./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007b.i --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_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007b.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/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 d6c7a19e50bb32a5896b861b4b348ab0b4232809 .................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:33:32,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:33:32,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:33:32,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:33:33,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:33:33,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:33:33,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:33:33,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:33:33,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:33:33,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:33:33,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:33:33,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:33:33,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:33:33,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:33:33,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:33:33,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:33:33,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:33:33,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:33:33,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:33:33,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:33:33,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:33:33,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:33:33,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:33:33,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:33:33,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:33:33,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:33:33,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:33:33,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:33:33,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:33:33,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:33:33,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:33:33,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:33:33,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:33:33,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:33:33,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:33:33,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:33:33,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:33:33,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:33:33,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:33:33,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:33:33,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:33:33,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-29 23:33:33,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:33:33,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:33:33,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-29 23:33:33,122 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-29 23:33:33,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:33:33,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:33:33,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:33:33,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:33:33,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:33:33,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:33:33,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:33:33,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:33:33,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:33:33,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:33:33,126 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:33:33,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:33:33,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:33:33,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:33:33,127 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 23:33:33,127 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 23:33:33,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:33:33,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:33:33,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 23:33:33,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:33:33,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:33:33,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:33:33,129 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 23:33:33,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:33:33,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:33:33,131 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_cc2ec1f3-1a14-40cf-b307-c51ac061271c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c7a19e50bb32a5896b861b4b348ab0b4232809 [2020-11-29 23:33:33,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:33:33,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:33:33,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:33:33,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:33:33,493 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:33:33,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/../../sv-benchmarks/c/loop-lit/gj2007b.i [2020-11-29 23:33:33,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/data/ba864545e/b70ee949547b4d7fa868cf375e041cd8/FLAG0499fba44 [2020-11-29 23:33:34,192 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:33:34,193 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/sv-benchmarks/c/loop-lit/gj2007b.i [2020-11-29 23:33:34,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/data/ba864545e/b70ee949547b4d7fa868cf375e041cd8/FLAG0499fba44 [2020-11-29 23:33:34,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/data/ba864545e/b70ee949547b4d7fa868cf375e041cd8 [2020-11-29 23:33:34,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:33:34,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:33:34,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:33:34,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:33:34,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:33:34,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c08936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34, skipping insertion in model container [2020-11-29 23:33:34,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:33:34,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:33:34,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:33:34,803 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:33:34,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:33:34,839 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:33:34,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34 WrapperNode [2020-11-29 23:33:34,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:33:34,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:33:34,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:33:34,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:33:34,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:33:34,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:33:34,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:33:34,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:33:34,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... [2020-11-29 23:33:34,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:33:34,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:33:34,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:33:34,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:33:34,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/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 [2020-11-29 23:33:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:33:34,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:33:34,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:33:34,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:33:34,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-29 23:33:34,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-29 23:33:35,535 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:33:35,536 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 23:33:35,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:33:35 BoogieIcfgContainer [2020-11-29 23:33:35,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:33:35,540 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 23:33:35,540 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 23:33:35,554 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 23:33:35,554 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:33:35" (1/1) ... [2020-11-29 23:33:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:33:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:33:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 14 states and 17 transitions. [2020-11-29 23:33:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-11-29 23:33:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 23:33:35,629 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:33:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:33:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:33:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:33:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 17 states and 23 transitions. [2020-11-29 23:33:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2020-11-29 23:33:36,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:33:36,017 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:33:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:33:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:33:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:33:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 18 states and 26 transitions. [2020-11-29 23:33:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2020-11-29 23:33:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:33:36,243 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:33:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:33:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:33:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:33:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 20 states and 32 transitions. [2020-11-29 23:33:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 32 transitions. [2020-11-29 23:33:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:33:36,583 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:33:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:33:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:33:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:33:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 23 transitions. [2020-11-29 23:33:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2020-11-29 23:33:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:33:36,957 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:33:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:33:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:33:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:33:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 20 states and 29 transitions. [2020-11-29 23:33:37,258 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2020-11-29 23:33:37,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:33:37,259 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:33:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:33:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:33:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:33:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 31 transitions. [2020-11-29 23:33:37,418 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2020-11-29 23:33:37,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:33:37,419 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:33:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:33:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:33:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:33:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 16 states and 25 transitions. [2020-11-29 23:33:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 25 transitions. [2020-11-29 23:33:38,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:33:38,142 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 8 iterations. [2020-11-29 23:33:38,149 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-11-29 23:33:38,240 INFO L569 CodeCheckObserver]: Invariant with dag size 17 [2020-11-29 23:33:38,250 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-29 23:33:38,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 11:33:38 ImpRootNode [2020-11-29 23:33:38,252 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 23:33:38,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:33:38,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:33:38,253 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:33:38,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:33:35" (3/4) ... [2020-11-29 23:33:38,257 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:33:38,273 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2020-11-29 23:33:38,279 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-29 23:33:38,281 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-29 23:33:38,281 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 23:33:38,282 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:33:38,371 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cc2ec1f3-1a14-40cf-b307-c51ac061271c/bin/ukojak/witness.graphml [2020-11-29 23:33:38,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:33:38,374 INFO L168 Benchmark]: Toolchain (without parser) took 3841.27 ms. Allocated memory was 109.1 MB in the beginning and 151.0 MB in the end (delta: 41.9 MB). Free memory was 76.8 MB in the beginning and 66.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:38,375 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory is still 31.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:33:38,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.25 ms. Allocated memory is still 109.1 MB. Free memory was 76.5 MB in the beginning and 86.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:38,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.59 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:38,377 INFO L168 Benchmark]: Boogie Preprocessor took 21.70 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:33:38,378 INFO L168 Benchmark]: RCFGBuilder took 635.69 ms. Allocated memory is still 109.1 MB. Free memory was 83.3 MB in the beginning and 68.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:38,379 INFO L168 Benchmark]: CodeCheck took 2712.26 ms. Allocated memory was 109.1 MB in the beginning and 151.0 MB in the end (delta: 41.9 MB). Free memory was 68.2 MB in the beginning and 68.4 MB in the end (delta: -194.9 kB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:38,380 INFO L168 Benchmark]: Witness Printer took 118.74 ms. Allocated memory is still 151.0 MB. Free memory was 68.4 MB in the beginning and 66.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:38,386 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: SAFE, OverallTime: 2.5s, OverallIterations: 8, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 636 SDtfs, 196 SDslu, 288 SDs, 0 SdLazy, 2476 SolverSat, 1052 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 688 GetRequests, 632 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 2038 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 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 - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((x == 0 && m == 0) || (m == 0 && 1 <= x)) || ((2 <= x && m + 1 <= n) && 1 <= m) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory is still 31.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.25 ms. Allocated memory is still 109.1 MB. Free memory was 76.5 MB in the beginning and 86.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.59 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.70 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 635.69 ms. Allocated memory is still 109.1 MB. Free memory was 83.3 MB in the beginning and 68.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * CodeCheck took 2712.26 ms. Allocated memory was 109.1 MB in the beginning and 151.0 MB in the end (delta: 41.9 MB). Free memory was 68.2 MB in the beginning and 68.4 MB in the end (delta: -194.9 kB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. * Witness Printer took 118.74 ms. Allocated memory is still 151.0 MB. Free memory was 68.4 MB in the beginning and 66.3 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 correct! Received shutdown request...