./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:15:53,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:15:53,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:15:53,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:15:53,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:15:53,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:15:53,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:15:53,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:15:53,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:15:53,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:15:53,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:15:53,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:15:53,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:15:53,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:15:53,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:15:53,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:15:53,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:15:53,369 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:15:53,369 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:15:53,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:15:53,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:15:53,372 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:15:53,372 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:15:53,374 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:15:53,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:15:53,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:15:53,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:15:53,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:15:53,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:15:53,411 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:15:53,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:15:53,413 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:15:53,413 INFO L153 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_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 [2023-11-23 20:15:53,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:15:53,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:15:53,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:15:53,874 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:15:53,875 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:15:53,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2023-11-23 20:15:57,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:15:57,249 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:15:57,250 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2023-11-23 20:15:57,266 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/data/fe42d6b81/f436c51eff8b4df7a6b1b625794eb761/FLAGdda74af39 [2023-11-23 20:15:57,285 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/data/fe42d6b81/f436c51eff8b4df7a6b1b625794eb761 [2023-11-23 20:15:57,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:15:57,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:15:57,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:15:57,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:15:57,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:15:57,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d538be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57, skipping insertion in model container [2023-11-23 20:15:57,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,324 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:15:57,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:15:57,564 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:15:57,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:15:57,597 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:15:57,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57 WrapperNode [2023-11-23 20:15:57,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:15:57,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:15:57,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:15:57,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:15:57,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,633 INFO L138 Inliner]: procedures = 11, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-23 20:15:57,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:15:57,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:15:57,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:15:57,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:15:57,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:15:57,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:15:57,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:15:57,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:15:57,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:57" (1/1) ... [2023-11-23 20:15:57,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:15:57,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:15:57,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:15:57,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:15:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:15:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-11-23 20:15:57,749 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-11-23 20:15:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:15:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:15:57,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:15:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:15:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:15:57,843 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:15:57,847 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:15:58,149 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:15:58,197 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:15:58,204 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:15:58,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:15:58 BoogieIcfgContainer [2023-11-23 20:15:58,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:15:58,208 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:15:58,209 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:15:58,220 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:15:58,221 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:15:58" (1/1) ... [2023-11-23 20:15:58,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:15:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 25 states and 28 transitions. [2023-11-23 20:15:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-11-23 20:15:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:15:58,323 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:58,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 31 states and 40 transitions. [2023-11-23 20:15:59,404 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-11-23 20:15:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:15:59,405 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2023-11-23 20:15:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-11-23 20:15:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:15:59,509 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:59,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:16:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:16:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 32 states and 42 transitions. [2023-11-23 20:16:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2023-11-23 20:16:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:16:00,011 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:16:00,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:16:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:16:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:16:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:16:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 37 states and 51 transitions. [2023-11-23 20:16:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2023-11-23 20:16:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:16:01,258 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:16:01,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:16:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:16:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:16:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:16:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 43 states and 61 transitions. [2023-11-23 20:16:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2023-11-23 20:16:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 20:16:02,634 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:16:02,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:16:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:16:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:16:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:16:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 45 states and 62 transitions. [2023-11-23 20:16:03,342 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2023-11-23 20:16:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:16:03,343 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:16:03,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:16:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:16:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:16:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:16:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 51 states and 70 transitions. [2023-11-23 20:16:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2023-11-23 20:16:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 20:16:04,442 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:16:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:16:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:16:04,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:16:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:16:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:16:04,585 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:16:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:16:04,660 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2023-11-23 20:16:04,693 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated [2023-11-23 20:16:04,694 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem11 could not be translated [2023-11-23 20:16:04,697 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated [2023-11-23 20:16:04,697 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post2 could not be translated [2023-11-23 20:16:04,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:16:04 ImpRootNode [2023-11-23 20:16:04,705 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:16:04,706 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:16:04,706 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:16:04,706 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:16:04,707 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:15:58" (3/4) ... [2023-11-23 20:16:04,710 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 20:16:04,724 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated [2023-11-23 20:16:04,729 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem11 could not be translated [2023-11-23 20:16:04,730 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated [2023-11-23 20:16:04,731 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post2 could not be translated [2023-11-23 20:16:04,782 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 20:16:04,782 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:16:04,783 INFO L158 Benchmark]: Toolchain (without parser) took 7493.21ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 121.2MB in the beginning and 188.5MB in the end (delta: -67.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-11-23 20:16:04,784 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:16:04,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.51ms. Allocated memory is still 167.8MB. Free memory was 121.2MB in the beginning and 111.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 20:16:04,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.34ms. Allocated memory is still 167.8MB. Free memory was 111.7MB in the beginning and 110.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:16:04,785 INFO L158 Benchmark]: Boogie Preprocessor took 25.19ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 108.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:16:04,786 INFO L158 Benchmark]: RCFGBuilder took 547.29ms. Allocated memory is still 167.8MB. Free memory was 108.6MB in the beginning and 96.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 20:16:04,786 INFO L158 Benchmark]: CodeCheck took 6497.26ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 96.0MB in the beginning and 190.6MB in the end (delta: -94.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:16:04,787 INFO L158 Benchmark]: Witness Printer took 76.93ms. Allocated memory is still 243.3MB. Free memory was 190.6MB in the beginning and 188.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:16:04,789 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 25 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 650 IncrementalHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 48 mSDtfsCounter, 650 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 649 GetRequests, 532 SyntacticMatches, 13 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3363 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 4/15 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]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int *pp = malloc(sizeof(int)); [L24] int *qq = malloc(sizeof(int)); [L26] *pp = __VERIFIER_nondet_int() [L27] *qq = __VERIFIER_nondet_int() [L28] EXPR \read(*qq) VAL [pp={-9717:0}, qq={-9716:0}] [L28] COND TRUE *qq > 1 [L29] EXPR \read(*qq) [L29] *pp = *qq [L30] *qq = -1 [L31] EXPR \read(*pp) VAL [pp={-9717:0}, qq={-9716:0}] [L31] CALL rec(pp,*pp) VAL [\old(i)=2, op={-9717:0}] [L9] COND FALSE !(i < 0) [L13] int *ip = malloc(sizeof(int)); [L14] *ip = __VERIFIER_nondet_int() [L16] EXPR i-1 VAL [\old(i)=2, i=2, ip={-9715:0}, op={-9717:0}, op={-9717:0}] [L16] CALL rec(ip,i-1) VAL [\old(i)=1, op={-9715:0}] [L9] COND FALSE !(i < 0) [L13] int *ip = malloc(sizeof(int)); [L14] *ip = __VERIFIER_nondet_int() [L16] EXPR i-1 VAL [\old(i)=1, i=1, ip={-9714:0}, op={-9715:0}, op={-9715:0}] [L16] CALL rec(ip,i-1) VAL [\old(i)=0, op={-9714:0}] [L9] COND FALSE !(i < 0) [L13] int *ip = malloc(sizeof(int)); [L14] *ip = __VERIFIER_nondet_int() [L16] EXPR i-1 VAL [\old(i)=0, i=0, ip={-9713:0}, op={-9714:0}, op={-9714:0}] [L16] CALL rec(ip,i-1) VAL [\old(i)=-1, op={-9713:0}] [L9] COND TRUE i < 0 [L10] EXPR \read(*op) [L10] (*op)-- VAL [\old(i)=-1, i=-1, op={-9713:0}, op={-9713:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.51ms. Allocated memory is still 167.8MB. Free memory was 121.2MB in the beginning and 111.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.34ms. Allocated memory is still 167.8MB. Free memory was 111.7MB in the beginning and 110.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.19ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 108.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 547.29ms. Allocated memory is still 167.8MB. Free memory was 108.6MB in the beginning and 96.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 6497.26ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 96.0MB in the beginning and 190.6MB in the end (delta: -94.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 76.93ms. Allocated memory is still 243.3MB. Free memory was 190.6MB in the beginning and 188.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post2 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post2 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-23 20:16:04,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f58158-987c-4956-85ec-5692a31d5a88/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)