./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum04-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum04-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G --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 aaea6fef281249794f41087d72bdcfa92bd0b0609c0833888767b94608daa7f2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:25:14,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:25:14,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:25:14,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:25:14,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:25:14,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:25:14,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:25:14,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:25:14,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:25:14,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:25:14,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:25:14,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:25:14,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:25:14,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:25:14,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:25:14,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:25:14,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:25:14,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:25:14,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:25:14,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:25:14,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:25:14,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:25:14,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:25:14,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:25:14,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:25:14,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:25:14,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:25:14,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:25:14,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:25:14,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:25:14,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:25:14,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:25:14,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:25:14,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:25:14,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:25:14,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:25:14,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:25:14,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:25:14,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:25:14,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:25:14,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:25:14,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:25:14,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:25:14,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:25:14,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:25:14,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:25:14,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:25:14,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:25:14,714 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:25:14,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:25:14,714 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:25:14,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:25:14,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:25:14,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:25:14,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:25:14,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:25:14,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:25:14,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:25:14,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:25:14,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:25:14,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:25:14,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:25:14,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:25:14,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:25:14,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:25:14,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:25:14,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:25:14,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:25:14,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:25:14,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:25:14,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:25:14,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:25:14,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:25:14,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:25:14,723 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_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaea6fef281249794f41087d72bdcfa92bd0b0609c0833888767b94608daa7f2 [2021-11-23 13:25:15,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:25:15,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:25:15,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:25:15,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:25:15,097 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:25:15,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/loops/sum04-2.i [2021-11-23 13:25:15,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/data/5bcc5a6b3/a4845d97d3554147bff68e94278819d1/FLAG1e9a9246f [2021-11-23 13:25:15,744 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:25:15,748 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/sv-benchmarks/c/loops/sum04-2.i [2021-11-23 13:25:15,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/data/5bcc5a6b3/a4845d97d3554147bff68e94278819d1/FLAG1e9a9246f [2021-11-23 13:25:16,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/data/5bcc5a6b3/a4845d97d3554147bff68e94278819d1 [2021-11-23 13:25:16,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:25:16,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:25:16,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:25:16,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:25:16,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:25:16,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6adf8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16, skipping insertion in model container [2021-11-23 13:25:16,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:25:16,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:25:16,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/sv-benchmarks/c/loops/sum04-2.i[808,821] [2021-11-23 13:25:16,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:25:16,390 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:25:16,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/sv-benchmarks/c/loops/sum04-2.i[808,821] [2021-11-23 13:25:16,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:25:16,421 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:25:16,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16 WrapperNode [2021-11-23 13:25:16,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:25:16,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:25:16,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:25:16,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:25:16,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,465 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2021-11-23 13:25:16,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:25:16,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:25:16,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:25:16,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:25:16,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:25:16,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:25:16,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:25:16,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:25:16,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (1/1) ... [2021-11-23 13:25:16,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:25:16,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:25:16,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:25:16,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:25:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:25:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:25:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:25:16,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:25:16,693 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:25:16,695 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:25:16,844 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:25:16,851 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:25:16,851 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:25:16,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:25:16 BoogieIcfgContainer [2021-11-23 13:25:16,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:25:16,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:25:16,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:25:16,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:25:16,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:25:16" (1/3) ... [2021-11-23 13:25:16,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bbdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:25:16, skipping insertion in model container [2021-11-23 13:25:16,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:16" (2/3) ... [2021-11-23 13:25:16,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bbdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:25:16, skipping insertion in model container [2021-11-23 13:25:16,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:25:16" (3/3) ... [2021-11-23 13:25:16,870 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2021-11-23 13:25:16,881 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:25:16,881 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:25:16,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:25:16,978 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:25:16,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:25:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 13:25:17,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:25:17,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 13:25:17,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:25:17,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:25:17,041 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-11-23 13:25:17,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:25:17,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378065707] [2021-11-23 13:25:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:25:17,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:25:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:25:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:17,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:25:17,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378065707] [2021-11-23 13:25:17,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378065707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:25:17,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:25:17,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:25:17,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959624322] [2021-11-23 13:25:17,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:25:17,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:25:17,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:25:17,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:25:17,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:25:17,273 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:25:17,304 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-23 13:25:17,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:25:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-11-23 13:25:17,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:25:17,318 INFO L225 Difference]: With dead ends: 22 [2021-11-23 13:25:17,318 INFO L226 Difference]: Without dead ends: 10 [2021-11-23 13:25:17,322 INFO L932 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 [2021-11-23 13:25:17,327 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:25:17,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:25:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-23 13:25:17,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-23 13:25:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-23 13:25:17,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-23 13:25:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:25:17,371 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-23 13:25:17,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-23 13:25:17,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:25:17,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:25:17,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:25:17,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:25:17,373 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:25:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:25:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-11-23 13:25:17,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:25:17,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203051464] [2021-11-23 13:25:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:25:17,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:25:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:25:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:17,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:25:17,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203051464] [2021-11-23 13:25:17,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203051464] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:25:17,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689596329] [2021-11-23 13:25:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:25:17,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:25:17,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:25:17,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:25:17,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:25:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:25:17,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:25:17,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:25:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:17,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:25:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:17,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689596329] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:25:17,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:25:17,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 13:25:17,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019332750] [2021-11-23 13:25:17,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:25:17,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:25:17,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:25:17,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:25:17,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:25:17,744 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:25:17,804 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-23 13:25:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:25:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 8 [2021-11-23 13:25:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:25:17,808 INFO L225 Difference]: With dead ends: 19 [2021-11-23 13:25:17,808 INFO L226 Difference]: Without dead ends: 15 [2021-11-23 13:25:17,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:25:17,812 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:25:17,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:25:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-23 13:25:17,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-23 13:25:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-23 13:25:17,828 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-23 13:25:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:25:17,829 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-23 13:25:17,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-23 13:25:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:25:17,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:25:17,833 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-11-23 13:25:17,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:25:18,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-23 13:25:18,047 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:25:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:25:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2021-11-23 13:25:18,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:25:18,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359754437] [2021-11-23 13:25:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:25:18,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:25:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:25:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:18,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:25:18,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359754437] [2021-11-23 13:25:18,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359754437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:25:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733057565] [2021-11-23 13:25:18,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:25:18,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:25:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:25:18,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:25:18,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:25:18,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:25:18,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:25:18,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:25:18,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:25:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:18,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:25:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:18,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733057565] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:25:18,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:25:18,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-23 13:25:18,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948167829] [2021-11-23 13:25:18,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:25:18,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:25:18,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:25:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:25:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:25:18,514 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:18,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:25:18,594 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-11-23 13:25:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:25:18,595 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 14 [2021-11-23 13:25:18,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:25:18,596 INFO L225 Difference]: With dead ends: 27 [2021-11-23 13:25:18,597 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 13:25:18,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:25:18,602 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:25:18,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:25:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 13:25:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-23 13:25:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-11-23 13:25:18,621 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2021-11-23 13:25:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:25:18,622 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-11-23 13:25:18,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:18,623 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-11-23 13:25:18,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 13:25:18,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:25:18,625 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2021-11-23 13:25:18,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:25:18,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:25:18,827 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:25:18,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:25:18,828 INFO L85 PathProgramCache]: Analyzing trace with hash -248120899, now seen corresponding path program 3 times [2021-11-23 13:25:18,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:25:18,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901829929] [2021-11-23 13:25:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:25:18,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:25:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:25:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:19,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:25:19,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901829929] [2021-11-23 13:25:19,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901829929] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:25:19,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874237904] [2021-11-23 13:25:19,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 13:25:19,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:25:19,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:25:19,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:25:19,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:25:19,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-23 13:25:19,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:25:19,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 13:25:19,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:25:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:19,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:25:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:20,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874237904] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:25:20,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:25:20,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2021-11-23 13:25:20,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256778827] [2021-11-23 13:25:20,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:25:20,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 13:25:20,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:25:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 13:25:20,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-11-23 13:25:20,230 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:25:20,412 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-11-23 13:25:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:25:20,413 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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 22 [2021-11-23 13:25:20,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:25:20,414 INFO L225 Difference]: With dead ends: 29 [2021-11-23 13:25:20,414 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 13:25:20,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-11-23 13:25:20,416 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:25:20,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 158 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:25:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 13:25:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 13:25:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-11-23 13:25:20,424 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2021-11-23 13:25:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:25:20,425 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-11-23 13:25:20,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:20,425 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-11-23 13:25:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:25:20,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:25:20,427 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1] [2021-11-23 13:25:20,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:25:20,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:25:20,651 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:25:20,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:25:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2127216959, now seen corresponding path program 4 times [2021-11-23 13:25:20,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:25:20,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721218108] [2021-11-23 13:25:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:25:20,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:25:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:25:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 66 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:20,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:25:20,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721218108] [2021-11-23 13:25:20,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721218108] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:25:20,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485214102] [2021-11-23 13:25:20,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 13:25:20,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:25:20,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:25:20,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:25:20,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:25:20,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 13:25:20,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:25:20,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:25:20,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:25:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:25:20,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:25:20,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485214102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:25:20,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:25:20,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 12 [2021-11-23 13:25:20,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026412911] [2021-11-23 13:25:20,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:25:20,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:25:20,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:25:20,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:25:20,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:25:20,963 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:21,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:25:21,011 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-11-23 13:25:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:25:21,012 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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 24 [2021-11-23 13:25:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:25:21,013 INFO L225 Difference]: With dead ends: 25 [2021-11-23 13:25:21,013 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:25:21,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:25:21,016 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:25:21,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:25:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:25:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:25:21,021 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) [2021-11-23 13:25:21,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:25:21,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-11-23 13:25:21,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:25:21,022 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:25:21,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:25:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:25:21,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:25:21,025 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 13:25:21,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:25:21,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:25:21,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 13:25:21,346 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 13:25:21,346 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-11-23 13:25:21,347 INFO L861 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2021-11-23 13:25:21,347 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 13:25:21,347 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 13:25:21,347 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 13:25:21,348 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-11-23 13:25:21,348 INFO L858 garLoopResultBuilder]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2021-11-23 13:25:21,348 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 28) no Hoare annotation was computed. [2021-11-23 13:25:21,348 INFO L854 garLoopResultBuilder]: At program point L24-3(lines 24 26) the Hoare annotation is: (or (and (<= 5 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~sn~0#1| 8) (<= 8 |ULTIMATE.start_main_~sn~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 5)) (and (<= |ULTIMATE.start_main_~i~0#1| 6) (<= 6 |ULTIMATE.start_main_~i~0#1|) (<= 10 |ULTIMATE.start_main_~sn~0#1|) (<= |ULTIMATE.start_main_~sn~0#1| 10)) (and (<= |ULTIMATE.start_main_~i~0#1| 4) (<= 6 |ULTIMATE.start_main_~sn~0#1|) (<= 4 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~sn~0#1| 6)) (and (<= |ULTIMATE.start_main_~sn~0#1| 14) (<= |ULTIMATE.start_main_~i~0#1| 8) (<= 14 |ULTIMATE.start_main_~sn~0#1|) (<= 8 |ULTIMATE.start_main_~i~0#1|)) (and (<= |ULTIMATE.start_main_~sn~0#1| 2) (<= |ULTIMATE.start_main_~i~0#1| 2) (<= 2 |ULTIMATE.start_main_~sn~0#1|) (<= 2 |ULTIMATE.start_main_~i~0#1|)) (and (<= |ULTIMATE.start_main_~sn~0#1| 16) (<= 9 |ULTIMATE.start_main_~i~0#1|) (< 15 |ULTIMATE.start_main_~sn~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start_main_~sn~0#1| 0)) (and (<= 7 |ULTIMATE.start_main_~i~0#1|) (<= 12 |ULTIMATE.start_main_~sn~0#1|) (<= |ULTIMATE.start_main_~sn~0#1| 12) (<= |ULTIMATE.start_main_~i~0#1| 7)) (and (<= |ULTIMATE.start_main_~sn~0#1| 4) (<= |ULTIMATE.start_main_~i~0#1| 3) (<= 4 |ULTIMATE.start_main_~sn~0#1|) (<= 3 |ULTIMATE.start_main_~i~0#1|))) [2021-11-23 13:25:21,349 INFO L858 garLoopResultBuilder]: For program point L24-4(lines 24 26) no Hoare annotation was computed. [2021-11-23 13:25:21,349 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-11-23 13:25:21,353 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1] [2021-11-23 13:25:21,355 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:25:21,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:25:21 BoogieIcfgContainer [2021-11-23 13:25:21,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:25:21,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:25:21,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:25:21,379 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:25:21,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:25:16" (3/4) ... [2021-11-23 13:25:21,383 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:25:21,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-23 13:25:21,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 13:25:21,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:25:21,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 13:25:21,437 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:25:21,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:25:21,439 INFO L158 Benchmark]: Toolchain (without parser) took 5359.10ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 47.8MB in the beginning and 77.2MB in the end (delta: -29.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:25:21,440 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 88.1MB. Free memory was 63.8MB in the beginning and 63.8MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:25:21,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.75ms. Allocated memory is still 88.1MB. Free memory was 47.5MB in the beginning and 64.8MB in the end (delta: -17.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:25:21,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.62ms. Allocated memory is still 88.1MB. Free memory was 64.6MB in the beginning and 63.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:25:21,441 INFO L158 Benchmark]: Boogie Preprocessor took 27.04ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 62.4MB in the end (delta: 959.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:25:21,442 INFO L158 Benchmark]: RCFGBuilder took 359.56ms. Allocated memory is still 88.1MB. Free memory was 62.4MB in the beginning and 53.7MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:25:21,442 INFO L158 Benchmark]: TraceAbstraction took 4518.64ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 79.3MB in the end (delta: -26.0MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2021-11-23 13:25:21,444 INFO L158 Benchmark]: Witness Printer took 59.25ms. Allocated memory is still 107.0MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:25:21,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 88.1MB. Free memory was 63.8MB in the beginning and 63.8MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.75ms. Allocated memory is still 88.1MB. Free memory was 47.5MB in the beginning and 64.8MB in the end (delta: -17.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.62ms. Allocated memory is still 88.1MB. Free memory was 64.6MB in the beginning and 63.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.04ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 62.4MB in the end (delta: 959.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 359.56ms. Allocated memory is still 88.1MB. Free memory was 62.4MB in the beginning and 53.7MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4518.64ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 79.3MB in the end (delta: -26.0MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. * Witness Printer took 59.25ms. Allocated memory is still 107.0MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 5, TraceHistogramMax: 9, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 218 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 181 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 226 IncrementalHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 37 mSDtfsCounter, 226 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 12 NumberOfFragments, 110 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 142 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 669 SizeOfPredicates, 2 NumberOfNonLiveVariables, 219 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 147/405 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: 24]: Loop Invariant Derived loop invariant: ((((((((((5 <= i && sn <= 8) && 8 <= sn) && i <= 5) || (((i <= 6 && 6 <= i) && 10 <= sn) && sn <= 10)) || (((i <= 4 && 6 <= sn) && 4 <= i) && sn <= 6)) || (((sn <= 14 && i <= 8) && 14 <= sn) && 8 <= i)) || (((sn <= 2 && i <= 2) && 2 <= sn) && 2 <= i)) || ((sn <= 16 && 9 <= i) && 15 < sn)) || (i == 1 && sn == 0)) || (((7 <= i && 12 <= sn) && sn <= 12) && i <= 7)) || (((sn <= 4 && i <= 3) && 4 <= sn) && 3 <= i) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 13:25:21,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4db8ca0b-8300-4e38-8336-37811a8e58be/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE