./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex04.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_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/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_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/trex04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/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_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/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 f70ffe9cd45c37f44e9e780e31340fab45b6a2fb7f7ef23a2d90faf4241229d6 .................................................................................................................................................................................................................................................................................................................................. 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 19:13:51,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:13:51,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:13:51,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:13:51,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:13:51,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:13:51,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:13:51,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:13:51,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:13:51,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:13:51,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:13:51,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:13:51,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:13:51,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:13:51,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:13:51,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:13:51,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:13:51,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:13:51,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:13:51,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:13:51,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:13:51,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:13:51,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:13:51,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:13:51,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:13:51,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:13:51,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:13:51,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:13:51,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:13:51,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:13:51,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:13:51,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:13:51,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:13:51,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:13:51,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:13:51,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:13:51,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:13:51,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:13:51,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:13:51,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:13:51,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:13:51,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:13:51,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:13:51,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:13:51,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:13:51,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:13:51,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:13:51,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:13:51,750 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:13:51,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:13:51,751 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:13:51,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:13:51,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:13:51,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:13:51,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:13:51,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:13:51,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:13:51,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:13:51,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:13:51,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:13:51,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:13:51,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:13:51,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:13:51,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:13:51,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:13:51,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:13:51,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:13:51,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:13:51,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:13:51,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:13:51,757 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:13:51,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:13:51,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:13:51,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:13:51,758 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_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70ffe9cd45c37f44e9e780e31340fab45b6a2fb7f7ef23a2d90faf4241229d6 [2021-10-21 19:13:52,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:13:52,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:13:52,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:13:52,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:13:52,056 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:13:52,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loops/trex04.c [2021-10-21 19:13:52,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/data/e693bcfe8/018b010ef18d446e8eec89a8b8c3a036/FLAG020a959e3 [2021-10-21 19:13:52,638 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:13:52,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/sv-benchmarks/c/loops/trex04.c [2021-10-21 19:13:52,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/data/e693bcfe8/018b010ef18d446e8eec89a8b8c3a036/FLAG020a959e3 [2021-10-21 19:13:53,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/data/e693bcfe8/018b010ef18d446e8eec89a8b8c3a036 [2021-10-21 19:13:53,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:13:53,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:13:53,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:13:53,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:13:53,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:13:53,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7194116f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53, skipping insertion in model container [2021-10-21 19:13:53,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:13:53,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:13:53,246 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_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/sv-benchmarks/c/loops/trex04.c[405,418] [2021-10-21 19:13:53,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:13:53,265 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:13:53,278 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_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/sv-benchmarks/c/loops/trex04.c[405,418] [2021-10-21 19:13:53,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:13:53,297 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:13:53,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53 WrapperNode [2021-10-21 19:13:53,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:13:53,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:13:53,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:13:53,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:13:53,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:13:53,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:13:53,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:13:53,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:13:53,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:13:53,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:13:53,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:13:53,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:13:53,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (1/1) ... [2021-10-21 19:13:53,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:13:53,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:53,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:53,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:13:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:13:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:13:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:13:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:13:53,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:13:53,732 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-21 19:13:53,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:13:53 BoogieIcfgContainer [2021-10-21 19:13:53,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:13:53,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:13:53,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:13:53,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:13:53,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:13:53" (1/3) ... [2021-10-21 19:13:53,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a69b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:13:53, skipping insertion in model container [2021-10-21 19:13:53,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:53" (2/3) ... [2021-10-21 19:13:53,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a69b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:13:53, skipping insertion in model container [2021-10-21 19:13:53,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:13:53" (3/3) ... [2021-10-21 19:13:53,758 INFO L111 eAbstractionObserver]: Analyzing ICFG trex04.c [2021-10-21 19:13:53,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:13:53,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:13:53,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:13:53,844 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 19:13:53,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:13:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 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 19:13:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:13:53,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:13:53,887 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:53,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:13:53,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:53,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1328750352, now seen corresponding path program 1 times [2021-10-21 19:13:53,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:53,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032496658] [2021-10-21 19:13:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:53,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:54,147 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 19:13:54,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:54,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032496658] [2021-10-21 19:13:54,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032496658] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:54,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:54,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:13:54,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960102238] [2021-10-21 19:13:54,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:13:54,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:13:54,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:13:54,184 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 19:13:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:54,197 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-10-21 19:13:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:13:54,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-10-21 19:13:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:13:54,210 INFO L225 Difference]: With dead ends: 27 [2021-10-21 19:13:54,210 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 19:13:54,214 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 19:13:54,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 19:13:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-21 19:13:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2021-10-21 19:13:54,244 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 12 [2021-10-21 19:13:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:13:54,246 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 25 transitions. [2021-10-21 19:13:54,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 19:13:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2021-10-21 19:13:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:13:54,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:13:54,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:54,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:13:54,248 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:13:54,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:54,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1328869516, now seen corresponding path program 1 times [2021-10-21 19:13:54,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:54,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519753189] [2021-10-21 19:13:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:54,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:54,382 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 19:13:54,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:54,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519753189] [2021-10-21 19:13:54,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519753189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:54,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:54,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:13:54,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449866473] [2021-10-21 19:13:54,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:13:54,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:13:54,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:13:54,386 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 19:13:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:54,432 INFO L93 Difference]: Finished difference Result 17 states and 25 transitions. [2021-10-21 19:13:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:13:54,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-10-21 19:13:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:13:54,433 INFO L225 Difference]: With dead ends: 17 [2021-10-21 19:13:54,433 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:13:54,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:13:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:13:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:13:54,435 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 19:13:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:13:54,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-21 19:13:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:13:54,436 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:13:54,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 19:13:54,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:13:54,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:13:54,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:13:54,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:13:54,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:13:54,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:13:54,454 INFO L857 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-10-21 19:13:54,455 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-10-21 19:13:54,455 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:13:54,455 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:13:54,455 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:13:54,455 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-10-21 19:13:54,456 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:13:54,456 INFO L857 garLoopResultBuilder]: For program point L42-1(lines 28 48) no Hoare annotation was computed. [2021-10-21 19:13:54,457 INFO L857 garLoopResultBuilder]: For program point L42-2(lines 42 45) no Hoare annotation was computed. [2021-10-21 19:13:54,458 INFO L857 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2021-10-21 19:13:54,460 INFO L857 garLoopResultBuilder]: For program point L34-2(lines 28 48) no Hoare annotation was computed. [2021-10-21 19:13:54,460 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-21 19:13:54,461 INFO L857 garLoopResultBuilder]: For program point L22-2(lines 19 25) no Hoare annotation was computed. [2021-10-21 19:13:54,461 INFO L857 garLoopResultBuilder]: For program point L22-3(line 22) no Hoare annotation was computed. [2021-10-21 19:13:54,461 INFO L857 garLoopResultBuilder]: For program point L22-5(lines 19 25) no Hoare annotation was computed. [2021-10-21 19:13:54,462 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-10-21 19:13:54,463 INFO L860 garLoopResultBuilder]: At program point L10-2(lines 1 49) the Hoare annotation is: true [2021-10-21 19:13:54,463 INFO L857 garLoopResultBuilder]: For program point L39(line 39) no Hoare annotation was computed. [2021-10-21 19:13:54,463 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 28 48) no Hoare annotation was computed. [2021-10-21 19:13:54,467 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-21 19:13:54,471 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:13:54,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:13:54 BoogieIcfgContainer [2021-10-21 19:13:54,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:13:54,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:13:54,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:13:54,483 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:13:54,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:13:53" (3/4) ... [2021-10-21 19:13:54,486 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:13:54,498 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 19:13:54,498 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:13:54,498 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:13:54,499 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:13:54,544 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:13:54,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:13:54,546 INFO L168 Benchmark]: Toolchain (without parser) took 1498.89 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 51.2 MB in the beginning and 72.6 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:54,546 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:54,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.01 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 51.0 MB in the beginning and 79.5 MB in the end (delta: -28.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:54,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.27 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 77.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:54,548 INFO L168 Benchmark]: Boogie Preprocessor took 22.03 ms. Allocated memory is still 102.8 MB. Free memory was 77.8 MB in the beginning and 76.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:54,548 INFO L168 Benchmark]: RCFGBuilder took 377.99 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 66.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:54,549 INFO L168 Benchmark]: TraceAbstraction took 745.60 ms. Allocated memory is still 102.8 MB. Free memory was 65.7 MB in the beginning and 75.9 MB in the end (delta: -10.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:54,549 INFO L168 Benchmark]: Witness Printer took 61.93 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 72.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:54,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.01 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 51.0 MB in the beginning and 79.5 MB in the end (delta: -28.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.27 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 77.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.03 ms. Allocated memory is still 102.8 MB. Free memory was 77.8 MB in the beginning and 76.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 377.99 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 66.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 745.60 ms. Allocated memory is still 102.8 MB. Free memory was 65.7 MB in the beginning and 75.9 MB in the end (delta: -10.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 61.93 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 72.6 MB in the end (delta: 3.2 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: 11]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 635.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 32.6ms, AutomataDifference: 96.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 12.8ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 1 SDslu, 40 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 5.4ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 19.2ms SsaConstructionTime, 70.7ms SatisfiabilityAnalysisTime, 177.1ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:13:54,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c9bcc-1e2f-4354-a70f-d2636dc7b5b9/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...