./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY --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 2f03a9521f9986f7627623e3bf6c079dbfbe3dc9d9c229ed8d14a2828a7d6850 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:09:21,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:09:21,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:09:21,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:09:21,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:09:21,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:09:21,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:09:21,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:09:21,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:09:21,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:09:21,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:09:21,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:09:21,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:09:21,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:09:21,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:09:21,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:09:21,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:09:21,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:09:21,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:09:21,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:09:21,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:09:21,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:09:21,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:09:21,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:09:21,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:09:21,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:09:21,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:09:21,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:09:21,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:09:21,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:09:21,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:09:21,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:09:21,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:09:21,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:09:21,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:09:21,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:09:21,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:09:21,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:09:21,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:09:21,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:09:21,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:09:21,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:09:21,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:09:21,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:09:21,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:09:21,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:09:21,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:09:21,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:09:21,776 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:09:21,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:09:21,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:09:21,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:09:21,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:09:21,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:09:21,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:09:21,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:09:21,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:09:21,780 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:09:21,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:09:21,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:09:21,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:09:21,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:09:21,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:09:21,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:09:21,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:09:21,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:09:21,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:09:21,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:09:21,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:09:21,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:09:21,785 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:09:21,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:09:21,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:09:21,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:09:21,792 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_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f03a9521f9986f7627623e3bf6c079dbfbe3dc9d9c229ed8d14a2828a7d6850 [2021-11-07 08:09:22,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:09:22,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:09:22,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:09:22,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:09:22,136 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:09:22,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c [2021-11-07 08:09:22,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/data/39df98903/9b00f21e24a74ef0a7be2c2054cf4113/FLAG8233378dd [2021-11-07 08:09:22,774 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:09:22,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c [2021-11-07 08:09:22,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/data/39df98903/9b00f21e24a74ef0a7be2c2054cf4113/FLAG8233378dd [2021-11-07 08:09:23,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/data/39df98903/9b00f21e24a74ef0a7be2c2054cf4113 [2021-11-07 08:09:23,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:09:23,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:09:23,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:09:23,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:09:23,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:09:23,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d1bf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23, skipping insertion in model container [2021-11-07 08:09:23,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:09:23,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:09:23,412 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_858d5ada-b5e6-4d83-b7e0-45e010004c6f/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-11-07 08:09:23,419 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_858d5ada-b5e6-4d83-b7e0-45e010004c6f/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-11-07 08:09:23,423 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_858d5ada-b5e6-4d83-b7e0-45e010004c6f/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-11-07 08:09:23,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:09:23,439 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:09:23,458 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_858d5ada-b5e6-4d83-b7e0-45e010004c6f/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-11-07 08:09:23,461 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_858d5ada-b5e6-4d83-b7e0-45e010004c6f/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-11-07 08:09:23,463 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_858d5ada-b5e6-4d83-b7e0-45e010004c6f/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-11-07 08:09:23,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:09:23,483 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:09:23,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23 WrapperNode [2021-11-07 08:09:23,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:09:23,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:09:23,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:09:23,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:09:23,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:09:23,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:09:23,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:09:23,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:09:23,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:09:23,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:09:23,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:09:23,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:09:23,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (1/1) ... [2021-11-07 08:09:23,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:09:23,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:09:23,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:09:23,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:09:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:09:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:09:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:09:23,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:09:23,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:09:23,973 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 08:09:23,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:09:23 BoogieIcfgContainer [2021-11-07 08:09:23,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:09:23,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:09:23,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:09:23,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:09:23,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:09:23" (1/3) ... [2021-11-07 08:09:23,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77211050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:09:23, skipping insertion in model container [2021-11-07 08:09:23,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:09:23" (2/3) ... [2021-11-07 08:09:23,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77211050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:09:23, skipping insertion in model container [2021-11-07 08:09:23,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:09:23" (3/3) ... [2021-11-07 08:09:23,987 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2021-11-07 08:09:23,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:09:23,995 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 08:09:24,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:09:24,107 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 [2021-11-07 08:09:24,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 08:09:24,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 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) [2021-11-07 08:09:24,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 08:09:24,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:24,144 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 08:09:24,145 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:09:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:24,161 INFO L85 PathProgramCache]: Analyzing trace with hash 889538503, now seen corresponding path program 1 times [2021-11-07 08:09:24,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:24,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774385307] [2021-11-07 08:09:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:24,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:24,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:24,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774385307] [2021-11-07 08:09:24,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774385307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:24,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:24,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:09:24,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892691600] [2021-11-07 08:09:24,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:09:24,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:24,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:09:24,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:09:24,576 INFO L87 Difference]: Start difference. First operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-07 08:09:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:24,648 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-11-07 08:09:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:09:24,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-11-07 08:09:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:24,659 INFO L225 Difference]: With dead ends: 25 [2021-11-07 08:09:24,659 INFO L226 Difference]: Without dead ends: 14 [2021-11-07 08:09:24,664 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 [2021-11-07 08:09:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-07 08:09:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-07 08:09:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-11-07 08:09:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-07 08:09:24,697 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2021-11-07 08:09:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:24,698 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-07 08:09:24,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-07 08:09:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-07 08:09:24,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 08:09:24,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:24,700 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:24,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:09:24,701 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:09:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash 148134121, now seen corresponding path program 1 times [2021-11-07 08:09:24,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:24,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482227755] [2021-11-07 08:09:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:24,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:24,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:24,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482227755] [2021-11-07 08:09:24,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482227755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:24,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:24,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:09:24,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856595860] [2021-11-07 08:09:24,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:09:24,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:24,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:09:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:09:24,823 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-07 08:09:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:24,870 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-11-07 08:09:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:09:24,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 [2021-11-07 08:09:24,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:24,874 INFO L225 Difference]: With dead ends: 15 [2021-11-07 08:09:24,874 INFO L226 Difference]: Without dead ends: 13 [2021-11-07 08:09:24,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:09:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-07 08:09:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-07 08:09:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) 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) [2021-11-07 08:09:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-11-07 08:09:24,885 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2021-11-07 08:09:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:24,887 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-11-07 08:09:24,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-07 08:09:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-11-07 08:09:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 08:09:24,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:24,889 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:24,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:09:24,890 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:09:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:24,894 INFO L85 PathProgramCache]: Analyzing trace with hash 623096429, now seen corresponding path program 1 times [2021-11-07 08:09:24,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:24,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569066127] [2021-11-07 08:09:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:24,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:25,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:25,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569066127] [2021-11-07 08:09:25,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569066127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:25,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:25,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:09:25,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417487537] [2021-11-07 08:09:25,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:09:25,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:25,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:09:25,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:09:25,046 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-07 08:09:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:25,185 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-11-07 08:09:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:09:25,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-11-07 08:09:25,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:25,186 INFO L225 Difference]: With dead ends: 21 [2021-11-07 08:09:25,186 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 08:09:25,187 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:09:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 08:09:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 08:09:25,188 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) [2021-11-07 08:09:25,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 08:09:25,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-11-07 08:09:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:25,189 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:09:25,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-07 08:09:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 08:09:25,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 08:09:25,192 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:09:25,192 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:09:25,193 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:09:25,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:09:25,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 08:09:25,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:09:25,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:09:25,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:09:25,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:09:25,325 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 89) no Hoare annotation was computed. [2021-11-07 08:09:25,326 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 08:09:25,330 INFO L857 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2021-11-07 08:09:25,330 INFO L853 garLoopResultBuilder]: At program point L95(lines 14 102) the Hoare annotation is: (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) [2021-11-07 08:09:25,331 INFO L857 garLoopResultBuilder]: For program point L62(lines 62 70) no Hoare annotation was computed. [2021-11-07 08:09:25,331 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-11-07 08:09:25,331 INFO L857 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2021-11-07 08:09:25,331 INFO L853 garLoopResultBuilder]: At program point L79(lines 52 87) the Hoare annotation is: (and (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0)) [2021-11-07 08:09:25,332 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 87) no Hoare annotation was computed. [2021-11-07 08:09:25,332 INFO L853 garLoopResultBuilder]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse0 (< 0 (+ ULTIMATE.start_main_~main__i~0 1))) (.cse1 (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 1)) (and .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) .cse1))) [2021-11-07 08:09:25,333 INFO L860 garLoopResultBuilder]: At program point L100(lines 13 102) the Hoare annotation is: true [2021-11-07 08:09:25,333 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 08:09:25,333 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 08:09:25,333 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 08:09:25,334 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 96) no Hoare annotation was computed. [2021-11-07 08:09:25,334 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-11-07 08:09:25,334 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2021-11-07 08:09:25,334 INFO L857 garLoopResultBuilder]: For program point L76(lines 76 85) no Hoare annotation was computed. [2021-11-07 08:09:25,335 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-11-07 08:09:25,338 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 08:09:25,340 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:09:25,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:09:25 BoogieIcfgContainer [2021-11-07 08:09:25,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:09:25,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:09:25,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:09:25,369 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:09:25,369 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:09:23" (3/4) ... [2021-11-07 08:09:25,376 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 08:09:25,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-07 08:09:25,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 08:09:25,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:09:25,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:09:25,444 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:09:25,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:09:25,447 INFO L168 Benchmark]: Toolchain (without parser) took 2289.37 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 67.3 MB in the beginning and 60.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:09:25,448 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:09:25,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.97 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 67.0 MB in the beginning and 117.4 MB in the end (delta: -50.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:09:25,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 115.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:09:25,450 INFO L168 Benchmark]: Boogie Preprocessor took 25.50 ms. Allocated memory is still 142.6 MB. Free memory was 115.9 MB in the beginning and 114.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:09:25,450 INFO L168 Benchmark]: RCFGBuilder took 421.72 ms. Allocated memory is still 142.6 MB. Free memory was 114.6 MB in the beginning and 104.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:09:25,451 INFO L168 Benchmark]: TraceAbstraction took 1388.24 ms. Allocated memory is still 142.6 MB. Free memory was 104.1 MB in the beginning and 62.8 MB in the end (delta: 41.2 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2021-11-07 08:09:25,451 INFO L168 Benchmark]: Witness Printer took 77.22 ms. Allocated memory is still 142.6 MB. Free memory was 62.8 MB in the beginning and 60.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 08:09:25,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.97 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 67.0 MB in the beginning and 117.4 MB in the end (delta: -50.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 115.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.50 ms. Allocated memory is still 142.6 MB. Free memory was 115.9 MB in the beginning and 114.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 421.72 ms. Allocated memory is still 142.6 MB. Free memory was 114.6 MB in the beginning and 104.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1388.24 ms. Allocated memory is still 142.6 MB. Free memory was 104.1 MB in the beginning and 62.8 MB in the end (delta: 41.2 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * Witness Printer took 77.22 ms. Allocated memory is still 142.6 MB. Free memory was 62.8 MB in the beginning and 60.0 MB in the end (delta: 2.8 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: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 64]: 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, 19 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 53 SDslu, 20 SDs, 0 SdLazy, 57 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 53 HoareAnnotationTreeSize, 4 FomulaSimplifications, 163 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((0 < main__i + 1 && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__i < main__nlen - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 < main__i + 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((0 < main__i + 1 && main__i < main__nlen) && __VERIFIER_assert__cond == 1) || (((0 < main__i + 1 && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__i < main__nlen) RESULT: Ultimate proved your program to be correct! [2021-11-07 08:09:25,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858d5ada-b5e6-4d83-b7e0-45e010004c6f/bin/uautomizer-AkOaLMaTGY/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