./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/invert_string-1.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_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/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 4335483d0b28de4d854f33f949d3555a767d1bde ........................................................................................................................................................................................................................................................................................................... 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 22:25:06,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-01 22:25:06,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-01 22:25:06,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-01 22:25:06,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-01 22:25:06,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-01 22:25:06,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-01 22:25:06,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-01 22:25:06,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-01 22:25:06,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-01 22:25:06,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-01 22:25:06,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-01 22:25:06,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-01 22:25:06,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-01 22:25:06,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-01 22:25:06,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-01 22:25:06,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-01 22:25:06,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-01 22:25:06,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-01 22:25:06,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-01 22:25:06,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-01 22:25:06,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-01 22:25:06,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-01 22:25:06,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-01 22:25:06,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-01 22:25:06,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-01 22:25:06,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-01 22:25:06,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-01 22:25:06,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-01 22:25:06,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-01 22:25:06,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-01 22:25:06,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-01 22:25:06,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-01 22:25:06,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-01 22:25:06,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-01 22:25:06,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-01 22:25:06,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-01 22:25:06,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-01 22:25:06,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-01 22:25:06,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-01 22:25:06,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-01 22:25:06,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-12-01 22:25:06,777 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-01 22:25:06,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-01 22:25:06,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-01 22:25:06,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-01 22:25:06,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-01 22:25:06,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-01 22:25:06,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-01 22:25:06,779 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-01 22:25:06,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-01 22:25:06,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-01 22:25:06,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-01 22:25:06,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-01 22:25:06,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-01 22:25:06,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-01 22:25:06,780 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-01 22:25:06,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-01 22:25:06,780 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-01 22:25:06,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-01 22:25:06,780 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-01 22:25:06,780 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-01 22:25:06,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-01 22:25:06,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-01 22:25:06,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 22:25:06,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-01 22:25:06,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-01 22:25:06,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-01 22:25:06,781 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-01 22:25:06,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-01 22:25:06,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-01 22:25:06,781 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_de54d0f2-a6af-40fa-961a-fc92b9621d31/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 -> 4335483d0b28de4d854f33f949d3555a767d1bde [2019-12-01 22:25:06,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-01 22:25:06,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-01 22:25:06,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-01 22:25:06,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-01 22:25:06,908 INFO L275 PluginConnector]: CDTParser initialized [2019-12-01 22:25:06,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/../../sv-benchmarks/c/loops/invert_string-1.c [2019-12-01 22:25:06,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/data/100670593/7dc28132beec43e3a06e22adf8f7160d/FLAG415dbbd24 [2019-12-01 22:25:07,369 INFO L306 CDTParser]: Found 1 translation units. [2019-12-01 22:25:07,369 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/sv-benchmarks/c/loops/invert_string-1.c [2019-12-01 22:25:07,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/data/100670593/7dc28132beec43e3a06e22adf8f7160d/FLAG415dbbd24 [2019-12-01 22:25:07,382 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/data/100670593/7dc28132beec43e3a06e22adf8f7160d [2019-12-01 22:25:07,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-01 22:25:07,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-01 22:25:07,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-01 22:25:07,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-01 22:25:07,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-01 22:25:07,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3260b9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07, skipping insertion in model container [2019-12-01 22:25:07,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-01 22:25:07,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-01 22:25:07,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 22:25:07,555 INFO L203 MainTranslator]: Completed pre-run [2019-12-01 22:25:07,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 22:25:07,584 INFO L208 MainTranslator]: Completed translation [2019-12-01 22:25:07,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07 WrapperNode [2019-12-01 22:25:07,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-01 22:25:07,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-01 22:25:07,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-01 22:25:07,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-01 22:25:07,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-01 22:25:07,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-01 22:25:07,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-01 22:25:07,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-01 22:25:07,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-01 22:25:07,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-01 22:25:07,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-01 22:25:07,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-01 22:25:07,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:25:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/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 22:25:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-01 22:25:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-01 22:25:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-01 22:25:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-01 22:25:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-01 22:25:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-01 22:25:07,856 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-01 22:25:07,856 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-01 22:25:07,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:25:07 BoogieIcfgContainer [2019-12-01 22:25:07,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-01 22:25:07,858 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-01 22:25:07,858 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-01 22:25:07,865 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-01 22:25:07,866 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:25:07" (1/1) ... [2019-12-01 22:25:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-01 22:25:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 9 states and 12 transitions. [2019-12-01 22:25:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2019-12-01 22:25:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-01 22:25:07,898 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:25:08,016 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 22:25:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2019-12-01 22:25:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-12-01 22:25:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-01 22:25:08,061 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:25:08,098 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 22:25:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 11 states and 14 transitions. [2019-12-01 22:25:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2019-12-01 22:25:08,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-01 22:25:08,142 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:25:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 22:25:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 17 states and 27 transitions. [2019-12-01 22:25:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2019-12-01 22:25:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-01 22:25:08,993 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:25:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 22:25:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 18 states and 28 transitions. [2019-12-01 22:25:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2019-12-01 22:25:09,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-01 22:25:09,353 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:25:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 22:25:09,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 20 states and 32 transitions. [2019-12-01 22:25:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 32 transitions. [2019-12-01 22:25:09,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-01 22:25:09,837 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:25:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 22:25:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 25 states and 43 transitions. [2019-12-01 22:25:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 43 transitions. [2019-12-01 22:25:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-01 22:25:13,536 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:25:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-01 22:25:13,995 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2019-12-01 22:25:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 28 states and 49 transitions. [2019-12-01 22:25:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 49 transitions. [2019-12-01 22:25:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-01 22:25:14,441 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:25:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 22:25:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 30 states and 55 transitions. [2019-12-01 22:25:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 55 transitions. [2019-12-01 22:25:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-01 22:25:15,079 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:25:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 22:25:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:25:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 36 states and 69 transitions. [2019-12-01 22:25:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-01 22:25:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-01 22:25:18,079 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:25:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 22:25:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 22:25:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 22:25:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 22:25:18,152 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 10 iterations. [2019-12-01 22:25:18,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 10:25:18 ImpRootNode [2019-12-01 22:25:18,175 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-01 22:25:18,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-01 22:25:18,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-01 22:25:18,175 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-01 22:25:18,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:25:07" (3/4) ... [2019-12-01 22:25:18,177 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-01 22:25:18,219 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_de54d0f2-a6af-40fa-961a-fc92b9621d31/bin/ukojak/witness.graphml [2019-12-01 22:25:18,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-01 22:25:18,220 INFO L168 Benchmark]: Toolchain (without parser) took 10835.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 943.5 MB in the beginning and 990.9 MB in the end (delta: -47.4 MB). Peak memory consumption was 109.4 MB. Max. memory is 11.5 GB. [2019-12-01 22:25:18,221 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 22:25:18,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 81.8 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -133.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-01 22:25:18,222 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.88 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 22:25:18,222 INFO L168 Benchmark]: Boogie Preprocessor took 17.83 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 22:25:18,223 INFO L168 Benchmark]: RCFGBuilder took 230.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-01 22:25:18,223 INFO L168 Benchmark]: CodeCheck took 10316.96 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.0 GB in the beginning and 993.3 MB in the end (delta: 56.2 MB). Peak memory consumption was 131.2 MB. Max. memory is 11.5 GB. [2019-12-01 22:25:18,224 INFO L168 Benchmark]: Witness Printer took 44.01 ms. Allocated memory is still 1.2 GB. Free memory was 993.3 MB in the beginning and 990.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. [2019-12-01 22:25:18,227 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, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 10.2s, OverallIterations: 10, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1536 SDtfs, 680 SDslu, 0 SDs, 0 SdLazy, 11536 SolverSat, 6124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 830 GetRequests, 647 SyntacticMatches, 21 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13543 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 5388 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 8/42 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: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int MAX = __VERIFIER_nondet_uint(); [L16] char str1[MAX], str2[MAX]; [L17] int cont, i, j; [L18] cont = 0 [L20] i=0 [L20] COND TRUE i= 0 [L28] EXPR str1[0] [L28] str2[j] = str1[0] [L29] j++ [L27] i-- [L27] COND TRUE i >= 0 [L28] EXPR str1[0] [L28] str2[j] = str1[0] [L29] j++ [L27] i-- [L27] COND FALSE !(i >= 0) [L32] j = MAX-1 [L33] i=0 [L33] COND TRUE i