./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_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/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_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg --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 08:41:42,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:41:42,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:41:42,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:41:42,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:41:42,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:41:42,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:41:42,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:41:42,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:41:42,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:41:42,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:41:42,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:41:42,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:41:42,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:41:42,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:41:42,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:41:42,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:41:42,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:41:42,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:41:42,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:41:42,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:41:42,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:41:42,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:41:42,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:41:42,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:41:42,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:41:42,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:41:42,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:41:42,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:41:42,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:41:42,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:41:42,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:41:42,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:41:42,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:41:42,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:41:42,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:41:42,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:41:42,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:41:42,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:41:42,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:41:42,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:41:42,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:41:42,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:41:42,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:41:42,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:41:42,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:41:42,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:41:42,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:41:42,603 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:41:42,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:41:42,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:41:42,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:41:42,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:41:42,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:41:42,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:41:42,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:41:42,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:41:42,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:41:42,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:41:42,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:41:42,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:41:42,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:41:42,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:41:42,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:41:42,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:41:42,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:41:42,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:41:42,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:41:42,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:41:42,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:41:42,610 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:41:42,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:41:42,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:41:42,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:41:42,613 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_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2021-10-28 08:41:42,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:41:42,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:41:42,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:41:42,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:41:42,993 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:41:42,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-10-28 08:41:43,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/data/5e37cd77e/5f20754976114c6e87aa836b4de11818/FLAG58e317624 [2021-10-28 08:41:43,651 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:41:43,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-10-28 08:41:43,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/data/5e37cd77e/5f20754976114c6e87aa836b4de11818/FLAG58e317624 [2021-10-28 08:41:43,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/data/5e37cd77e/5f20754976114c6e87aa836b4de11818 [2021-10-28 08:41:43,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:41:43,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:41:43,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:41:43,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:41:43,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:41:43,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:41:43" (1/1) ... [2021-10-28 08:41:43,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4061e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:43, skipping insertion in model container [2021-10-28 08:41:43,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:41:43" (1/1) ... [2021-10-28 08:41:44,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:41:44,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:41:44,225 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_9a9b52bb-a802-4adf-9a63-16dc83f88607/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-10-28 08:41:44,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:41:44,269 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:41:44,282 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_9a9b52bb-a802-4adf-9a63-16dc83f88607/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-10-28 08:41:44,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:41:44,319 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:41:44,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44 WrapperNode [2021-10-28 08:41:44,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:41:44,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:41:44,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:41:44,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:41:44,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:41:44,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:41:44,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:41:44,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:41:44,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:41:44,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:41:44,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:41:44,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:41:44,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (1/1) ... [2021-10-28 08:41:44,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:41:44,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:41:44,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:41:44,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:41:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:41:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:41:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:41:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:41:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 08:41:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:41:44,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:41:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:41:44,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:41:44,927 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-28 08:41:44,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:41:44 BoogieIcfgContainer [2021-10-28 08:41:44,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:41:44,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:41:44,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:41:44,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:41:44,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:41:43" (1/3) ... [2021-10-28 08:41:44,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d137d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:41:44, skipping insertion in model container [2021-10-28 08:41:44,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:44" (2/3) ... [2021-10-28 08:41:44,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d137d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:41:44, skipping insertion in model container [2021-10-28 08:41:44,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:41:44" (3/3) ... [2021-10-28 08:41:44,945 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-10-28 08:41:44,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:41:44,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:41:44,997 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:41:45,004 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 08:41:45,004 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:41:45,018 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 08:41:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:41:45,024 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:41:45,024 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 08:41:45,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:41:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:41:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash 297203850, now seen corresponding path program 1 times [2021-10-28 08:41:45,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:41:45,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219497854] [2021-10-28 08:41:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:41:45,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:41:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:41:45,250 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 08:41:45,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:41:45,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219497854] [2021-10-28 08:41:45,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219497854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:41:45,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:41:45,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:41:45,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692747744] [2021-10-28 08:41:45,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:41:45,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:41:45,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:41:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:41:45,282 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 08:41:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:41:45,327 INFO L93 Difference]: Finished difference Result 74 states and 110 transitions. [2021-10-28 08:41:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:41:45,331 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 08:41:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:41:45,339 INFO L225 Difference]: With dead ends: 74 [2021-10-28 08:41:45,339 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 08:41:45,344 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 08:41:45,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 08:41:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-10-28 08:41:45,381 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 08:41:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-10-28 08:41:45,384 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 20 [2021-10-28 08:41:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:41:45,385 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-10-28 08:41:45,385 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 08:41:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-10-28 08:41:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 08:41:45,388 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:41:45,388 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 08:41:45,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:41:45,389 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:41:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:41:45,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1628968459, now seen corresponding path program 1 times [2021-10-28 08:41:45,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:41:45,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255514828] [2021-10-28 08:41:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:41:45,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:41:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:41:45,515 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 08:41:45,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:41:45,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255514828] [2021-10-28 08:41:45,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255514828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:41:45,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046949528] [2021-10-28 08:41:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:41:45,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:41:45,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:41:45,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:41:45,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:41:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:41:45,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:41:45,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:41:45,770 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 08:41:45,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046949528] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:41:45,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:41:45,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-28 08:41:45,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480173246] [2021-10-28 08:41:45,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:41:45,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:41:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:41:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:41:45,774 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 08:41:45,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:41:45,787 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2021-10-28 08:41:45,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:41:45,788 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 08:41:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:41:45,789 INFO L225 Difference]: With dead ends: 62 [2021-10-28 08:41:45,789 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 08:41:45,790 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 08:41:45,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 08:41:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-28 08:41:45,794 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 08:41:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-10-28 08:41:45,796 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 26 [2021-10-28 08:41:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:41:45,796 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-10-28 08:41:45,796 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 08:41:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2021-10-28 08:41:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 08:41:45,798 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:41:45,798 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 08:41:45,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:41:46,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-28 08:41:46,023 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:41:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:41:46,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1644930483, now seen corresponding path program 1 times [2021-10-28 08:41:46,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:41:46,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384465500] [2021-10-28 08:41:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:41:46,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:41:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:41:46,104 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 08:41:46,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:41:46,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384465500] [2021-10-28 08:41:46,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384465500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:41:46,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523710559] [2021-10-28 08:41:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:41:46,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:41:46,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:41:46,111 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:41:46,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:41:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:41:46,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:41:46,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:41:46,421 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 08:41:46,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523710559] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:41:46,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:41:46,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-10-28 08:41:46,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482233741] [2021-10-28 08:41:46,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:41:46,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:41:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:41:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:41:46,432 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 08:41:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:41:46,551 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2021-10-28 08:41:46,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:41:46,552 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 08:41:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:41:46,556 INFO L225 Difference]: With dead ends: 88 [2021-10-28 08:41:46,558 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 08:41:46,558 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 08:41:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 08:41:46,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-10-28 08:41:46,564 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 08:41:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2021-10-28 08:41:46,565 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 26 [2021-10-28 08:41:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:41:46,565 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-10-28 08:41:46,566 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 08:41:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2021-10-28 08:41:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 08:41:46,567 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:41:46,567 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 08:41:46,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:41:46,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:41:46,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:41:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:41:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash -817771149, now seen corresponding path program 1 times [2021-10-28 08:41:46,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:41:46,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161289044] [2021-10-28 08:41:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:41:46,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:41:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:41:46,830 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 08:41:46,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:41:46,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161289044] [2021-10-28 08:41:46,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161289044] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:41:46,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975062457] [2021-10-28 08:41:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:41:46,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:41:46,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:41:46,836 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:41:46,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 08:41:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:41:46,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 08:41:46,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:41:47,023 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 08:41:47,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975062457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:41:47,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:41:47,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-28 08:41:47,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356683600] [2021-10-28 08:41:47,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:41:47,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:41:47,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:41:47,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:41:47,026 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 08:41:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:41:47,047 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2021-10-28 08:41:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:41:47,048 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 08:41:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:41:47,049 INFO L225 Difference]: With dead ends: 76 [2021-10-28 08:41:47,049 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 08:41:47,050 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 08:41:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 08:41:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-10-28 08:41:47,059 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 08:41:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-10-28 08:41:47,065 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 26 [2021-10-28 08:41:47,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:41:47,065 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-10-28 08:41:47,066 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 08:41:47,066 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2021-10-28 08:41:47,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 08:41:47,068 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:41:47,068 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 08:41:47,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:41:47,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:41:47,293 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:41:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:41:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1849885685, now seen corresponding path program 2 times [2021-10-28 08:41:47,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:41:47,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255587894] [2021-10-28 08:41:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:41:47,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:41:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:41:47,391 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 08:41:47,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:41:47,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255587894] [2021-10-28 08:41:47,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255587894] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:41:47,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:41:47,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:41:47,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541541654] [2021-10-28 08:41:47,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:41:47,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:41:47,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:41:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:41:47,398 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 08:41:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:41:47,462 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2021-10-28 08:41:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:41:47,463 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 08:41:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:41:47,464 INFO L225 Difference]: With dead ends: 68 [2021-10-28 08:41:47,470 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:41:47,474 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 08:41:47,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:41:47,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:41:47,476 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 08:41:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:41:47,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-28 08:41:47,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:41:47,477 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:41:47,477 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 08:41:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:41:47,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:41:47,480 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:41:47,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:41:47,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 08:41:47,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:41:47,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:41:47,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:41:47,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:41:47,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:41:47,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:41:47,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:41:47,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:41:47,513 INFO L860 garLoopResultBuilder]: At program point L85(lines 58 86) the Hoare annotation is: true [2021-10-28 08:41:47,513 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 08:41:47,514 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 08:41:47,514 INFO L857 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2021-10-28 08:41:47,514 INFO L857 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-28 08:41:47,514 INFO L857 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2021-10-28 08:41:47,514 INFO L857 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2021-10-28 08:41:47,515 INFO L860 garLoopResultBuilder]: At program point L95(lines 87 96) the Hoare annotation is: true [2021-10-28 08:41:47,515 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-28 08:41:47,515 INFO L860 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: true [2021-10-28 08:41:47,515 INFO L857 garLoopResultBuilder]: For program point L70-9(line 70) no Hoare annotation was computed. [2021-10-28 08:41:47,515 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-28 08:41:47,516 INFO L857 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-10-28 08:41:47,516 INFO L857 garLoopResultBuilder]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2021-10-28 08:41:47,516 INFO L857 garLoopResultBuilder]: For program point L63-1(lines 63 84) no Hoare annotation was computed. [2021-10-28 08:41:47,516 INFO L857 garLoopResultBuilder]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2021-10-28 08:41:47,516 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 08:41:47,516 INFO L857 garLoopResultBuilder]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2021-10-28 08:41:47,517 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 81) no Hoare annotation was computed. [2021-10-28 08:41:47,517 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-28 08:41:47,517 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 08:41:47,517 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 75) no Hoare annotation was computed. [2021-10-28 08:41:47,517 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 83) no Hoare annotation was computed. [2021-10-28 08:41:47,518 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 08:41:47,518 INFO L857 garLoopResultBuilder]: For program point L90-2(lines 90 92) no Hoare annotation was computed. [2021-10-28 08:41:47,518 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-28 08:41:47,518 INFO L860 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2021-10-28 08:41:47,518 INFO L857 garLoopResultBuilder]: For program point L90-4(lines 90 92) no Hoare annotation was computed. [2021-10-28 08:41:47,519 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-28 08:41:47,519 INFO L857 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2021-10-28 08:41:47,519 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 08:41:47,519 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 08:41:47,519 INFO L857 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2021-10-28 08:41:47,519 INFO L857 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2021-10-28 08:41:47,520 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 08:41:47,520 INFO L857 garLoopResultBuilder]: For program point L67-6(line 67) no Hoare annotation was computed. [2021-10-28 08:41:47,520 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-28 08:41:47,520 INFO L857 garLoopResultBuilder]: For program point L68-2(line 68) no Hoare annotation was computed. [2021-10-28 08:41:47,523 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-10-28 08:41:47,525 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:41:47,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:41:47 BoogieIcfgContainer [2021-10-28 08:41:47,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:41:47,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:41:47,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:41:47,540 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:41:47,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:41:44" (3/4) ... [2021-10-28 08:41:47,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:41:47,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 08:41:47,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-28 08:41:47,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:41:47,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:41:47,602 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:41:47,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:41:47,603 INFO L168 Benchmark]: Toolchain (without parser) took 3619.48 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 54.1 MB in the beginning and 78.5 MB in the end (delta: -24.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:41:47,604 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:41:47,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.24 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 53.9 MB in the beginning and 88.1 MB in the end (delta: -34.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:47,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.93 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 86.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:47,605 INFO L168 Benchmark]: Boogie Preprocessor took 59.23 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 84.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:47,606 INFO L168 Benchmark]: RCFGBuilder took 476.95 ms. Allocated memory is still 113.2 MB. Free memory was 84.6 MB in the beginning and 71.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:47,606 INFO L168 Benchmark]: TraceAbstraction took 2608.67 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 82.6 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:41:47,607 INFO L168 Benchmark]: Witness Printer took 62.59 ms. Allocated memory is still 113.2 MB. Free memory was 82.6 MB in the beginning and 78.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:47,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.24 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 53.9 MB in the beginning and 88.1 MB in the end (delta: -34.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.93 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 86.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.23 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 84.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 476.95 ms. Allocated memory is still 113.2 MB. Free memory was 84.6 MB in the beginning and 71.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2608.67 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 82.6 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 62.59 ms. Allocated memory is still 113.2 MB. Free memory was 82.6 MB in the beginning and 78.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 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: 2.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, 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, 0.0s 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, 0.7s 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 08:41:47,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9b52bb-a802-4adf-9a63-16dc83f88607/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...