./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test06.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_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/ldv-regression/test06.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/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 83c9fca06a756d42969949997a10968e5a1902b6 ..................................................................................................................................................................................................................................... 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 04:39:10,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:39:10,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:39:10,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:39:10,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:39:10,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:39:10,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:39:10,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:39:10,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:39:10,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:39:10,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:39:10,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:39:10,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:39:10,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:39:10,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:39:10,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:39:10,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:39:10,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:39:10,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:39:10,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:39:10,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:39:10,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:39:10,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:39:10,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:39:10,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:39:10,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:39:10,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:39:10,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:39:10,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:39:10,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:39:10,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:39:10,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:39:10,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:39:10,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:39:10,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:39:10,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:39:10,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:39:10,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:39:10,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:39:10,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:39:10,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:39:10,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:39:10,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:39:10,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:39:10,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:39:10,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:39:10,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:39:10,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:39:10,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:39:10,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:39:10,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:39:10,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:39:10,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:39:10,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:39:10,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:39:10,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:39:10,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:39:10,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:39:10,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:39:10,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:39:10,349 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:39:10,349 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:39:10,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:39:10,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:39:10,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:39:10,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:39:10,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:39:10,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:39:10,350 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:39:10,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:39:10,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:39:10,352 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_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c9fca06a756d42969949997a10968e5a1902b6 [2020-11-28 04:39:10,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:39:10,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:39:10,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:39:10,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:39:10,724 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:39:10,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/../../sv-benchmarks/c/ldv-regression/test06.c [2020-11-28 04:39:10,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/data/60e3d33b7/40593ce16d0c4142b376ea03c702b4da/FLAG195d0528b [2020-11-28 04:39:11,341 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:39:11,342 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/sv-benchmarks/c/ldv-regression/test06.c [2020-11-28 04:39:11,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/data/60e3d33b7/40593ce16d0c4142b376ea03c702b4da/FLAG195d0528b [2020-11-28 04:39:11,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/data/60e3d33b7/40593ce16d0c4142b376ea03c702b4da [2020-11-28 04:39:11,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:39:11,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:39:11,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:11,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:39:11,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:39:11,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:11,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b0c244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11, skipping insertion in model container [2020-11-28 04:39:11,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:11,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:39:11,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:39:11,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:11,946 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:39:11,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:11,977 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:39:11,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11 WrapperNode [2020-11-28 04:39:11,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:11,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:11,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:39:11,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:39:11,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:11,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:12,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:12,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:39:12,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:39:12,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:39:12,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:12,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:12,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:12,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:12,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:12,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:12,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... [2020-11-28 04:39:12,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:39:12,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:39:12,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:39:12,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:39:12,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/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 04:39:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 04:39:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:39:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 04:39:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:39:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:39:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:39:12,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:39:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:39:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:39:12,864 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:39:12,864 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 04:39:12,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:12 BoogieIcfgContainer [2020-11-28 04:39:12,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:39:12,871 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:39:12,872 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:39:12,882 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:39:12,883 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:12" (1/1) ... [2020-11-28 04:39:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:39:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-28 04:39:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-11-28 04:39:12,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:39:12,940 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:13,242 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:13,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:13,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:39:13,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:39:13,661 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2020-11-28 04:39:13,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:39:13 ImpRootNode [2020-11-28 04:39:13,687 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:39:13,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:39:13,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:39:13,688 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:39:13,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:12" (3/4) ... [2020-11-28 04:39:13,690 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:39:13,733 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4b4cb90c-a19f-495a-a6c4-fdc4a7e7d3c8/bin/ukojak/witness.graphml [2020-11-28 04:39:13,733 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:39:13,735 INFO L168 Benchmark]: Toolchain (without parser) took 2002.78 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 81.0 MB in the end (delta: -25.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:39:13,736 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:39:13,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.77 ms. Allocated memory is still 90.2 MB. Free memory was 55.3 MB in the beginning and 66.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:13,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 65.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:13,738 INFO L168 Benchmark]: Boogie Preprocessor took 21.84 ms. Allocated memory is still 90.2 MB. Free memory was 65.0 MB in the beginning and 63.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:39:13,739 INFO L168 Benchmark]: RCFGBuilder took 827.01 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 63.9 MB in the beginning and 84.2 MB in the end (delta: -20.3 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:13,739 INFO L168 Benchmark]: CodeCheck took 815.60 ms. Allocated memory is still 111.1 MB. Free memory was 84.2 MB in the beginning and 83.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:39:13,740 INFO L168 Benchmark]: Witness Printer took 45.70 ms. Allocated memory is still 111.1 MB. Free memory was 82.3 MB in the beginning and 81.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:39:13,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int a, b; [L24] int *p1, *p2; [L26] p1 = &a [L27] p2 = &b [L29] b = 1 [L30] a = 5 [L32] EXPR \read(a) [L32] a-- [L34] EXPR \read(a) [L14] COND TRUE a == 4 [L7] EXPR \read(**p2) [L7] int *pq = *p2; [L9] EXPR \read(**p2) [L9] *p1 = *p2 [L10] *pq = 0 [L16] return 1; [L34] a = f(a, &p1, &p2) [L36] EXPR \read(*p1) [L36] COND TRUE *p1 == 0 [L3] __assert_fail("0", "test06.c", 3, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.77 ms. Allocated memory is still 90.2 MB. Free memory was 55.3 MB in the beginning and 66.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 65.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.84 ms. Allocated memory is still 90.2 MB. Free memory was 65.0 MB in the beginning and 63.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 827.01 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 63.9 MB in the beginning and 84.2 MB in the end (delta: -20.3 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. * CodeCheck took 815.60 ms. Allocated memory is still 111.1 MB. Free memory was 84.2 MB in the beginning and 83.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 45.70 ms. Allocated memory is still 111.1 MB. Free memory was 82.3 MB in the beginning and 81.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...