./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0 --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 8b9c8396c2cadaebd0d1bf5efb2e2e779b8a2240a5737f65c06e64ea585aef3c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:14:27,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:14:27,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:14:27,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:14:27,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:14:27,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:14:27,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:14:27,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:14:27,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:14:27,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:14:27,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:14:27,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:14:27,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:14:27,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:14:27,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:14:27,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:14:27,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:14:27,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:14:27,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:14:27,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:14:27,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:14:27,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:14:27,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:14:27,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:14:27,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:14:27,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:14:27,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:14:27,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:14:27,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:14:27,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:14:27,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:14:27,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:14:27,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:14:27,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:14:27,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:14:27,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:14:27,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:14:27,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:14:27,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:14:27,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:14:27,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:14:27,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:14:27,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:14:27,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:14:27,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:14:27,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:14:27,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:14:27,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:14:27,967 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:14:27,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:14:27,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:14:27,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:14:27,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:14:27,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:14:27,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:14:27,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:14:27,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:14:27,975 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:14:27,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:14:27,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:14:27,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:14:27,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:14:27,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:14:27,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:14:27,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:14:27,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:14:27,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:14:27,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:14:27,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:14:27,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:14:27,979 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:14:27,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:14:27,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:14:27,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:14:27,980 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_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b9c8396c2cadaebd0d1bf5efb2e2e779b8a2240a5737f65c06e64ea585aef3c [2021-11-22 15:14:28,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:14:28,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:14:28,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:14:28,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:14:28,337 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:14:28,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/loop-acceleration/simple_3-2.c [2021-11-22 15:14:28,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/data/412483bb7/df9769d24506472da7689d4f9479e96f/FLAGd53bc3c03 [2021-11-22 15:14:29,095 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:14:29,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/sv-benchmarks/c/loop-acceleration/simple_3-2.c [2021-11-22 15:14:29,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/data/412483bb7/df9769d24506472da7689d4f9479e96f/FLAGd53bc3c03 [2021-11-22 15:14:29,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/data/412483bb7/df9769d24506472da7689d4f9479e96f [2021-11-22 15:14:29,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:14:29,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:14:29,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:14:29,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:14:29,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:14:29,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79128c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29, skipping insertion in model container [2021-11-22 15:14:29,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:14:29,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:14:29,718 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_32b0652e-5030-4825-b03e-9330df108547/sv-benchmarks/c/loop-acceleration/simple_3-2.c[376,389] [2021-11-22 15:14:29,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:14:29,759 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:14:29,774 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_32b0652e-5030-4825-b03e-9330df108547/sv-benchmarks/c/loop-acceleration/simple_3-2.c[376,389] [2021-11-22 15:14:29,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:14:29,793 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:14:29,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29 WrapperNode [2021-11-22 15:14:29,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:14:29,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:14:29,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:14:29,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:14:29,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,840 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2021-11-22 15:14:29,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:14:29,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:14:29,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:14:29,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:14:29,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:14:29,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:14:29,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:14:29,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:14:29,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (1/1) ... [2021-11-22 15:14:29,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:14:29,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:14:29,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:14:29,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:14:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:14:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:14:29,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:14:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:14:30,076 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:14:30,078 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:14:30,243 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:14:30,250 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:14:30,250 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:14:30,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:14:30 BoogieIcfgContainer [2021-11-22 15:14:30,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:14:30,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:14:30,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:14:30,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:14:30,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:14:29" (1/3) ... [2021-11-22 15:14:30,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad54d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:14:30, skipping insertion in model container [2021-11-22 15:14:30,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:29" (2/3) ... [2021-11-22 15:14:30,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad54d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:14:30, skipping insertion in model container [2021-11-22 15:14:30,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:14:30" (3/3) ... [2021-11-22 15:14:30,268 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2021-11-22 15:14:30,275 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:14:30,275 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:14:30,357 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:14:30,370 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 [2021-11-22 15:14:30,370 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:14:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-11-22 15:14:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 15:14:30,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:30,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 15:14:30,422 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:14:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-22 15:14:30,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:30,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651968612] [2021-11-22 15:14:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:30,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:30,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:30,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651968612] [2021-11-22 15:14:30,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651968612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:30,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:30,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:14:30,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144242918] [2021-11-22 15:14:30,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:30,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:30,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:30,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:30,861 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-11-22 15:14:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:30,916 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-11-22 15:14:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:14:30,919 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 [2021-11-22 15:14:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:30,942 INFO L225 Difference]: With dead ends: 26 [2021-11-22 15:14:30,943 INFO L226 Difference]: Without dead ends: 8 [2021-11-22 15:14:30,946 INFO L932 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 [2021-11-22 15:14:30,951 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:30,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-22 15:14:31,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-22 15:14:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2021-11-22 15:14:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-22 15:14:31,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-11-22 15:14:31,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:31,014 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-22 15:14:31,014 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) [2021-11-22 15:14:31,015 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-22 15:14:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:14:31,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:31,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:31,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:14:31,017 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:14:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-11-22 15:14:31,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:31,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065150344] [2021-11-22 15:14:31,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:31,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:31,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:31,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065150344] [2021-11-22 15:14:31,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065150344] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:14:31,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541207013] [2021-11-22 15:14:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:31,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:31,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:14:31,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:14:31,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:14:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:31,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:14:31,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:14:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:31,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:14:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:14:31,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541207013] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 15:14:31,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:14:31,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2021-11-22 15:14:31,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948143030] [2021-11-22 15:14:31,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:31,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:31,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:31,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:31,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:14:31,494 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-22 15:14:31,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:31,513 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-11-22 15:14:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:14:31,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-22 15:14:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:31,514 INFO L225 Difference]: With dead ends: 8 [2021-11-22 15:14:31,514 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 15:14:31,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:14:31,517 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5 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 [2021-11-22 15:14:31,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 5 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 15:14:31,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 15:14:31,520 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) [2021-11-22 15:14:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 15:14:31,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-22 15:14:31,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:31,521 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:14:31,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-22 15:14:31,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 15:14:31,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 15:14:31,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 15:14:31,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:14:31,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:31,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-22 15:14:31,758 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-22 15:14:31,758 INFO L854 garLoopResultBuilder]: At program point L17-2(lines 17 19) the Hoare annotation is: (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) [2021-11-22 15:14:31,759 INFO L858 garLoopResultBuilder]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2021-11-22 15:14:31,759 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 22) no Hoare annotation was computed. [2021-11-22 15:14:31,759 INFO L858 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-11-22 15:14:31,760 INFO L854 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) [2021-11-22 15:14:31,760 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-22 15:14:31,760 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-22 15:14:31,760 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-22 15:14:31,761 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-11-22 15:14:31,761 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-11-22 15:14:31,765 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-22 15:14:31,767 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:14:31,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:14:31 BoogieIcfgContainer [2021-11-22 15:14:31,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:14:31,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:14:31,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:14:31,787 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:14:31,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:14:30" (3/4) ... [2021-11-22 15:14:31,792 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 15:14:31,804 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-22 15:14:31,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 15:14:31,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 15:14:31,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 15:14:31,856 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:14:31,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:14:31,858 INFO L158 Benchmark]: Toolchain (without parser) took 2396.10ms. Allocated memory is still 111.1MB. Free memory was 75.5MB in the beginning and 74.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2021-11-22 15:14:31,858 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:14:31,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.04ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 88.1MB in the end (delta: -12.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:14:31,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.60ms. Allocated memory is still 111.1MB. Free memory was 88.1MB in the beginning and 86.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:14:31,860 INFO L158 Benchmark]: Boogie Preprocessor took 38.34ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.8MB in the end (delta: 686.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:14:31,860 INFO L158 Benchmark]: RCFGBuilder took 371.16ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 77.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:14:31,870 INFO L158 Benchmark]: TraceAbstraction took 1528.23ms. Allocated memory is still 111.1MB. Free memory was 76.6MB in the beginning and 76.7MB in the end (delta: -124.6kB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2021-11-22 15:14:31,871 INFO L158 Benchmark]: Witness Printer took 70.24ms. Allocated memory is still 111.1MB. Free memory was 76.1MB in the beginning and 74.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:14:31,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.04ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 88.1MB in the end (delta: -12.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.60ms. Allocated memory is still 111.1MB. Free memory was 88.1MB in the beginning and 86.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.34ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.8MB in the end (delta: 686.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.16ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 77.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1528.23ms. Allocated memory is still 111.1MB. Free memory was 76.6MB in the beginning and 76.7MB in the end (delta: -124.6kB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. * Witness Printer took 70.24ms. Allocated memory is still 111.1MB. Free memory was 76.1MB in the beginning and 74.0MB 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: 8]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 2 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 2 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 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: 17]: Loop Invariant Derived loop invariant: x % 2 == 0 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: !(cond == 0) RESULT: Ultimate proved your program to be correct! [2021-11-22 15:14:31,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32b0652e-5030-4825-b03e-9330df108547/bin/uautomizer-w2VwFs6gM0/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