./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/sumt2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/sumt2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be --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 1b0e7d857a64a21fc5f03950cacb4a35900c867819a68273aa97f44e84e99e64 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:21:54,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:21:54,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:21:54,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:21:54,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:21:54,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:21:54,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:21:54,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:21:54,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:21:54,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:21:54,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:21:54,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:21:54,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:21:54,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:21:54,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:21:54,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:21:54,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:21:54,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:21:54,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:21:54,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:21:54,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:21:54,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:21:54,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:21:54,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:21:55,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:21:55,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:21:55,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:21:55,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:21:55,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:21:55,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:21:55,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:21:55,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:21:55,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:21:55,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:21:55,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:21:55,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:21:55,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:21:55,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:21:55,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:21:55,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:21:55,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:21:55,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:21:55,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:21:55,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:21:55,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:21:55,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:21:55,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:21:55,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:21:55,052 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:21:55,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:21:55,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:21:55,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:21:55,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:21:55,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:21:55,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:21:55,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:21:55,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:21:55,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:21:55,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:21:55,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:21:55,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:21:55,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:21:55,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:21:55,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:21:55,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:21:55,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:21:55,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:21:55,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:21:55,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:21:55,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:21:55,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:21:55,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:21:55,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:21:55,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:21:55,061 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_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0e7d857a64a21fc5f03950cacb4a35900c867819a68273aa97f44e84e99e64 [2021-10-21 19:21:55,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:21:55,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:21:55,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:21:55,458 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:21:55,460 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:21:55,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loops-crafted-1/sumt2.c [2021-10-21 19:21:55,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/data/299bd439f/5eac938a2ffd480e831afcc3eaea4f60/FLAGc879a037c [2021-10-21 19:21:56,145 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:21:56,145 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/sv-benchmarks/c/loops-crafted-1/sumt2.c [2021-10-21 19:21:56,155 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/data/299bd439f/5eac938a2ffd480e831afcc3eaea4f60/FLAGc879a037c [2021-10-21 19:21:56,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/data/299bd439f/5eac938a2ffd480e831afcc3eaea4f60 [2021-10-21 19:21:56,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:21:56,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:21:56,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:56,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:21:56,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:21:56,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a7c90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56, skipping insertion in model container [2021-10-21 19:21:56,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:21:56,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:21:56,822 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_e90eca67-163c-4e8c-aae6-f32cad17987e/sv-benchmarks/c/loops-crafted-1/sumt2.c[403,416] [2021-10-21 19:21:56,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:56,848 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:21:56,862 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_e90eca67-163c-4e8c-aae6-f32cad17987e/sv-benchmarks/c/loops-crafted-1/sumt2.c[403,416] [2021-10-21 19:21:56,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:56,885 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:21:56,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56 WrapperNode [2021-10-21 19:21:56,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:56,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:21:56,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:21:56,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:21:56,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:21:56,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:21:56,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:21:56,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:21:56,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:21:56,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:21:56,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:21:56,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:21:56,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (1/1) ... [2021-10-21 19:21:56,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:21:57,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:21:57,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:21:57,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:21:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:21:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:21:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:21:57,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:21:57,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:21:57,371 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 19:21:57,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:57 BoogieIcfgContainer [2021-10-21 19:21:57,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:21:57,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:21:57,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:21:57,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:21:57,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:21:56" (1/3) ... [2021-10-21 19:21:57,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f89591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:21:57, skipping insertion in model container [2021-10-21 19:21:57,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:56" (2/3) ... [2021-10-21 19:21:57,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f89591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:21:57, skipping insertion in model container [2021-10-21 19:21:57,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:57" (3/3) ... [2021-10-21 19:21:57,385 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt2.c [2021-10-21 19:21:57,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:21:57,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:21:57,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:21:57,501 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:21:57,502 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:21:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:21:57,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:57,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:57,529 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:57,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1807304968, now seen corresponding path program 1 times [2021-10-21 19:21:57,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:57,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895128411] [2021-10-21 19:21:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:57,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:57,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:57,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895128411] [2021-10-21 19:21:57,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895128411] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:57,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:57,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:21:57,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477359900] [2021-10-21 19:21:57,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:21:57,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:21:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:21:57,865 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-21 19:21:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:57,879 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-21 19:21:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:21:57,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2021-10-21 19:21:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:57,889 INFO L225 Difference]: With dead ends: 22 [2021-10-21 19:21:57,889 INFO L226 Difference]: Without dead ends: 10 [2021-10-21 19:21:57,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:21:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-21 19:21:57,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-21 19:21:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:57,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-21 19:21:57,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2021-10-21 19:21:57,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:57,926 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-21 19:21:57,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-21 19:21:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-21 19:21:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:21:57,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:57,928 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:57,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:21:57,929 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:57,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1806977267, now seen corresponding path program 1 times [2021-10-21 19:21:57,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:57,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699997995] [2021-10-21 19:21:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:57,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:58,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:58,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699997995] [2021-10-21 19:21:58,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699997995] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:58,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:58,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:21:58,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61379358] [2021-10-21 19:21:58,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:21:58,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:21:58,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:21:58,398 INFO L87 Difference]: Start difference. First operand 10 states and 11 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) [2021-10-21 19:21:58,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:58,459 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-21 19:21:58,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:21:58,460 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 [2021-10-21 19:21:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:58,462 INFO L225 Difference]: With dead ends: 21 [2021-10-21 19:21:58,462 INFO L226 Difference]: Without dead ends: 12 [2021-10-21 19:21:58,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:21:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-21 19:21:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-21 19:21:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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) [2021-10-21 19:21:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-21 19:21:58,470 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2021-10-21 19:21:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:58,471 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-21 19:21:58,472 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) [2021-10-21 19:21:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-21 19:21:58,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:21:58,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:58,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:58,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:21:58,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:58,478 INFO L82 PathProgramCache]: Analyzing trace with hash 78673311, now seen corresponding path program 1 times [2021-10-21 19:21:58,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:58,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222807750] [2021-10-21 19:21:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:58,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:59,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:59,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222807750] [2021-10-21 19:21:59,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222807750] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:21:59,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700266167] [2021-10-21 19:21:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:59,054 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:21:59,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:21:59,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:21:59,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:21:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:59,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:21:59,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:59,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700266167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:21:59,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:21:59,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2021-10-21 19:21:59,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755683701] [2021-10-21 19:21:59,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:21:59,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:59,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:21:59,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:21:59,324 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-21 19:21:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:59,412 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-10-21 19:21:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:21:59,413 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) Word has length 10 [2021-10-21 19:21:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:59,414 INFO L225 Difference]: With dead ends: 24 [2021-10-21 19:21:59,414 INFO L226 Difference]: Without dead ends: 15 [2021-10-21 19:21:59,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 201.0ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:21:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-21 19:21:59,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-21 19:21:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 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) [2021-10-21 19:21:59,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-21 19:21:59,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2021-10-21 19:21:59,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:59,425 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-21 19:21:59,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-21 19:21:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-21 19:21:59,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:21:59,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:59,426 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:59,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:59,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:21:59,640 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:59,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:59,641 INFO L82 PathProgramCache]: Analyzing trace with hash 300722865, now seen corresponding path program 1 times [2021-10-21 19:21:59,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:59,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110197521] [2021-10-21 19:21:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:59,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:00,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:00,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110197521] [2021-10-21 19:22:00,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110197521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:22:00,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147008303] [2021-10-21 19:22:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:00,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:22:00,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:22:00,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:22:00,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:22:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:00,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:22:00,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:00,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147008303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:22:00,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:22:00,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2021-10-21 19:22:00,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169574154] [2021-10-21 19:22:00,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:22:00,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:22:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:22:00,346 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:22:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:00,526 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-10-21 19:22:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:22:00,527 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 19:22:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:00,527 INFO L225 Difference]: With dead ends: 27 [2021-10-21 19:22:00,527 INFO L226 Difference]: Without dead ends: 18 [2021-10-21 19:22:00,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 276.6ms TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:22:00,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-21 19:22:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-21 19:22:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:22:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-21 19:22:00,532 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2021-10-21 19:22:00,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:00,533 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-21 19:22:00,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:22:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-21 19:22:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:22:00,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:00,534 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:00,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:00,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:22:00,741 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:22:00,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:00,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1072091937, now seen corresponding path program 2 times [2021-10-21 19:22:00,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:00,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615631655] [2021-10-21 19:22:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:00,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:01,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:01,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615631655] [2021-10-21 19:22:01,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615631655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:22:01,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64809963] [2021-10-21 19:22:01,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:22:01,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:22:01,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:22:01,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:22:01,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:22:01,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:22:01,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:22:01,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:22:01,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:01,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64809963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:22:01,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:22:01,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-10-21 19:22:01,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235867017] [2021-10-21 19:22:01,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 19:22:01,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:01,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 19:22:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:22:01,828 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:22:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:02,329 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-10-21 19:22:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 19:22:02,333 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 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 16 [2021-10-21 19:22:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:02,333 INFO L225 Difference]: With dead ends: 31 [2021-10-21 19:22:02,333 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:22:02,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 730.2ms TimeCoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2021-10-21 19:22:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:22:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:22:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:22:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:22:02,335 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-21 19:22:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:02,335 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:22:02,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:22:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:22:02,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:22:02,338 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:22:02,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:02,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:22:02,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:22:02,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:02,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:02,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:02,667 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:22:02,667 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 28) no Hoare annotation was computed. [2021-10-21 19:22:02,668 INFO L857 garLoopResultBuilder]: For program point L25-2(lines 25 28) no Hoare annotation was computed. [2021-10-21 19:22:02,668 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse0 (<= ~SIZE~0 20000001)) (.cse1 (< 0 (+ (div ~SIZE~0 4294967296) 1))) (.cse3 (= ULTIMATE.start_main_~j~0 0))) (or (and (<= ULTIMATE.start_main_~i~0 1) .cse0 (= ULTIMATE.start_main_~l~0 2) (<= 1 ULTIMATE.start_main_~i~0) .cse1 (= ULTIMATE.start_main_~j~0 1)) (let ((.cse2 (+ ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~i~0))) (and .cse0 (<= (+ ULTIMATE.start_main_~l~0 3 (* 4294967296 (div ULTIMATE.start_main_~n~0 4294967296))) (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~i~0)) (<= ULTIMATE.start_main_~l~0 .cse2) .cse1 (<= .cse2 ULTIMATE.start_main_~l~0))) (and .cse0 (= ULTIMATE.start_main_~l~0 0) (= ULTIMATE.start_main_~i~0 0) .cse1 .cse3) (and .cse0 (= ULTIMATE.start_main_~l~0 1) (= ULTIMATE.start_main_~i~0 1) .cse1 .cse3))) [2021-10-21 19:22:02,668 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 30) no Hoare annotation was computed. [2021-10-21 19:22:02,668 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-21 19:22:02,668 INFO L857 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-10-21 19:22:02,668 INFO L860 garLoopResultBuilder]: At program point L9-2(lines 8 13) the Hoare annotation is: true [2021-10-21 19:22:02,669 INFO L860 garLoopResultBuilder]: At program point L32(lines 16 33) the Hoare annotation is: true [2021-10-21 19:22:02,669 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:22:02,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:22:02,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:22:02,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-10-21 19:22:02,669 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-21 19:22:02,674 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:22:02,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:22:02 BoogieIcfgContainer [2021-10-21 19:22:02,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:22:02,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:22:02,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:22:02,689 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:22:02,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:57" (3/4) ... [2021-10-21 19:22:02,692 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:22:02,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 19:22:02,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:22:02,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:22:02,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:22:02,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:22:02,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:22:02,737 INFO L168 Benchmark]: Toolchain (without parser) took 6189.72 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 50.9 MB in the beginning and 46.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:02,737 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 57.8 MB in the beginning and 57.8 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:02,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.33 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 50.7 MB in the beginning and 100.4 MB in the end (delta: -49.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:02,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.83 ms. Allocated memory is still 123.7 MB. Free memory was 100.4 MB in the beginning and 99.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:02,739 INFO L168 Benchmark]: Boogie Preprocessor took 42.74 ms. Allocated memory is still 123.7 MB. Free memory was 99.1 MB in the beginning and 98.3 MB in the end (delta: 843.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:02,739 INFO L168 Benchmark]: RCFGBuilder took 401.87 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 89.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:02,740 INFO L168 Benchmark]: TraceAbstraction took 5312.23 ms. Allocated memory is still 123.7 MB. Free memory was 88.2 MB in the beginning and 49.6 MB in the end (delta: 38.6 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:02,740 INFO L168 Benchmark]: Witness Printer took 46.44 ms. Allocated memory is still 123.7 MB. Free memory was 49.6 MB in the beginning and 46.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:02,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 57.8 MB in the beginning and 57.8 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.33 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 50.7 MB in the beginning and 100.4 MB in the end (delta: -49.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.83 ms. Allocated memory is still 123.7 MB. Free memory was 100.4 MB in the beginning and 99.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.74 ms. Allocated memory is still 123.7 MB. Free memory was 99.1 MB in the beginning and 98.3 MB in the end (delta: 843.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 401.87 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 89.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5312.23 ms. Allocated memory is still 123.7 MB. Free memory was 88.2 MB in the beginning and 49.6 MB in the end (delta: 38.6 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. * Witness Printer took 46.44 ms. Allocated memory is still 123.7 MB. Free memory was 49.6 MB in the beginning and 46.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5183.4ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 15.3ms, AutomataDifference: 900.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 127.9ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 35 SDtfs, 60 SDslu, 53 SDs, 0 SdLazy, 329 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 280.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1244.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 100 HoareAnnotationTreeSize, 3 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 14.4ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 107.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 40.9ms SsaConstructionTime, 307.3ms SatisfiabilityAnalysisTime, 2681.8ms InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 1075 SizeOfPredicates, 13 NumberOfNonLiveVariables, 196 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/36 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: 23]: Loop Invariant Derived loop invariant: (((((((i <= 1 && SIZE <= 20000001) && l == 2) && 1 <= i) && 0 < SIZE / 4294967296 + 1) && j == 1) || ((((SIZE <= 20000001 && l + 3 + 4294967296 * (n / 4294967296) <= n + j + i) && l <= j + i) && 0 < SIZE / 4294967296 + 1) && j + i <= l)) || ((((SIZE <= 20000001 && l == 0) && i == 0) && 0 < SIZE / 4294967296 + 1) && j == 0)) || ((((SIZE <= 20000001 && l == 1) && i == 1) && 0 < SIZE / 4294967296 + 1) && j == 0) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:22:02,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90eca67-163c-4e8c-aae6-f32cad17987e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...