./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/string-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/string-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b312eb4f8caa7cb61d3a06c0594e4f86d10948be ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 18:03:20,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:03:20,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:03:20,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:03:20,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:03:20,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:03:20,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:03:20,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:03:20,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:03:20,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:03:20,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:03:20,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:03:20,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:03:20,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:03:20,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:03:20,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:03:20,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:03:20,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:03:20,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:03:20,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:03:20,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:03:20,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:03:20,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:03:20,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:03:20,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:03:20,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:03:20,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:03:20,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:03:20,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:03:20,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:03:20,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:03:20,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:03:20,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:03:20,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:03:20,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:03:20,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:03:20,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:03:20,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:03:20,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:03:20,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:03:20,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:03:20,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 18:03:20,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:03:20,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:03:20,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:03:20,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:03:20,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:03:20,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:03:20,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:03:20,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:03:20,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:03:20,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:03:20,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:03:20,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:03:20,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:03:20,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:03:20,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:03:20,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:03:20,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:03:20,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:03:20,477 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:03:20,477 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:03:20,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:03:20,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:03:20,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:03:20,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:03:20,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:03:20,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:03:20,480 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:03:20,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:03:20,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:03:20,481 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-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b312eb4f8caa7cb61d3a06c0594e4f86d10948be [2020-12-01 18:03:20,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:03:20,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:03:20,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:03:20,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:03:20,863 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:03:20,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/../../sv-benchmarks/c/loops/string-1.i [2020-12-01 18:03:20,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/data/ffcbdfff7/ec8254aa7fa641ec9b2ae03ee88dff88/FLAG39e478ec0 [2020-12-01 18:03:21,553 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:03:21,554 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/sv-benchmarks/c/loops/string-1.i [2020-12-01 18:03:21,565 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/data/ffcbdfff7/ec8254aa7fa641ec9b2ae03ee88dff88/FLAG39e478ec0 [2020-12-01 18:03:21,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/data/ffcbdfff7/ec8254aa7fa641ec9b2ae03ee88dff88 [2020-12-01 18:03:21,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:03:21,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:03:21,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:03:21,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:03:21,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:03:21,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:03:21" (1/1) ... [2020-12-01 18:03:21,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ae3790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:21, skipping insertion in model container [2020-12-01 18:03:21,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:03:21" (1/1) ... [2020-12-01 18:03:21,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:03:21,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:03:22,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:03:22,266 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:03:22,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:03:22,310 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:03:22,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22 WrapperNode [2020-12-01 18:03:22,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:03:22,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:03:22,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:03:22,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:03:22,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... [2020-12-01 18:03:22,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... [2020-12-01 18:03:22,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:03:22,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:03:22,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:03:22,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:03:22,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... [2020-12-01 18:03:22,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... [2020-12-01 18:03:22,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... [2020-12-01 18:03:22,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... [2020-12-01 18:03:22,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... [2020-12-01 18:03:22,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... [2020-12-01 18:03:22,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... [2020-12-01 18:03:22,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:03:22,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:03:22,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:03:22,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:03:22,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:03:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:03:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 18:03:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 18:03:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 18:03:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:03:22,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:03:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 18:03:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 18:03:23,170 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:03:23,171 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-01 18:03:23,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:03:23 BoogieIcfgContainer [2020-12-01 18:03:23,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:03:23,177 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:03:23,177 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:03:23,196 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:03:23,197 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:03:23" (1/1) ... [2020-12-01 18:03:23,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:03:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 20 states and 31 transitions. [2020-12-01 18:03:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 31 transitions. [2020-12-01 18:03:23,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 18:03:23,263 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:03:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 20 states and 28 transitions. [2020-12-01 18:03:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2020-12-01 18:03:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 18:03:23,519 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:03:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 21 states and 30 transitions. [2020-12-01 18:03:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2020-12-01 18:03:23,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 18:03:23,707 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 18:03:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 22 states and 32 transitions. [2020-12-01 18:03:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2020-12-01 18:03:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 18:03:23,785 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 18:03:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 23 states and 34 transitions. [2020-12-01 18:03:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2020-12-01 18:03:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 18:03:23,943 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 18:03:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 24 states and 35 transitions. [2020-12-01 18:03:24,142 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2020-12-01 18:03:24,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 18:03:24,143 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 18:03:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 25 states and 36 transitions. [2020-12-01 18:03:24,294 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-12-01 18:03:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 18:03:24,295 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 18:03:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2020-12-01 18:03:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-12-01 18:03:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 18:03:24,432 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 18:03:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 27 states and 37 transitions. [2020-12-01 18:03:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-01 18:03:24,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 18:03:24,599 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 18:03:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 28 states and 38 transitions. [2020-12-01 18:03:24,713 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-01 18:03:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 18:03:24,715 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 18:03:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 29 states and 38 transitions. [2020-12-01 18:03:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2020-12-01 18:03:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 18:03:24,836 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:03:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:03:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-01 18:03:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:03:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 30 states and 44 transitions. [2020-12-01 18:03:25,133 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-12-01 18:03:25,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 18:03:25,142 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 12 iterations. [2020-12-01 18:03:25,151 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-12-01 18:03:25,205 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:03:25,209 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:03:25,209 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:03:25,209 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:03:25,209 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:03:25,209 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:03:25,209 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:03:25,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:03:25 ImpRootNode [2020-12-01 18:03:25,210 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:03:25,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:03:25,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:03:25,211 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:03:25,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:03:23" (3/4) ... [2020-12-01 18:03:25,215 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 18:03:25,226 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-12-01 18:03:25,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-01 18:03:25,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 18:03:25,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 18:03:25,321 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6f3de3a7-ba96-4b06-89f7-66c919efeb2e/bin/ukojak/witness.graphml [2020-12-01 18:03:25,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:03:25,323 INFO L168 Benchmark]: Toolchain (without parser) took 3412.33 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 45.9 MB in the beginning and 80.2 MB in the end (delta: -34.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:03:25,324 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 79.7 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:03:25,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.47 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 45.7 MB in the beginning and 84.4 MB in the end (delta: -38.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:03:25,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.64 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 82.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:03:25,326 INFO L168 Benchmark]: Boogie Preprocessor took 40.29 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 81.3 MB in the end (delta: 878.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:03:25,327 INFO L168 Benchmark]: RCFGBuilder took 759.04 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 56.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:03:25,328 INFO L168 Benchmark]: CodeCheck took 2033.30 ms. Allocated memory is still 107.0 MB. Free memory was 56.6 MB in the beginning and 83.5 MB in the end (delta: -26.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-12-01 18:03:25,328 INFO L168 Benchmark]: Witness Printer took 110.72 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 80.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 18:03:25,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 12, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21508 SDtfs, 8 SDslu, 4 SDs, 0 SdLazy, 16382 SolverSat, 10790 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1551 GetRequests, 1515 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 5517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 90/130 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 79.7 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 396.47 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 45.7 MB in the beginning and 84.4 MB in the end (delta: -38.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.64 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 82.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.29 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 81.3 MB in the end (delta: 878.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 759.04 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 56.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * CodeCheck took 2033.30 ms. Allocated memory is still 107.0 MB. Free memory was 56.6 MB in the beginning and 83.5 MB in the end (delta: -26.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * Witness Printer took 110.72 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 80.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...