./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/even.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-invariants/even.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/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 646c8f57db5f337253f8004dffb03bb18ecf1769 .................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 18:23:53,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:23:53,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:23:53,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:23:53,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:23:53,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:23:53,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:23:53,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:23:53,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:23:53,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:23:53,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:23:53,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:23:53,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:23:53,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:23:53,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:23:53,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:23:53,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:23:53,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:23:53,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:23:53,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:23:53,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:23:53,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:23:53,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:23:53,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:23:53,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:23:53,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:23:53,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:23:53,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:23:53,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:23:53,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:23:53,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:23:53,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:23:53,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:23:53,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:23:53,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:23:53,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:23:53,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:23:53,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:23:53,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:23:53,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:23:53,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:23:53,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 18:23:53,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:23:53,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:23:53,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:23:53,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:23:53,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:23:53,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:23:53,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:23:53,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:23:53,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:23:53,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:23:53,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:23:53,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:23:53,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:23:53,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:23:53,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:23:53,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:23:53,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:23:53,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:23:53,604 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:23:53,604 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:23:53,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:23:53,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:23:53,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:23:53,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:23:53,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:23:53,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:23:53,606 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:23:53,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:23:53,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:23:53,608 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_eedf0046-ed10-4fed-82e4-7135de031879/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 646c8f57db5f337253f8004dffb03bb18ecf1769 [2020-12-01 18:23:53,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:23:53,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:23:53,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:23:53,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:23:53,898 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:23:53,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/../../sv-benchmarks/c/loop-invariants/even.c [2020-12-01 18:23:53,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/data/a4e14387a/0547fa7e7dbe49059f04c5168345ed79/FLAGdc39ae232 [2020-12-01 18:23:54,388 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:23:54,389 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/sv-benchmarks/c/loop-invariants/even.c [2020-12-01 18:23:54,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/data/a4e14387a/0547fa7e7dbe49059f04c5168345ed79/FLAGdc39ae232 [2020-12-01 18:23:54,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/data/a4e14387a/0547fa7e7dbe49059f04c5168345ed79 [2020-12-01 18:23:54,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:23:54,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:23:54,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:23:54,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:23:54,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:23:54,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:23:54" (1/1) ... [2020-12-01 18:23:54,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e05185a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:54, skipping insertion in model container [2020-12-01 18:23:54,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:23:54" (1/1) ... [2020-12-01 18:23:54,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:23:54,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:23:55,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:23:55,030 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:23:55,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:23:55,058 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:23:55,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55 WrapperNode [2020-12-01 18:23:55,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:23:55,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:23:55,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:23:55,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:23:55,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:23:55,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:23:55,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:23:55,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:23:55,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:23:55,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:23:55,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:23:55,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:23:55,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:23:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:23:55,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:23:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 18:23:55,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 18:23:55,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:23:55,525 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 18:23:55,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:23:55 BoogieIcfgContainer [2020-12-01 18:23:55,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:23:55,528 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:23:55,528 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:23:55,552 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:23:55,552 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:23:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2020-12-01 18:23:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2020-12-01 18:23:55,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 18:23:55,615 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:23:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-01 18:23:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-01 18:23:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 18:23:55,735 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:23:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2020-12-01 18:23:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-01 18:23:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 18:23:55,878 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:23:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2020-12-01 18:23:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-01 18:23:56,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 18:23:56,079 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 4 iterations. [2020-12-01 18:23:56,085 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-12-01 18:23:56,115 INFO L569 CodeCheckObserver]: Invariant with dag size 10 [2020-12-01 18:23:56,125 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:23:56,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:23:56 ImpRootNode [2020-12-01 18:23:56,126 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:23:56,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:23:56,127 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:23:56,127 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:23:56,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:23:55" (3/4) ... [2020-12-01 18:23:56,130 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 18:23:56,139 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-01 18:23:56,139 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-01 18:23:56,139 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-01 18:23:56,140 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 18:23:56,140 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 18:23:56,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eedf0046-ed10-4fed-82e4-7135de031879/bin/ukojak/witness.graphml [2020-12-01 18:23:56,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:23:56,178 INFO L168 Benchmark]: Toolchain (without parser) took 1363.73 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 63.1 MB in the beginning and 76.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-12-01 18:23:56,179 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:23:56,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.96 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 62.9 MB in the beginning and 87.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:23:56,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.75 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 85.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:23:56,182 INFO L168 Benchmark]: Boogie Preprocessor took 21.80 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:23:56,183 INFO L168 Benchmark]: RCFGBuilder took 410.49 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 71.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 18:23:56,183 INFO L168 Benchmark]: CodeCheck took 597.71 ms. Allocated memory is still 109.1 MB. Free memory was 71.8 MB in the beginning and 78.2 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:23:56,184 INFO L168 Benchmark]: Witness Printer took 49.72 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 76.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:23:56,189 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, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 4, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 24 SDslu, 32 SDs, 0 SdLazy, 70 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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: 3]: 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: 13]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2)) || x == 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.96 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 62.9 MB in the beginning and 87.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.75 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 85.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.80 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 410.49 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 71.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 597.71 ms. Allocated memory is still 109.1 MB. Free memory was 71.8 MB in the beginning and 78.2 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 49.72 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 76.1 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...