./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_o20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_o20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/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 a54fd98af675d3e485f3e615c8444fd8c5970ebc ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-30 01:21:26,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:21:26,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:21:26,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:21:26,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:21:26,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:21:26,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:21:26,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:21:26,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:21:26,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:21:26,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:21:26,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:21:26,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:21:26,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:21:26,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:21:26,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:21:26,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:21:26,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:21:26,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:21:26,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:21:26,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:21:26,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:21:26,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:21:26,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:21:26,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:21:26,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:21:26,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:21:26,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:21:26,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:21:26,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:21:26,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:21:26,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:21:26,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:21:26,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:21:26,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:21:26,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:21:26,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:21:26,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:21:26,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:21:26,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:21:26,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:21:26,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-30 01:21:26,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:21:26,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:21:26,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:21:26,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-30 01:21:26,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:21:26,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:21:26,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:21:26,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:21:26,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:21:26,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:21:26,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:21:26,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:21:26,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:21:26,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:21:26,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:21:26,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:21:26,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:21:26,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:21:26,295 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-30 01:21:26,296 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-30 01:21:26,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:21:26,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:21:26,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-30 01:21:26,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:21:26,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:21:26,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:21:26,297 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-30 01:21:26,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:21:26,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:21:26,300 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_6dcf725c-2842-4a1e-9100-403001c6585c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a54fd98af675d3e485f3e615c8444fd8c5970ebc [2020-11-30 01:21:26,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:21:26,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:21:26,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:21:26,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:21:26,630 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:21:26,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_o20.c [2020-11-30 01:21:26,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/data/a222b46ad/1820437a1e3c4702963473ebb51ab88e/FLAG311544c52 [2020-11-30 01:21:27,240 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:21:27,241 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/sv-benchmarks/c/recursive-simple/id_o20.c [2020-11-30 01:21:27,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/data/a222b46ad/1820437a1e3c4702963473ebb51ab88e/FLAG311544c52 [2020-11-30 01:21:27,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/data/a222b46ad/1820437a1e3c4702963473ebb51ab88e [2020-11-30 01:21:27,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:21:27,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:21:27,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:21:27,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:21:27,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:21:27,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656b7308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27, skipping insertion in model container [2020-11-30 01:21:27,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:21:27,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:21:27,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:21:27,813 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:21:27,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:21:27,858 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:21:27,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27 WrapperNode [2020-11-30 01:21:27,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:21:27,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:21:27,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:21:27,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:21:27,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:21:27,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:21:27,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:21:27,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:21:27,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... [2020-11-30 01:21:27,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:21:27,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:21:27,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:21:27,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:21:27,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/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 [2020-11-30 01:21:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:21:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:21:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:21:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-30 01:21:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-30 01:21:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:21:28,288 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:21:28,289 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:21:28,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:21:28 BoogieIcfgContainer [2020-11-30 01:21:28,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:21:28,292 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-30 01:21:28,292 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-30 01:21:28,313 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-30 01:21:28,316 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:21:28" (1/1) ... [2020-11-30 01:21:28,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:21:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-11-30 01:21:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-30 01:21:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:21:28,372 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:28,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2020-11-30 01:21:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-30 01:21:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:21:28,820 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:21:29,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2020-11-30 01:21:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-30 01:21:29,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:21:29,364 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 01:21:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2020-11-30 01:21:30,251 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-30 01:21:30,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 01:21:30,253 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 01:21:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 33 states and 39 transitions. [2020-11-30 01:21:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-11-30 01:21:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 01:21:31,657 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-30 01:21:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 38 states and 45 transitions. [2020-11-30 01:21:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-11-30 01:21:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 01:21:32,897 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 01:21:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 43 states and 51 transitions. [2020-11-30 01:21:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-11-30 01:21:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-30 01:21:34,172 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-30 01:21:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 48 states and 57 transitions. [2020-11-30 01:21:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-11-30 01:21:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-30 01:21:35,635 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-30 01:21:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 53 states and 63 transitions. [2020-11-30 01:21:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-11-30 01:21:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-30 01:21:37,330 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-30 01:21:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 58 states and 69 transitions. [2020-11-30 01:21:39,470 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-11-30 01:21:39,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-30 01:21:39,471 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-30 01:21:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 63 states and 75 transitions. [2020-11-30 01:21:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2020-11-30 01:21:41,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-30 01:21:41,634 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-30 01:21:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:44,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 68 states and 81 transitions. [2020-11-30 01:21:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-11-30 01:21:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-30 01:21:44,002 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-30 01:21:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 73 states and 87 transitions. [2020-11-30 01:21:46,717 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2020-11-30 01:21:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-30 01:21:46,719 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-11-30 01:21:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 78 states and 93 transitions. [2020-11-30 01:21:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2020-11-30 01:21:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-30 01:21:49,595 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-30 01:21:52,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 83 states and 99 transitions. [2020-11-30 01:21:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2020-11-30 01:21:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-30 01:21:52,683 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-11-30 01:21:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 88 states and 105 transitions. [2020-11-30 01:21:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2020-11-30 01:21:56,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-30 01:21:56,230 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:21:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-11-30 01:21:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:21:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 93 states and 111 transitions. [2020-11-30 01:21:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2020-11-30 01:21:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-30 01:21:59,969 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:22:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:22:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-30 01:22:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:22:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 98 states and 117 transitions. [2020-11-30 01:22:04,408 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2020-11-30 01:22:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-30 01:22:04,410 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:22:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:22:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-30 01:22:08,406 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-30 01:22:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:22:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 103 states and 123 transitions. [2020-11-30 01:22:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2020-11-30 01:22:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-11-30 01:22:09,065 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:22:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:22:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-11-30 01:22:11,808 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-30 01:22:12,429 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-30 01:22:13,507 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-30 01:22:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:22:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 108 states and 129 transitions. [2020-11-30 01:22:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2020-11-30 01:22:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-30 01:22:14,703 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:22:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:22:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-11-30 01:22:18,578 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-30 01:22:19,372 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-30 01:22:19,962 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-30 01:22:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:22:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 113 states and 135 transitions. [2020-11-30 01:22:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2020-11-30 01:22:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-30 01:22:20,715 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:22:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:20,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:21,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:21,175 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:30,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:30,205 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 21 iterations. [2020-11-30 01:22:30,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 30.11 01:22:30 ImpRootNode [2020-11-30 01:22:30,361 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-30 01:22:30,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:22:30,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:22:30,362 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:22:30,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:21:28" (3/4) ... [2020-11-30 01:22:30,365 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:22:30,553 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6dcf725c-2842-4a1e-9100-403001c6585c/bin/ukojak/witness.graphml [2020-11-30 01:22:30,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:22:30,555 INFO L168 Benchmark]: Toolchain (without parser) took 62923.56 ms. Allocated memory was 92.3 MB in the beginning and 446.7 MB in the end (delta: 354.4 MB). Free memory was 64.7 MB in the beginning and 302.7 MB in the end (delta: -238.0 MB). Peak memory consumption was 115.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:30,560 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 63.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:22:30,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.15 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 71.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:30,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.53 ms. Allocated memory is still 92.3 MB. Free memory was 71.0 MB in the beginning and 69.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:22:30,562 INFO L168 Benchmark]: Boogie Preprocessor took 19.95 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:30,568 INFO L168 Benchmark]: RCFGBuilder took 374.02 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 56.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:30,568 INFO L168 Benchmark]: CodeCheck took 62069.38 ms. Allocated memory was 92.3 MB in the beginning and 446.7 MB in the end (delta: 354.4 MB). Free memory was 56.4 MB in the beginning and 307.9 MB in the end (delta: -251.5 MB). Peak memory consumption was 104.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:30,569 INFO L168 Benchmark]: Witness Printer took 191.77 ms. Allocated memory is still 446.7 MB. Free memory was 307.9 MB in the beginning and 302.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:30,571 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: 61.8s, OverallIterations: 21, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7340032 SDtfs, 3145724 SDslu, 5242872 SDs, 0 SdLazy, 27262936 SolverSat, 13631468 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7075 GetRequests, 6272 SyntacticMatches, 495 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34910 ImplicationChecksByTransitivity, 48.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 1449 NumberOfCodeBlocks, 1449 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 423296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 3800/7600 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: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int input = __VERIFIER_nondet_uint(); [L13] CALL, EXPR id(input) VAL [\old(x)=20] [L7] COND FALSE !(x==0) VAL [\old(x)=20, x=20] [L8] CALL, EXPR id(x-1) VAL [\old(x)=19] [L7] COND FALSE !(x==0) VAL [\old(x)=19, x=19] [L8] CALL, EXPR id(x-1) VAL [\old(x)=18] [L7] COND FALSE !(x==0) VAL [\old(x)=18, x=18] [L8] CALL, EXPR id(x-1) VAL [\old(x)=17] [L7] COND FALSE !(x==0) VAL [\old(x)=17, x=17] [L8] CALL, EXPR id(x-1) VAL [\old(x)=16] [L7] COND FALSE !(x==0) VAL [\old(x)=16, x=16] [L8] CALL, EXPR id(x-1) VAL [\old(x)=15] [L7] COND FALSE !(x==0) VAL [\old(x)=15, x=15] [L8] CALL, EXPR id(x-1) VAL [\old(x)=14] [L7] COND FALSE !(x==0) VAL [\old(x)=14, x=14] [L8] CALL, EXPR id(x-1) VAL [\old(x)=13] [L7] COND FALSE !(x==0) VAL [\old(x)=13, x=13] [L8] CALL, EXPR id(x-1) VAL [\old(x)=12] [L7] COND FALSE !(x==0) VAL [\old(x)=12, x=12] [L8] CALL, EXPR id(x-1) VAL [\old(x)=11] [L7] COND FALSE !(x==0) VAL [\old(x)=11, x=11] [L8] CALL, EXPR id(x-1) VAL [\old(x)=10] [L7] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L8] CALL, EXPR id(x-1) VAL [\old(x)=9] [L7] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L8] CALL, EXPR id(x-1) VAL [\old(x)=8] [L7] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L8] CALL, EXPR id(x-1) VAL [\old(x)=7] [L7] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L8] CALL, EXPR id(x-1) VAL [\old(x)=6] [L7] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L8] CALL, EXPR id(x-1) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0, x=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=6, id(x-1)=5, x=6] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=7, id(x-1)=6, x=7] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=8, id(x-1)=7, x=8] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=9, id(x-1)=8, x=9] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=10, id(x-1)=9, x=10] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=11, id(x-1)=10, x=11] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=12, id(x-1)=11, x=12] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=13, id(x-1)=12, x=13] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=14, id(x-1)=13, x=14] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=15, id(x-1)=14, x=15] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=16, id(x-1)=15, x=16] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=17, id(x-1)=16, x=17] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=18, id(x-1)=17, x=18] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=19, id(x-1)=18, x=19] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=20, id(x-1)=19, x=20] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) [L13] unsigned int result = id(input); [L14] COND TRUE result == 20 [L4] __assert_fail("0", "id_o20.c", 4, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 63.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.15 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 71.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.53 ms. Allocated memory is still 92.3 MB. Free memory was 71.0 MB in the beginning and 69.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.95 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 374.02 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 56.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 62069.38 ms. Allocated memory was 92.3 MB in the beginning and 446.7 MB in the end (delta: 354.4 MB). Free memory was 56.4 MB in the beginning and 307.9 MB in the end (delta: -251.5 MB). Peak memory consumption was 104.3 MB. Max. memory is 16.1 GB. * Witness Printer took 191.77 ms. Allocated memory is still 446.7 MB. Free memory was 307.9 MB in the beginning and 302.7 MB in the end (delta: 5.2 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...