./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.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_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/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 25ea15f5ff8abe515b4cb496a6d70ce27fd2ceb9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 17:43:20,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:43:20,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:43:21,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:43:21,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:43:21,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:43:21,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:43:21,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:43:21,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:43:21,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:43:21,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:43:21,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:43:21,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:43:21,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:43:21,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:43:21,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:43:21,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:43:21,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:43:21,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:43:21,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:43:21,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:43:21,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:43:21,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:43:21,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:43:21,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:43:21,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:43:21,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:43:21,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:43:21,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:43:21,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:43:21,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:43:21,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:43:21,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:43:21,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:43:21,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:43:21,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:43:21,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:43:21,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:43:21,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:43:21,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:43:21,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:43:21,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 17:43:21,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:43:21,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:43:21,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:43:21,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:43:21,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:43:21,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:43:21,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:43:21,129 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:43:21,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:43:21,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:43:21,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:43:21,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:43:21,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:43:21,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:43:21,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:43:21,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:43:21,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:43:21,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:43:21,131 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:43:21,131 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:43:21,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:43:21,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:43:21,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:43:21,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:43:21,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:43:21,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:43:21,133 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:43:21,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:43:21,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:43:21,133 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_7601942a-98a8-4420-8137-d5d202f12291/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25ea15f5ff8abe515b4cb496a6d70ce27fd2ceb9 [2020-12-01 17:43:21,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:43:21,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:43:21,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:43:21,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:43:21,392 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:43:21,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2020-12-01 17:43:21,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/data/73ba7f1e3/3e127a645d7449b2b54b91af8b8dc2c7/FLAG41fcaa305 [2020-12-01 17:43:21,859 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:43:21,859 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2020-12-01 17:43:21,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/data/73ba7f1e3/3e127a645d7449b2b54b91af8b8dc2c7/FLAG41fcaa305 [2020-12-01 17:43:22,275 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/data/73ba7f1e3/3e127a645d7449b2b54b91af8b8dc2c7 [2020-12-01 17:43:22,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:43:22,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:43:22,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:43:22,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:43:22,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:43:22,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7428ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22, skipping insertion in model container [2020-12-01 17:43:22,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:43:22,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:43:22,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:43:22,504 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:43:22,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:43:22,539 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:43:22,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22 WrapperNode [2020-12-01 17:43:22,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:43:22,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:43:22,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:43:22,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:43:22,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:43:22,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:43:22,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:43:22,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:43:22,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:43:22,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:43:22,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:43:22,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:43:22,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:43:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/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 17:43:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:43:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:43:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:43:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-12-01 17:43:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-12-01 17:43:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:43:22,861 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:43:22,862 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 17:43:22,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:43:22 BoogieIcfgContainer [2020-12-01 17:43:22,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:43:22,866 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:43:22,866 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:43:22,883 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:43:22,884 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:43:22" (1/1) ... [2020-12-01 17:43:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:43:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-12-01 17:43:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-01 17:43:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 17:43:22,929 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:23,091 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 17:43:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2020-12-01 17:43:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-12-01 17:43:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 17:43:23,184 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:23,306 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 17:43:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 31 transitions. [2020-12-01 17:43:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-12-01 17:43:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 17:43:23,697 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:23,811 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 17:43:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 28 states and 42 transitions. [2020-12-01 17:43:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-12-01 17:43:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 17:43:24,199 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:24,351 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 17:43:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 33 states and 55 transitions. [2020-12-01 17:43:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2020-12-01 17:43:24,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 17:43:24,829 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:24,972 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 17:43:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 38 states and 70 transitions. [2020-12-01 17:43:25,481 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2020-12-01 17:43:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 17:43:25,482 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:25,577 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 17:43:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 43 states and 87 transitions. [2020-12-01 17:43:26,117 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 87 transitions. [2020-12-01 17:43:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 17:43:26,119 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:26,233 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 17:43:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 48 states and 106 transitions. [2020-12-01 17:43:26,784 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 106 transitions. [2020-12-01 17:43:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 17:43:26,787 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:26,938 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 17:43:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 53 states and 127 transitions. [2020-12-01 17:43:27,602 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 127 transitions. [2020-12-01 17:43:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-01 17:43:27,605 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:27,711 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 17:43:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 58 states and 150 transitions. [2020-12-01 17:43:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 150 transitions. [2020-12-01 17:43:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-01 17:43:28,468 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:28,648 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 17:43:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 63 states and 175 transitions. [2020-12-01 17:43:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 175 transitions. [2020-12-01 17:43:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-01 17:43:29,516 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-12-01 17:43:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 68 states and 202 transitions. [2020-12-01 17:43:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 202 transitions. [2020-12-01 17:43:30,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-01 17:43:30,545 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-12-01 17:43:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 73 states and 231 transitions. [2020-12-01 17:43:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 231 transitions. [2020-12-01 17:43:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-01 17:43:31,586 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-12-01 17:43:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 78 states and 262 transitions. [2020-12-01 17:43:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 262 transitions. [2020-12-01 17:43:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 17:43:32,627 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-12-01 17:43:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 83 states and 295 transitions. [2020-12-01 17:43:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 295 transitions. [2020-12-01 17:43:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-01 17:43:33,636 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-12-01 17:43:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 88 states and 330 transitions. [2020-12-01 17:43:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 330 transitions. [2020-12-01 17:43:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-01 17:43:34,731 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-12-01 17:43:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 93 states and 367 transitions. [2020-12-01 17:43:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 367 transitions. [2020-12-01 17:43:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-01 17:43:35,872 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-12-01 17:43:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 98 states and 406 transitions. [2020-12-01 17:43:37,059 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 406 transitions. [2020-12-01 17:43:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-01 17:43:37,061 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-12-01 17:43:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 103 states and 447 transitions. [2020-12-01 17:43:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 447 transitions. [2020-12-01 17:43:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-01 17:43:38,354 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-12-01 17:43:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 108 states and 490 transitions. [2020-12-01 17:43:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 490 transitions. [2020-12-01 17:43:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-01 17:43:39,923 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:43:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-12-01 17:43:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:43:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 113 states and 535 transitions. [2020-12-01 17:43:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 535 transitions. [2020-12-01 17:43:41,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-01 17:43:41,323 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:43:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:43:41,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:43:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:43:41,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:43:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:43:41,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:43:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:43:41,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:43:42,467 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 21 iterations. [2020-12-01 17:43:42,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:43:42 ImpRootNode [2020-12-01 17:43:42,632 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:43:42,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:43:42,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:43:42,633 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:43:42,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:43:22" (3/4) ... [2020-12-01 17:43:42,636 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 17:43:42,745 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7601942a-98a8-4420-8137-d5d202f12291/bin/ukojak/witness.graphml [2020-12-01 17:43:42,745 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:43:42,747 INFO L168 Benchmark]: Toolchain (without parser) took 20461.98 ms. Allocated memory was 83.9 MB in the beginning and 333.4 MB in the end (delta: 249.6 MB). Free memory was 54.7 MB in the beginning and 119.2 MB in the end (delta: -64.5 MB). Peak memory consumption was 184.6 MB. Max. memory is 16.1 GB. [2020-12-01 17:43:42,748 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 40.1 MB in the beginning and 40.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:43:42,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.48 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 54.4 MB in the beginning and 79.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:43:42,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.02 ms. Allocated memory is still 100.7 MB. Free memory was 79.0 MB in the beginning and 77.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:43:42,750 INFO L168 Benchmark]: Boogie Preprocessor took 17.04 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 76.5 MB in the end (delta: 829.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:43:42,750 INFO L168 Benchmark]: RCFGBuilder took 277.38 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 64.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 17:43:42,751 INFO L168 Benchmark]: CodeCheck took 19766.24 ms. Allocated memory was 100.7 MB in the beginning and 333.4 MB in the end (delta: 232.8 MB). Free memory was 64.4 MB in the beginning and 125.5 MB in the end (delta: -61.1 MB). Peak memory consumption was 174.8 MB. Max. memory is 16.1 GB. [2020-12-01 17:43:42,752 INFO L168 Benchmark]: Witness Printer took 112.82 ms. Allocated memory is still 333.4 MB. Free memory was 125.5 MB in the beginning and 119.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 17:43:42,757 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: 19.5s, OverallIterations: 21, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11534336 SDtfs, 9961456 SDslu, 9437168 SDs, 0 SdLazy, 58982010 SolverSat, 11796466 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28403 GetRequests, 27238 SyntacticMatches, 927 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21804 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1449 NumberOfCodeBlocks, 1449 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 282240 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] int input = 20; [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] int result = id(input); [L14] COND TRUE result == 20 [L4] __assert_fail("0", "id_i20_o20-2.c", 4, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 40.1 MB in the beginning and 40.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.48 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 54.4 MB in the beginning and 79.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.02 ms. Allocated memory is still 100.7 MB. Free memory was 79.0 MB in the beginning and 77.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.04 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 76.5 MB in the end (delta: 829.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 277.38 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 64.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 19766.24 ms. Allocated memory was 100.7 MB in the beginning and 333.4 MB in the end (delta: 232.8 MB). Free memory was 64.4 MB in the beginning and 125.5 MB in the end (delta: -61.1 MB). Peak memory consumption was 174.8 MB. Max. memory is 16.1 GB. * Witness Printer took 112.82 ms. Allocated memory is still 333.4 MB. Free memory was 125.5 MB in the beginning and 119.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...