./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e94f3026ebecc74fab5a8ed6ab8b3cbfd7d45765 ..................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-01 21:12:19,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-01 21:12:19,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-01 21:12:19,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-01 21:12:19,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-01 21:12:19,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-01 21:12:19,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-01 21:12:19,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-01 21:12:19,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-01 21:12:19,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-01 21:12:19,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-01 21:12:19,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-01 21:12:19,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-01 21:12:19,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-01 21:12:19,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-01 21:12:19,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-01 21:12:19,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-01 21:12:19,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-01 21:12:19,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-01 21:12:19,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-01 21:12:19,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-01 21:12:19,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-01 21:12:19,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-01 21:12:19,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-01 21:12:19,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-01 21:12:19,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-01 21:12:19,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-01 21:12:19,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-01 21:12:19,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-01 21:12:19,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-01 21:12:19,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-01 21:12:19,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-01 21:12:19,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-01 21:12:19,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-01 21:12:19,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-01 21:12:19,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-01 21:12:19,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-01 21:12:19,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-01 21:12:19,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-01 21:12:19,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-01 21:12:19,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-01 21:12:19,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-12-01 21:12:19,812 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-01 21:12:19,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-01 21:12:19,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-01 21:12:19,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-01 21:12:19,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-01 21:12:19,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-01 21:12:19,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-01 21:12:19,814 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-01 21:12:19,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-01 21:12:19,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-01 21:12:19,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-01 21:12:19,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-01 21:12:19,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-01 21:12:19,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-01 21:12:19,815 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-01 21:12:19,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-01 21:12:19,815 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-01 21:12:19,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-01 21:12:19,815 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-01 21:12:19,816 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-01 21:12:19,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-01 21:12:19,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-01 21:12:19,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 21:12:19,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-01 21:12:19,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-01 21:12:19,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-01 21:12:19,817 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-01 21:12:19,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-01 21:12:19,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-01 21:12:19,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3c970012-170f-4c7b-9c05-0215e092baef/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(__VERIFIER_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 -> e94f3026ebecc74fab5a8ed6ab8b3cbfd7d45765 [2019-12-01 21:12:19,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-01 21:12:19,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-01 21:12:19,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-01 21:12:19,935 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-01 21:12:19,936 INFO L275 PluginConnector]: CDTParser initialized [2019-12-01 21:12:19,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/../../sv-benchmarks/c/array-fpi/ifeqn4f.c [2019-12-01 21:12:19,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/data/42c00db36/bd8a9b2ee3894b85b702a2a7e0499745/FLAGcb4e7407e [2019-12-01 21:12:20,301 INFO L306 CDTParser]: Found 1 translation units. [2019-12-01 21:12:20,302 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/sv-benchmarks/c/array-fpi/ifeqn4f.c [2019-12-01 21:12:20,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/data/42c00db36/bd8a9b2ee3894b85b702a2a7e0499745/FLAGcb4e7407e [2019-12-01 21:12:20,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/data/42c00db36/bd8a9b2ee3894b85b702a2a7e0499745 [2019-12-01 21:12:20,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-01 21:12:20,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-01 21:12:20,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-01 21:12:20,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-01 21:12:20,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-01 21:12:20,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165689ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20, skipping insertion in model container [2019-12-01 21:12:20,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-01 21:12:20,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-01 21:12:20,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 21:12:20,496 INFO L203 MainTranslator]: Completed pre-run [2019-12-01 21:12:20,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 21:12:20,521 INFO L208 MainTranslator]: Completed translation [2019-12-01 21:12:20,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20 WrapperNode [2019-12-01 21:12:20,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-01 21:12:20,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-01 21:12:20,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-01 21:12:20,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-01 21:12:20,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-01 21:12:20,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-01 21:12:20,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-01 21:12:20,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-01 21:12:20,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-01 21:12:20,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-01 21:12:20,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-01 21:12:20,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-01 21:12:20,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:12:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/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 [2019-12-01 21:12:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-01 21:12:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-01 21:12:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-01 21:12:20,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-01 21:12:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-01 21:12:20,840 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-01 21:12:20,840 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-01 21:12:20,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:12:20 BoogieIcfgContainer [2019-12-01 21:12:20,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-01 21:12:20,842 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-01 21:12:20,842 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-01 21:12:20,850 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-01 21:12:20,850 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:12:20" (1/1) ... [2019-12-01 21:12:20,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-01 21:12:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 21:12:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 11 states and 15 transitions. [2019-12-01 21:12:20,879 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2019-12-01 21:12:20,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-01 21:12:20,881 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 21:12:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 21:12:20,961 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-01 21:12:20,964 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-01 21:12:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 21:12:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 21:12:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 12 states and 16 transitions. [2019-12-01 21:12:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2019-12-01 21:12:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-01 21:12:21,021 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 21:12:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 21:12:21,049 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-01 21:12:21,050 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-01 21:12:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-01 21:12:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 21:12:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 13 states and 18 transitions. [2019-12-01 21:12:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2019-12-01 21:12:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-01 21:12:21,114 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 21:12:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 21:12:21,148 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-01 21:12:21,149 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-01 21:12:21,187 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-01 21:12:21,188 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-01 21:12:21,191 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-01 21:12:21,191 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-01 21:12:21,192 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-12-01 21:12:21,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-01 21:12:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-01 21:12:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 21:12:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 15 states and 22 transitions. [2019-12-01 21:12:21,407 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 22 transitions. [2019-12-01 21:12:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-01 21:12:21,407 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 21:12:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 21:12:21,430 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-01 21:12:21,431 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-01 21:12:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-01 21:12:22,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 21:12:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 22 states and 34 transitions. [2019-12-01 21:12:22,065 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2019-12-01 21:12:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-01 21:12:22,066 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 21:12:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 21:12:22,088 INFO L264 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-01 21:12:22,089 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-01 21:12:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-01 21:12:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 21:12:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 23 states and 33 transitions. [2019-12-01 21:12:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2019-12-01 21:12:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-01 21:12:22,420 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 21:12:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 21:12:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 21:12:22,477 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2019-12-01 21:12:22,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 09:12:22 ImpRootNode [2019-12-01 21:12:22,504 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-01 21:12:22,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-01 21:12:22,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-01 21:12:22,504 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-01 21:12:22,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:12:20" (3/4) ... [2019-12-01 21:12:22,506 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-01 21:12:22,548 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3c970012-170f-4c7b-9c05-0215e092baef/bin/ukojak/witness.graphml [2019-12-01 21:12:22,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-01 21:12:22,550 INFO L168 Benchmark]: Toolchain (without parser) took 2232.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 943.3 MB in the beginning and 981.8 MB in the end (delta: -38.5 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. [2019-12-01 21:12:22,550 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 21:12:22,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -145.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-01 21:12:22,551 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 21:12:22,552 INFO L168 Benchmark]: Boogie Preprocessor took 18.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-01 21:12:22,552 INFO L168 Benchmark]: RCFGBuilder took 267.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-12-01 21:12:22,553 INFO L168 Benchmark]: CodeCheck took 1662.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 988.7 MB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. [2019-12-01 21:12:22,553 INFO L168 Benchmark]: Witness Printer took 44.84 ms. Allocated memory is still 1.1 GB. Free memory was 988.7 MB in the beginning and 981.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-01 21:12:22,558 INFO L335 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, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 56 SDslu, 0 SDs, 0 SdLazy, 664 SolverSat, 316 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 452 GetRequests, 376 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1248 SizeOfPredicates, 13 NumberOfNonLiveVariables, 312 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 8/13 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: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long *a = malloc(sizeof(long long)*N); [L24] long long *b = malloc(sizeof(long long)*N); [L26] i=0 VAL [N=2] [L26] COND TRUE i