program 1 times [2021-10-28 23:10:14,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:14,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728437237] [2021-10-28 23:10:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:14,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:14,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:14,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728437237] [2021-10-28 23:10:14,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728437237] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:14,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642974154] [2021-10-28 23:10:14,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:14,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:14,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:14,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:14,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:10:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:14,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:10:15,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:10:15,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642974154] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:15,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:10:15,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-28 23:10:15,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413499278] [2021-10-28 23:10:15,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:15,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:15,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:15,185 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-10-28 23:10:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:15,203 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2021-10-28 23:10:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:15,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) Word has length 26 [2021-10-28 23:10:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:15,207 INFO L225 Difference]: With dead ends: 62 [2021-10-28 23:10:15,208 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 23:10:15,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 23:10:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-28 23:10:15,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 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) [2021-10-28 23:10:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-10-28 23:10:15,221 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 26 [2021-10-28 23:10:15,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:15,221 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-10-28 23:10:15,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-10-28 23:10:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2021-10-28 23:10:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:10:15,229 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:15,229 INFO L513 BasicCegarLoop]: 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] [2021-10-28 23:10:15,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:15,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:15,448 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1644930483, now seen corresponding path program 1 times [2021-10-28 23:10:15,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:15,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073162519] [2021-10-28 23:10:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:15,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:15,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:15,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073162519] [2021-10-28 23:10:15,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073162519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:15,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738831851] [2021-10-28 23:10:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:15,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:15,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:15,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:15,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:10:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:15,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:10:15,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:10:15,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738831851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:15,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:10:15,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-10-28 23:10:15,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339018904] [2021-10-28 23:10:15,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:15,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:15,895 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-10-28 23:10:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:16,034 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2021-10-28 23:10:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:10:16,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) Word has length 26 [2021-10-28 23:10:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:16,038 INFO L225 Difference]: With dead ends: 88 [2021-10-28 23:10:16,038 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 23:10:16,039 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 23:10:16,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-10-28 23:10:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 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) [2021-10-28 23:10:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2021-10-28 23:10:16,056 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 26 [2021-10-28 23:10:16,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:16,057 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-10-28 23:10:16,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-10-28 23:10:16,058 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2021-10-28 23:10:16,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:10:16,060 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:16,061 INFO L513 BasicCegarLoop]: 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] [2021-10-28 23:10:16,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:16,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:16,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash -817771149, now seen corresponding path program 1 times [2021-10-28 23:10:16,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:16,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453016142] [2021-10-28 23:10:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:16,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:16,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:16,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453016142] [2021-10-28 23:10:16,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453016142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:16,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662644170] [2021-10-28 23:10:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:16,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:16,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:16,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:16,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:10:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:16,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:10:16,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:16,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662644170] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:16,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:16,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-28 23:10:16,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100224346] [2021-10-28 23:10:16,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:16,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:16,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:16,568 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-28 23:10:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:16,590 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2021-10-28 23:10:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) Word has length 26 [2021-10-28 23:10:16,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:16,592 INFO L225 Difference]: With dead ends: 76 [2021-10-28 23:10:16,592 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 23:10:16,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 23:10:16,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-10-28 23:10:16,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 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) [2021-10-28 23:10:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-10-28 23:10:16,606 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 26 [2021-10-28 23:10:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:16,607 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-10-28 23:10:16,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-28 23:10:16,607 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2021-10-28 23:10:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:10:16,609 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:16,609 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:16,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:16,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:16,835 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:16,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:16,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1849885685, now seen corresponding path program 2 times [2021-10-28 23:10:16,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:16,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096249966] [2021-10-28 23:10:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:16,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:10:16,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:16,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096249966] [2021-10-28 23:10:16,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096249966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:16,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:16,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:10:16,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392202523] [2021-10-28 23:10:16,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:16,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:16,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:16,945 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-10-28 23:10:17,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:17,022 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2021-10-28 23:10:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:10:17,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) Word has length 28 [2021-10-28 23:10:17,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:17,025 INFO L225 Difference]: With dead ends: 68 [2021-10-28 23:10:17,034 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:10:17,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:17,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:10:17,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:10:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-28 23:10:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:10:17,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-28 23:10:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:17,036 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:10:17,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-10-28 23:10:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:10:17,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:10:17,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:10:17,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:10:17,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:10:17,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:17,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:17,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:17,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:17,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:17,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:17,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:17,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:17,088 INFO L860 garLoopResultBuilder]: At program point L85(lines 58 86) the Hoare annotation is: true [2021-10-28 23:10:17,088 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:10:17,089 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:10:17,089 INFO L857 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2021-10-28 23:10:17,090 INFO L857 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-28 23:10:17,090 INFO L857 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2021-10-28 23:10:17,090 INFO L857 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2021-10-28 23:10:17,091 INFO L860 garLoopResultBuilder]: At program point L95(lines 87 96) the Hoare annotation is: true [2021-10-28 23:10:17,091 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-28 23:10:17,091 INFO L860 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: true [2021-10-28 23:10:17,091 INFO L857 garLoopResultBuilder]: For program point L70-9(line 70) no Hoare annotation was computed. [2021-10-28 23:10:17,091 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-28 23:10:17,092 INFO L857 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-10-28 23:10:17,092 INFO L857 garLoopResultBuilder]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2021-10-28 23:10:17,093 INFO L857 garLoopResultBuilder]: For program point L63-1(lines 63 84) no Hoare annotation was computed. [2021-10-28 23:10:17,093 INFO L857 garLoopResultBuilder]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2021-10-28 23:10:17,094 INFO L853 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: (or (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-28 23:10:17,094 INFO L857 garLoopResultBuilder]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2021-10-28 23:10:17,094 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 81) no Hoare annotation was computed. [2021-10-28 23:10:17,094 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-28 23:10:17,094 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-28 23:10:17,094 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 75) no Hoare annotation was computed. [2021-10-28 23:10:17,095 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 83) no Hoare annotation was computed. [2021-10-28 23:10:17,095 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:10:17,095 INFO L857 garLoopResultBuilder]: For program point L90-2(lines 90 92) no Hoare annotation was computed. [2021-10-28 23:10:17,095 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-28 23:10:17,095 INFO L860 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2021-10-28 23:10:17,095 INFO L857 garLoopResultBuilder]: For program point L90-4(lines 90 92) no Hoare annotation was computed. [2021-10-28 23:10:17,096 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-28 23:10:17,096 INFO L857 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2021-10-28 23:10:17,096 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:10:17,096 INFO L853 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1)) [2021-10-28 23:10:17,096 INFO L857 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2021-10-28 23:10:17,096 INFO L857 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2021-10-28 23:10:17,096 INFO L853 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: (or (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-28 23:10:17,097 INFO L857 garLoopResultBuilder]: For program point L67-6(line 67) no Hoare annotation was computed. [2021-10-28 23:10:17,097 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-28 23:10:17,097 INFO L857 garLoopResultBuilder]: For program point L68-2(line 68) no Hoare annotation was computed. [2021-10-28 23:10:17,124 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-10-28 23:10:17,126 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:10:17,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:10:17 BoogieIcfgContainer [2021-10-28 23:10:17,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:10:17,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:10:17,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:10:17,178 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:10:17,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:14" (3/4) ... [2021-10-28 23:10:17,182 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:10:17,201 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 23:10:17,201 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-28 23:10:17,202 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:10:17,202 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:10:17,299 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:10:17,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:10:17,301 INFO L168 Benchmark]: Toolchain (without parser) took 4308.50 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 71.0 MB in the beginning and 115.6 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:10:17,301 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 81.1 MB in the end (delta: 21.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:10:17,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.52 ms. Allocated memory is still 107.0 MB. Free memory was 70.8 MB in the beginning and 80.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:17,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.85 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 78.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:17,307 INFO L168 Benchmark]: Boogie Preprocessor took 77.21 ms. Allocated memory is still 107.0 MB. Free memory was 78.4 MB in the beginning and 76.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:17,308 INFO L168 Benchmark]: RCFGBuilder took 559.31 ms. Allocated memory is still 107.0 MB. Free memory was 76.9 MB in the beginning and 63.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:17,308 INFO L168 Benchmark]: TraceAbstraction took 3120.63 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 63.7 MB in the beginning and 119.7 MB in the end (delta: -56.0 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:17,308 INFO L168 Benchmark]: Witness Printer took 121.53 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 115.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:17,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 81.1 MB in the end (delta: 21.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.52 ms. Allocated memory is still 107.0 MB. Free memory was 70.8 MB in the beginning and 80.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.85 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 78.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.21 ms. Allocated memory is still 107.0 MB. Free memory was 78.4 MB in the beginning and 76.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 559.31 ms. Allocated memory is still 107.0 MB. Free memory was 76.9 MB in the beginning and 63.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3120.63 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 63.7 MB in the beginning and 119.7 MB in the end (delta: -56.0 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * Witness Printer took 121.53 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 115.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 16]: 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 CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 227 SDtfs, 82 SDslu, 262 SDs, 0 SdLazy, 109 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 21 NumberOfFragments, 39 HoareAnnotationTreeSize, 8 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 245 SizeOfPredicates, 2 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 6/10 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 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: j < start + 1 || !(0 == cond) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: j < start + 1 || !(0 == cond) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: j < start + 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: j < start + 1 && !(0 == cond) - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 23:10:17,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bef548-5d1c-4144-8c59-d35563c2ce11/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...