./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/invert_string-1.c --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_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/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 1b9a71645175fee79e6d6cd797db38ce6044ffb9 ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 18:16:11,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:16:11,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:16:11,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:16:11,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:16:11,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:16:11,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:16:11,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:16:11,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:16:11,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:16:11,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:16:11,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:16:11,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:16:11,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:16:11,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:16:11,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:16:11,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:16:11,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:16:11,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:16:11,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:16:11,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:16:11,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:16:11,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:16:11,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:16:11,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:16:11,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:16:11,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:16:11,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:16:11,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:16:11,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:16:11,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:16:11,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:16:11,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:16:11,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:16:11,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:16:11,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:16:11,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:16:11,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:16:11,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:16:11,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:16:11,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:16:11,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 18:16:11,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:16:11,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:16:11,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:16:11,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:16:11,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:16:11,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:16:11,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:16:11,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:16:11,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:16:11,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:16:11,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:16:11,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:16:11,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:16:11,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:16:11,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:16:11,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:16:11,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:16:11,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:16:11,660 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:16:11,660 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:16:11,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:16:11,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:16:11,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:16:11,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:16:11,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:16:11,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:16:11,663 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:16:11,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:16:11,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:16:11,667 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_2d87fed3-b615-4ac8-9623-386b96a76704/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b9a71645175fee79e6d6cd797db38ce6044ffb9 [2020-12-01 18:16:12,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:16:12,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:16:12,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:16:12,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:16:12,114 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:16:12,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/../../sv-benchmarks/c/loops/invert_string-1.c [2020-12-01 18:16:12,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/data/5fe5dc6dc/f42fee0d45ad4d28b6d987d5e0aeea37/FLAGbad6e61ad [2020-12-01 18:16:12,813 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:16:12,813 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/sv-benchmarks/c/loops/invert_string-1.c [2020-12-01 18:16:12,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/data/5fe5dc6dc/f42fee0d45ad4d28b6d987d5e0aeea37/FLAGbad6e61ad [2020-12-01 18:16:13,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/data/5fe5dc6dc/f42fee0d45ad4d28b6d987d5e0aeea37 [2020-12-01 18:16:13,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:16:13,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:16:13,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:16:13,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:16:13,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:16:13,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9a2ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13, skipping insertion in model container [2020-12-01 18:16:13,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:16:13,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:16:13,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:16:13,504 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:16:13,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:16:13,543 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:16:13,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13 WrapperNode [2020-12-01 18:16:13,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:16:13,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:16:13,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:16:13,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:16:13,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:16:13,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:16:13,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:16:13,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:16:13,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... [2020-12-01 18:16:13,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:16:13,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:16:13,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:16:13,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:16:13,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:16:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/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 18:16:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 18:16:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 18:16:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 18:16:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:16:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:16:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 18:16:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 18:16:14,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:16:14,320 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-01 18:16:14,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:16:14 BoogieIcfgContainer [2020-12-01 18:16:14,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:16:14,324 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:16:14,324 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:16:14,355 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:16:14,355 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:16:14" (1/1) ... [2020-12-01 18:16:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:16:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 9 states and 12 transitions. [2020-12-01 18:16:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2020-12-01 18:16:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 18:16:14,448 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:14,697 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 18:16:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2020-12-01 18:16:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-12-01 18:16:14,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 18:16:14,784 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 18:16:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2020-12-01 18:16:15,131 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-12-01 18:16:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 18:16:15,132 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:16:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 17 states and 27 transitions. [2020-12-01 18:16:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2020-12-01 18:16:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 18:16:16,919 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:16:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 18 states and 27 transitions. [2020-12-01 18:16:18,268 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2020-12-01 18:16:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 18:16:18,269 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:16:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 19 states and 28 transitions. [2020-12-01 18:16:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 28 transitions. [2020-12-01 18:16:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 18:16:18,825 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:16:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 25 states and 41 transitions. [2020-12-01 18:16:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 41 transitions. [2020-12-01 18:16:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 18:16:21,991 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 18:16:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 29 states and 49 transitions. [2020-12-01 18:16:23,435 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 49 transitions. [2020-12-01 18:16:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 18:16:23,436 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:16:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 30 states and 51 transitions. [2020-12-01 18:16:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 51 transitions. [2020-12-01 18:16:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 18:16:24,920 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:16:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 31 states and 52 transitions. [2020-12-01 18:16:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 52 transitions. [2020-12-01 18:16:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 18:16:25,684 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:16:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:16:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:16:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 38 states and 66 transitions. [2020-12-01 18:16:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2020-12-01 18:16:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 18:16:30,516 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:16:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:16:30,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:16:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:16:30,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:16:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:16:30,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:16:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:16:30,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:16:31,112 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2020-12-01 18:16:31,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:16:31 ImpRootNode [2020-12-01 18:16:31,148 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:16:31,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:16:31,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:16:31,149 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:16:31,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:16:14" (3/4) ... [2020-12-01 18:16:31,152 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 18:16:31,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2d87fed3-b615-4ac8-9623-386b96a76704/bin/ukojak/witness.graphml [2020-12-01 18:16:31,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:16:31,229 INFO L168 Benchmark]: Toolchain (without parser) took 18057.10 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 64.1 MB in the beginning and 79.7 MB in the end (delta: -15.6 MB). Peak memory consumption was 96.0 MB. Max. memory is 16.1 GB. [2020-12-01 18:16:31,231 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 50.5 MB in the beginning and 50.5 MB in the end (delta: 26.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:16:31,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.26 ms. Allocated memory is still 96.5 MB. Free memory was 64.1 MB in the beginning and 73.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:16:31,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.90 ms. Allocated memory is still 96.5 MB. Free memory was 73.0 MB in the beginning and 71.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:16:31,234 INFO L168 Benchmark]: Boogie Preprocessor took 32.25 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 70.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:16:31,235 INFO L168 Benchmark]: RCFGBuilder took 696.54 ms. Allocated memory is still 96.5 MB. Free memory was 70.5 MB in the beginning and 46.9 MB in the end (delta: 23.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-01 18:16:31,235 INFO L168 Benchmark]: CodeCheck took 16824.00 ms. Allocated memory was 96.5 MB in the beginning and 207.6 MB in the end (delta: 111.1 MB). Free memory was 46.9 MB in the beginning and 81.8 MB in the end (delta: -34.9 MB). Peak memory consumption was 77.8 MB. Max. memory is 16.1 GB. [2020-12-01 18:16:31,236 INFO L168 Benchmark]: Witness Printer took 78.35 ms. Allocated memory is still 207.6 MB. Free memory was 81.8 MB in the beginning and 79.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:16:31,246 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, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.7s, OverallIterations: 11, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4096 SDtfs, 64 SDslu, 0 SDs, 0 SdLazy, 24514 SolverSat, 14026 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 922 GetRequests, 713 SyntacticMatches, 31 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16304 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 5838 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 16/51 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 - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] int MAX = __VERIFIER_nondet_uint(); [L17] COND FALSE !(!(MAX > 0)) [L18] char str1[MAX], str2[MAX]; [L19] int cont, i, j; [L20] cont = 0 [L22] i=0 [L22] COND TRUE i= 0 [L30] EXPR str1[0] [L30] str2[j] = str1[0] [L31] j++ [L29] i-- [L29] COND TRUE i >= 0 [L30] EXPR str1[0] [L30] str2[j] = str1[0] [L31] j++ [L29] i-- [L29] COND FALSE !(i >= 0) [L34] j = MAX-1 [L35] i=0 [L35] COND TRUE i