./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.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_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/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 39bbda04ca16eb75ea07b4929f3af02faa55a8e5 .................................................................................................................................................................................................................................................................................................................................................. 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 04:32:59,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:32:59,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:32:59,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:32:59,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:32:59,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:32:59,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:32:59,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:32:59,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:33:00,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:33:00,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:33:00,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:33:00,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:33:00,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:33:00,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:33:00,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:33:00,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:33:00,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:33:00,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:33:00,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:33:00,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:33:00,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:33:00,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:33:00,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:33:00,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:33:00,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:33:00,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:33:00,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:33:00,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:33:00,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:33:00,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:33:00,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:33:00,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:33:00,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:33:00,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:33:00,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:33:00,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:33:00,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:33:00,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:33:00,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:33:00,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:33:00,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:33:00,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:33:00,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:33:00,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:33:00,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:33:00,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:33:00,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:33:00,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:33:00,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:33:00,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:33:00,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:33:00,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:33:00,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:33:00,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:33:00,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:33:00,108 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:33:00,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:33:00,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:33:00,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:33:00,108 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:33:00,109 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:33:00,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:33:00,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:33:00,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:33:00,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:33:00,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:33:00,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:33:00,110 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:33:00,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:33:00,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:33:00,110 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_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39bbda04ca16eb75ea07b4929f3af02faa55a8e5 [2020-11-28 04:33:00,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:33:00,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:33:00,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:33:00,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:33:00,451 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:33:00,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c [2020-11-28 04:33:00,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/data/d5aa912dc/382e7d59a9ca4e88b27ffcd0908155bb/FLAGcde60e813 [2020-11-28 04:33:01,039 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:33:01,040 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c [2020-11-28 04:33:01,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/data/d5aa912dc/382e7d59a9ca4e88b27ffcd0908155bb/FLAGcde60e813 [2020-11-28 04:33:01,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/data/d5aa912dc/382e7d59a9ca4e88b27ffcd0908155bb [2020-11-28 04:33:01,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:33:01,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:33:01,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:33:01,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:33:01,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:33:01,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e9e9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01, skipping insertion in model container [2020-11-28 04:33:01,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:33:01,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:33:01,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:33:01,652 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:33:01,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:33:01,711 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:33:01,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01 WrapperNode [2020-11-28 04:33:01,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:33:01,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:33:01,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:33:01,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:33:01,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:33:01,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:33:01,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:33:01,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:33:01,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2020-11-28 04:33:01,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:33:01,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:33:01,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:33:01,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:33:01,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/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 04:33:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:33:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:33:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:33:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:33:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-28 04:33:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-28 04:33:02,395 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:33:02,395 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 04:33:02,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:33:02 BoogieIcfgContainer [2020-11-28 04:33:02,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:33:02,400 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:33:02,400 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:33:02,410 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:33:02,411 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:33:02" (1/1) ... [2020-11-28 04:33:02,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:33:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 15 states and 20 transitions. [2020-11-28 04:33:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2020-11-28 04:33:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:33:02,474 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:02,626 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 04:33:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 15 states and 18 transitions. [2020-11-28 04:33:02,639 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2020-11-28 04:33:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:33:02,640 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:02,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 04:33:02,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:02,808 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 04:33:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2020-11-28 04:33:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-11-28 04:33:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:33:02,866 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:02,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 04:33:02,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:02,971 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 04:33:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 22 states and 32 transitions. [2020-11-28 04:33:03,390 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2020-11-28 04:33:03,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 04:33:03,392 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:03,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 04:33:03,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:33:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 27 states and 46 transitions. [2020-11-28 04:33:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2020-11-28 04:33:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 04:33:04,064 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:04,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 04:33:04,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:33:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 35 states and 68 transitions. [2020-11-28 04:33:05,578 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 68 transitions. [2020-11-28 04:33:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 04:33:05,580 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:05,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 04:33:05,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:33:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 39 states and 79 transitions. [2020-11-28 04:33:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 79 transitions. [2020-11-28 04:33:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 04:33:06,413 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:06,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 04:33:06,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:33:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 41 states and 81 transitions. [2020-11-28 04:33:06,827 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 81 transitions. [2020-11-28 04:33:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 04:33:06,828 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:06,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 04:33:06,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:07,610 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:33:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 04:33:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 45 states and 97 transitions. [2020-11-28 04:33:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 97 transitions. [2020-11-28 04:33:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:33:09,261 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:09,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 04:33:09,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:09,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 04:33:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 04:33:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:12,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 54 states and 128 transitions. [2020-11-28 04:33:12,107 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 128 transitions. [2020-11-28 04:33:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:33:12,109 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:12,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 04:33:12,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:12,261 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 04:33:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 04:33:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 56 states and 130 transitions. [2020-11-28 04:33:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 130 transitions. [2020-11-28 04:33:12,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 04:33:12,928 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:33:12,968 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:33:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:33:12,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:33:13,014 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2020-11-28 04:33:13,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:33:13 ImpRootNode [2020-11-28 04:33:13,068 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:33:13,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:33:13,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:33:13,084 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:33:13,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:33:02" (3/4) ... [2020-11-28 04:33:13,087 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:33:13,207 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b6a713e6-fdf4-4a70-a4b4-fa4a8e0ac59b/bin/ukojak/witness.graphml [2020-11-28 04:33:13,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:33:13,211 INFO L168 Benchmark]: Toolchain (without parser) took 11806.62 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 69.5 MB in the beginning and 69.2 MB in the end (delta: 309.9 kB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:13,211 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 77.7 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:33:13,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.03 ms. Allocated memory is still 104.9 MB. Free memory was 69.4 MB in the beginning and 80.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:13,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.90 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 79.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:13,214 INFO L168 Benchmark]: Boogie Preprocessor took 42.27 ms. Allocated memory is still 104.9 MB. Free memory was 79.2 MB in the beginning and 78.2 MB in the end (delta: 963.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:33:13,215 INFO L168 Benchmark]: RCFGBuilder took 601.47 ms. Allocated memory is still 104.9 MB. Free memory was 78.2 MB in the beginning and 64.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:13,215 INFO L168 Benchmark]: CodeCheck took 10668.59 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 64.5 MB in the beginning and 72.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:13,216 INFO L168 Benchmark]: Witness Printer took 124.75 ms. Allocated memory is still 125.8 MB. Free memory was 72.4 MB in the beginning and 69.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:13,227 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, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.5s, OverallIterations: 11, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8992 SDtfs, 432 SDslu, 1184 SDs, 0 SdLazy, 21624 SolverSat, 7912 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1603 GetRequests, 1425 SyntacticMatches, 30 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9094 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 8344 SizeOfPredicates, 19 NumberOfNonLiveVariables, 649 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 28/48 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [counter=0] [L27] EXPR counter++ VAL [counter=1] [L27] COND TRUE counter++<2 [L28] CALL __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [counter=1] [L10] COND FALSE !(!(cond)) VAL [counter=1] [L28] RET __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [counter=1] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=1] [L27] EXPR counter++ VAL [counter=2] [L27] COND TRUE counter++<2 [L28] CALL __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [counter=2] [L10] COND FALSE !(!(cond)) VAL [counter=2] [L28] RET __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [counter=2] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=2] [L27] EXPR counter++ VAL [counter=3] [L27] COND FALSE !(counter++<2) [L37] CALL __VERIFIER_assert(k*y - (y*y) == 0) VAL [counter=3] [L10] COND TRUE !(cond) VAL [counter=3] [L3] __assert_fail("0", "ps4-ll.c", 3, "reach_error") VAL [counter=3] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 77.7 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.03 ms. Allocated memory is still 104.9 MB. Free memory was 69.4 MB in the beginning and 80.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.90 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 79.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.27 ms. Allocated memory is still 104.9 MB. Free memory was 79.2 MB in the beginning and 78.2 MB in the end (delta: 963.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 601.47 ms. Allocated memory is still 104.9 MB. Free memory was 78.2 MB in the beginning and 64.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * CodeCheck took 10668.59 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 64.5 MB in the beginning and 72.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Witness Printer took 124.75 ms. Allocated memory is still 125.8 MB. Free memory was 72.4 MB in the beginning and 69.2 MB in the end (delta: 3.1 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...