./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_1b.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_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_1b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/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 c1836be5ce35667bc02ed393f2cbc8396b48b5bb ....................................................................................................................................................................................................................................................................... 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 [2020-11-28 04:43:56,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:43:56,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:43:56,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:43:56,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:43:56,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:43:56,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:43:56,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:43:56,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:43:56,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:43:56,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:43:56,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:43:56,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:43:56,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:43:56,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:43:56,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:43:56,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:43:56,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:43:56,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:43:56,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:43:56,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:43:56,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:43:56,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:43:56,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:43:56,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:43:56,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:43:56,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:43:56,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:43:56,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:43:56,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:43:56,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:43:56,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:43:56,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:43:56,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:43:56,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:43:56,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:43:56,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:43:56,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:43:56,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:43:56,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:43:56,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:43:56,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:43:56,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:43:56,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:43:56,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:43:56,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:43:56,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:43:56,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:43:56,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:43:56,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:43:56,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:43:56,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:43:56,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:43:56,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:43:56,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:43:56,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:43:56,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:43:56,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:43:56,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:43:56,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:43:56,387 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:43:56,387 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:43:56,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:43:56,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:43:56,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:43:56,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:43:56,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:43:56,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:43:56,389 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:43:56,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:43:56,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:43:56,390 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_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1836be5ce35667bc02ed393f2cbc8396b48b5bb [2020-11-28 04:43:56,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:43:56,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:43:56,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:43:56,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:43:56,676 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:43:56,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/../../sv-benchmarks/c/loop-simple/nested_1b.c [2020-11-28 04:43:56,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/data/81462e3b8/ce37938d9cdf4db889b3cd8f780ef954/FLAG305011cf3 [2020-11-28 04:43:57,327 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:43:57,328 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/sv-benchmarks/c/loop-simple/nested_1b.c [2020-11-28 04:43:57,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/data/81462e3b8/ce37938d9cdf4db889b3cd8f780ef954/FLAG305011cf3 [2020-11-28 04:43:57,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/data/81462e3b8/ce37938d9cdf4db889b3cd8f780ef954 [2020-11-28 04:43:57,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:43:57,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:43:57,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:43:57,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:43:57,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:43:57,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1459b9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57, skipping insertion in model container [2020-11-28 04:43:57,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:43:57,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:43:57,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:43:57,894 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:43:57,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:43:57,924 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:43:57,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57 WrapperNode [2020-11-28 04:43:57,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:43:57,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:43:57,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:43:57,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:43:57,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:43:57,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:43:57,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:43:57,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:43:57,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... [2020-11-28 04:43:57,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:43:57,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:43:57,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:43:57,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:43:57,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/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 [2020-11-28 04:43:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:43:58,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:43:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:43:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:43:58,417 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:43:58,417 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 04:43:58,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:58 BoogieIcfgContainer [2020-11-28 04:43:58,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:43:58,420 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:43:58,421 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:43:58,437 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:43:58,437 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:43:58,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2020-11-28 04:43:58,477 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2020-11-28 04:43:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:43:58,480 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:43:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:43:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2020-11-28 04:43:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-11-28 04:43:58,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 04:43:58,674 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:43:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:43:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2020-11-28 04:43:58,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2020-11-28 04:43:58,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:43:58,796 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:43:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:43:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2020-11-28 04:43:58,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-28 04:43:58,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:43:58,963 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:43:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:43:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2020-11-28 04:43:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-28 04:43:59,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:43:59,170 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:43:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:43:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2020-11-28 04:43:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-28 04:43:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:43:59,321 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:43:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:43:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2020-11-28 04:43:59,532 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-11-28 04:43:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:43:59,533 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:43:59,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:43:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:43:59,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:43:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:43:59,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:43:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:43:59,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:43:59,663 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2020-11-28 04:43:59,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:43:59 ImpRootNode [2020-11-28 04:43:59,689 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:43:59,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:43:59,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:43:59,690 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:43:59,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:58" (3/4) ... [2020-11-28 04:43:59,692 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:43:59,730 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cd8cb70f-3a40-4272-97ba-cfcf063eb76e/bin/ukojak/witness.graphml [2020-11-28 04:43:59,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:43:59,732 INFO L168 Benchmark]: Toolchain (without parser) took 2039.97 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 58.9 MB in the beginning and 74.7 MB in the end (delta: -15.8 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:43:59,733 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory was 50.3 MB in the beginning and 50.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:43:59,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.24 ms. Allocated memory is still 90.2 MB. Free memory was 58.8 MB in the beginning and 67.7 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:43:59,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.28 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:43:59,736 INFO L168 Benchmark]: Boogie Preprocessor took 19.40 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 65.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:43:59,737 INFO L168 Benchmark]: RCFGBuilder took 443.07 ms. Allocated memory is still 90.2 MB. Free memory was 65.5 MB in the beginning and 53.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:43:59,738 INFO L168 Benchmark]: CodeCheck took 1268.28 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.4 MB in the beginning and 76.8 MB in the end (delta: -23.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:43:59,739 INFO L168 Benchmark]: Witness Printer took 40.70 ms. Allocated memory is still 109.1 MB. Free memory was 76.8 MB in the beginning and 74.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:43:59,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 7, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 470 SolverSat, 346 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 254 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 0/35 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: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] int a = 6; [L19] a = 0 [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND FALSE !(a < 6) [L22] COND TRUE a == 6 [L13] __assert_fail("0", "nested_1b.c", 13, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory was 50.3 MB in the beginning and 50.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.24 ms. Allocated memory is still 90.2 MB. Free memory was 58.8 MB in the beginning and 67.7 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.28 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.40 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 65.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 443.07 ms. Allocated memory is still 90.2 MB. Free memory was 65.5 MB in the beginning and 53.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 1268.28 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.4 MB in the beginning and 76.8 MB in the end (delta: -23.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 40.70 ms. Allocated memory is still 109.1 MB. Free memory was 76.8 MB in the beginning and 74.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...