./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.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_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/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 3e8b2633622084f06b754f22cb180cb188cb0d4f ................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:43:56,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:43:56,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:43:56,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:43:56,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:43:56,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:43:56,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:43:56,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:43:56,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:43:56,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:43:56,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:43:56,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:43:56,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:43:56,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:43:56,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:43:56,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:43:56,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:43:56,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:43:56,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:43:56,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:43:56,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:43:56,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:43:56,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:43:56,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:43:56,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:43:56,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:43:56,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:43:56,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:43:56,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:43:56,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:43:56,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:43:56,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:43:56,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:43:56,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:43:56,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:43:56,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:43:56,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:43:56,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:43:56,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:43:56,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:43:56,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:43:56,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:43:57,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:43:57,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:43:57,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:43:57,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:43:57,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:43:57,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:43:57,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:43:57,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:43:57,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:43:57,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:43:57,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:43:57,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:43:57,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:43:57,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:43:57,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:43:57,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:43:57,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:43:57,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:43:57,048 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:43:57,048 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:43:57,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:43:57,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:43:57,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:43:57,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:43:57,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:43:57,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:43:57,050 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:43:57,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:43:57,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:43:57,053 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_37b6860e-7275-4591-8bad-ac3936337b3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e8b2633622084f06b754f22cb180cb188cb0d4f [2020-11-28 04:43:57,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:43:57,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:43:57,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:43:57,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:43:57,416 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:43:57,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2020-11-28 04:43:57,503 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/data/30fc3e4d8/d9b2415770db42a799fc47909f2dab90/FLAG02a4439c5 [2020-11-28 04:43:58,036 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:43:58,037 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2020-11-28 04:43:58,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/data/30fc3e4d8/d9b2415770db42a799fc47909f2dab90/FLAG02a4439c5 [2020-11-28 04:43:58,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/data/30fc3e4d8/d9b2415770db42a799fc47909f2dab90 [2020-11-28 04:43:58,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:43:58,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:43:58,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:43:58,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:43:58,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:43:58,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0cd5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58, skipping insertion in model container [2020-11-28 04:43:58,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:43:58,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:43:58,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:43:58,705 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:43:58,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:43:58,765 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:43:58,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58 WrapperNode [2020-11-28 04:43:58,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:43:58,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:43:58,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:43:58,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:43:58,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:43:58,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:43:58,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:43:58,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:43:58,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... [2020-11-28 04:43:58,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:43:58,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:43:58,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:43:58,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:43:58,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:43:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-28 04:43:58,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-28 04:43:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:43:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:43:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:43:58,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:43:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-28 04:43:58,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-28 04:43:59,380 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:43:59,380 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 04:43:59,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:59 BoogieIcfgContainer [2020-11-28 04:43:59,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:43:59,384 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:43:59,384 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:43:59,398 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:43:59,398 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:59" (1/1) ... [2020-11-28 04:43:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:43:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 24 states and 34 transitions. [2020-11-28 04:43:59,462 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2020-11-28 04:43:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 04:43:59,466 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:43:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 04:43:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 24 states and 32 transitions. [2020-11-28 04:43:59,640 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2020-11-28 04:43:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 04:43:59,641 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:43:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 04:43:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:43:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 26 states and 35 transitions. [2020-11-28 04:43:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-11-28 04:43:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 04:43:59,911 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:43:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:00,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 04:44:00,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:44:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 04:44:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 31 states and 50 transitions. [2020-11-28 04:44:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2020-11-28 04:44:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 04:44:00,655 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:00,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 04:44:00,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:44:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 04:44:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 36 states and 61 transitions. [2020-11-28 04:44:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 61 transitions. [2020-11-28 04:44:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 04:44:01,822 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:01,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-28 04:44:01,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:44:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 04:44:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 35 states and 59 transitions. [2020-11-28 04:44:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 59 transitions. [2020-11-28 04:44:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 04:44:02,471 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:02,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-28 04:44:02,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:44:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 04:44:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 40 states and 70 transitions. [2020-11-28 04:44:03,754 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 70 transitions. [2020-11-28 04:44:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 04:44:03,757 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:03,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 04:44:03,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:44:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-28 04:44:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:03,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 41 states and 72 transitions. [2020-11-28 04:44:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 72 transitions. [2020-11-28 04:44:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 04:44:03,951 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:03,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:04,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:04,065 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2020-11-28 04:44:04,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:44:04 ImpRootNode [2020-11-28 04:44:04,143 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:44:04,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:44:04,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:44:04,144 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:44:04,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:59" (3/4) ... [2020-11-28 04:44:04,148 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:44:04,276 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_37b6860e-7275-4591-8bad-ac3936337b3c/bin/ukojak/witness.graphml [2020-11-28 04:44:04,277 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:44:04,279 INFO L168 Benchmark]: Toolchain (without parser) took 5871.16 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 65.1 MB in the beginning and 55.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:04,281 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory was 52.1 MB in the beginning and 52.0 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:04,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.05 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 64.9 MB in the beginning and 90.6 MB in the end (delta: -25.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:04,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.60 ms. Allocated memory is still 113.2 MB. Free memory was 90.6 MB in the beginning and 89.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:04,285 INFO L168 Benchmark]: Boogie Preprocessor took 23.78 ms. Allocated memory is still 113.2 MB. Free memory was 89.1 MB in the beginning and 87.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:04,286 INFO L168 Benchmark]: RCFGBuilder took 552.68 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 69.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:04,288 INFO L168 Benchmark]: CodeCheck took 4759.81 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 69.4 MB in the beginning and 58.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:04,290 INFO L168 Benchmark]: Witness Printer took 132.77 ms. Allocated memory is still 136.3 MB. Free memory was 58.7 MB in the beginning and 55.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:04,298 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 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2436 SDtfs, 148 SDslu, 256 SDs, 0 SdLazy, 2586 SolverSat, 770 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1197 GetRequests, 1111 SyntacticMatches, 14 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 7893 SizeOfPredicates, 15 NumberOfNonLiveVariables, 460 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 44/44 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int counter = 0; [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<1 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [counter=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [counter=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [counter=1] [L39] COND FALSE !(!(a != b)) [L42] COND FALSE !(a > b) [L47] b = b - a [L48] q = q - p [L49] s = s - r VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND FALSE !(counter++<1) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [counter=2] [L11] COND TRUE !(cond) VAL [counter=2] [L4] __assert_fail("0", "egcd-ll.c", 4, "reach_error") VAL [counter=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory was 52.1 MB in the beginning and 52.0 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.05 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 64.9 MB in the beginning and 90.6 MB in the end (delta: -25.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.60 ms. Allocated memory is still 113.2 MB. Free memory was 90.6 MB in the beginning and 89.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.78 ms. Allocated memory is still 113.2 MB. Free memory was 89.1 MB in the beginning and 87.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 552.68 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 69.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * CodeCheck took 4759.81 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 69.4 MB in the beginning and 58.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. * Witness Printer took 132.77 ms. Allocated memory is still 136.3 MB. Free memory was 58.7 MB in the beginning and 55.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...