./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_10x0-2.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_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/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 62383dd39c4465d1f3b7424ac172d9121521b446 ..................................................................................................................................................................................................................................................................................................................................................................... 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 17:42:48,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:42:48,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:42:49,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:42:49,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:42:49,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:42:49,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:42:49,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:42:49,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:42:49,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:42:49,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:42:49,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:42:49,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:42:49,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:42:49,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:42:49,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:42:49,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:42:49,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:42:49,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:42:49,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:42:49,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:42:49,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:42:49,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:42:49,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:42:49,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:42:49,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:42:49,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:42:49,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:42:49,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:42:49,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:42:49,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:42:49,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:42:49,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:42:49,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:42:49,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:42:49,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:42:49,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:42:49,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:42:49,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:42:49,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:42:49,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:42:49,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 17:42:49,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:42:49,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:42:49,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:42:49,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:42:49,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:42:49,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:42:49,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:42:49,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:42:49,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:42:49,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:42:49,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:42:49,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:42:49,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:42:49,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:42:49,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:42:49,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:42:49,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:42:49,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:42:49,198 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:42:49,199 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:42:49,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:42:49,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:42:49,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:42:49,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:42:49,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:42:49,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:42:49,200 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:42:49,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:42:49,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:42:49,201 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_6e756073-545d-49e7-9aab-331ad1fda213/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62383dd39c4465d1f3b7424ac172d9121521b446 [2020-12-01 17:42:49,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:42:49,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:42:49,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:42:49,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:42:49,533 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:42:49,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c [2020-12-01 17:42:49,621 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/data/7b21a2a67/cb1f713aed7745d6b00cb572a798424c/FLAG083238b71 [2020-12-01 17:42:50,111 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:42:50,112 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/sv-benchmarks/c/recursive-simple/sum_10x0-2.c [2020-12-01 17:42:50,118 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/data/7b21a2a67/cb1f713aed7745d6b00cb572a798424c/FLAG083238b71 [2020-12-01 17:42:50,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/data/7b21a2a67/cb1f713aed7745d6b00cb572a798424c [2020-12-01 17:42:50,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:42:50,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:42:50,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:42:50,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:42:50,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:42:50,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7e74ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50, skipping insertion in model container [2020-12-01 17:42:50,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:42:50,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:42:50,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:42:50,721 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:42:50,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:42:50,754 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:42:50,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50 WrapperNode [2020-12-01 17:42:50,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:42:50,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:42:50,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:42:50,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:42:50,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:42:50,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:42:50,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:42:50,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:42:50,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... [2020-12-01 17:42:50,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:42:50,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:42:50,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:42:50,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:42:50,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:42:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/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 17:42:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:42:50,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:42:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-12-01 17:42:50,906 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-12-01 17:42:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:42:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:42:51,222 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:42:51,222 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 17:42:51,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:42:51 BoogieIcfgContainer [2020-12-01 17:42:51,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:42:51,226 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:42:51,227 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:42:51,251 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:42:51,251 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:42:51" (1/1) ... [2020-12-01 17:42:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:42:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-12-01 17:42:51,341 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-01 17:42:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 17:42:51,352 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:51,574 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 17:42:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 18 transitions. [2020-12-01 17:42:51,668 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-01 17:42:51,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 17:42:51,669 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:42:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 23 transitions. [2020-12-01 17:42:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-01 17:42:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 17:42:51,870 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-01 17:42:52,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 22 states and 29 transitions. [2020-12-01 17:42:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2020-12-01 17:42:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 17:42:52,101 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 17:42:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 25 states and 36 transitions. [2020-12-01 17:42:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-12-01 17:42:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 17:42:52,445 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-01 17:42:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 28 states and 44 transitions. [2020-12-01 17:42:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2020-12-01 17:42:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 17:42:52,786 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-01 17:42:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 31 states and 53 transitions. [2020-12-01 17:42:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2020-12-01 17:42:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 17:42:53,126 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-01 17:42:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:53,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 34 states and 63 transitions. [2020-12-01 17:42:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 63 transitions. [2020-12-01 17:42:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 17:42:53,452 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-12-01 17:42:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 37 states and 74 transitions. [2020-12-01 17:42:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 74 transitions. [2020-12-01 17:42:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-01 17:42:53,779 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-12-01 17:42:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 40 states and 86 transitions. [2020-12-01 17:42:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 86 transitions. [2020-12-01 17:42:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-01 17:42:54,171 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:42:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-12-01 17:42:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:42:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 43 states and 99 transitions. [2020-12-01 17:42:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 99 transitions. [2020-12-01 17:42:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-01 17:42:54,595 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:42:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:42:54,662 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:42:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:42:54,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:42:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:42:54,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:42:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:42:54,862 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:42:55,254 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2020-12-01 17:42:55,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:42:55 ImpRootNode [2020-12-01 17:42:55,363 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:42:55,364 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:42:55,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:42:55,365 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:42:55,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:42:51" (3/4) ... [2020-12-01 17:42:55,368 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 17:42:55,503 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6e756073-545d-49e7-9aab-331ad1fda213/bin/ukojak/witness.graphml [2020-12-01 17:42:55,507 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:42:55,511 INFO L168 Benchmark]: Toolchain (without parser) took 5001.46 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 70.4 MB in the beginning and 58.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 16.1 GB. [2020-12-01 17:42:55,512 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 59.9 MB in the beginning and 59.9 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:42:55,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.68 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 70.2 MB in the beginning and 96.3 MB in the end (delta: -26.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 17:42:55,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.72 ms. Allocated memory is still 119.5 MB. Free memory was 96.3 MB in the beginning and 95.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:42:55,515 INFO L168 Benchmark]: Boogie Preprocessor took 20.29 ms. Allocated memory is still 119.5 MB. Free memory was 95.1 MB in the beginning and 94.2 MB in the end (delta: 901.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:42:55,517 INFO L168 Benchmark]: RCFGBuilder took 410.08 ms. Allocated memory is still 119.5 MB. Free memory was 94.2 MB in the beginning and 81.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 17:42:55,518 INFO L168 Benchmark]: CodeCheck took 4137.14 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 81.6 MB in the beginning and 62.4 MB in the end (delta: 19.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 16.1 GB. [2020-12-01 17:42:55,518 INFO L168 Benchmark]: Witness Printer took 144.58 ms. Allocated memory is still 144.7 MB. Free memory was 62.4 MB in the beginning and 58.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 17:42:55,522 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 11, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7168 SDtfs, 6648 SDslu, 10736 SDs, 0 SdLazy, 31118 SolverSat, 5626 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3873 GetRequests, 3598 SyntacticMatches, 233 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 38720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/900 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: [L14] int a = 10; [L15] int b = 0; [L16] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=10] [L6] COND FALSE !(n <= 0) VAL [\old(m)=0, \old(n)=10, m=0, n=10] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=9] [L6] COND FALSE !(n <= 0) VAL [\old(m)=1, \old(n)=9, m=1, n=9] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=8] [L6] COND FALSE !(n <= 0) VAL [\old(m)=2, \old(n)=8, m=2, n=8] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=7] [L6] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=7, m=3, n=7] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=6] [L6] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=6, m=4, n=6] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=5] [L6] COND FALSE !(n <= 0) VAL [\old(m)=5, \old(n)=5, m=5, n=5] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=4] [L6] COND FALSE !(n <= 0) VAL [\old(m)=6, \old(n)=4, m=6, n=4] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=3] [L6] COND FALSE !(n <= 0) VAL [\old(m)=7, \old(n)=3, m=7, n=3] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=2] [L6] COND FALSE !(n <= 0) VAL [\old(m)=8, \old(n)=2, m=8, n=2] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=1] [L6] COND FALSE !(n <= 0) VAL [\old(m)=9, \old(n)=1, m=9, n=1] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=0] [L6] COND TRUE n <= 0 [L7] return m + n; VAL [\old(m)=10, \old(n)=0, \result=10, m=10, n=0] [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=1, m=9, n=1, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=2, m=8, n=2, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=3, m=7, n=3, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=4, m=6, n=4, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=5, m=5, n=5, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=6, m=4, n=6, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=7, m=3, n=7, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=8, m=2, n=8, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=9, m=1, n=9, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=10, m=0, n=10, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L16] RET, EXPR sum(a, b) [L16] int result = sum(a, b); [L17] COND TRUE result == a + b [L3] __assert_fail("0", "sum_10x0-2.c", 3, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 59.9 MB in the beginning and 59.9 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.68 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 70.2 MB in the beginning and 96.3 MB in the end (delta: -26.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.72 ms. Allocated memory is still 119.5 MB. Free memory was 96.3 MB in the beginning and 95.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.29 ms. Allocated memory is still 119.5 MB. Free memory was 95.1 MB in the beginning and 94.2 MB in the end (delta: 901.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 410.08 ms. Allocated memory is still 119.5 MB. Free memory was 94.2 MB in the beginning and 81.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 4137.14 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 81.6 MB in the beginning and 62.4 MB in the end (delta: 19.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 16.1 GB. * Witness Printer took 144.58 ms. Allocated memory is still 144.7 MB. Free memory was 62.4 MB in the beginning and 58.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...