./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/mutual_simple2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/mutual_simple2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2 --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 b69d1be7eda006c1c689f3f3f9bbb5e6181bea96390d4e74f3b51d245324fff1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:44:24,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:44:24,571 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:44:24,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:44:24,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:44:24,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:44:24,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:44:24,605 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:44:24,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:44:24,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:44:24,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:44:24,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:44:24,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:44:24,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:44:24,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:44:24,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:44:24,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:44:24,612 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:44:24,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:44:24,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:44:24,614 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:44:24,614 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:44:24,615 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:44:24,616 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:44:24,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:44:24,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:44:24,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:44:24,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:44:24,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:44:24,619 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:44:24,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:44:24,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:44:24,620 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_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b69d1be7eda006c1c689f3f3f9bbb5e6181bea96390d4e74f3b51d245324fff1 [2023-11-21 18:44:24,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:44:24,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:44:24,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:44:24,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:44:24,964 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:44:24,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/termination-recursive-malloc/mutual_simple2.i [2023-11-21 18:44:28,051 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:44:28,314 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:44:28,315 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/sv-benchmarks/c/termination-recursive-malloc/mutual_simple2.i [2023-11-21 18:44:28,325 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/data/db2f60a8d/6fc83599640e4d1395e647b2a0a7c5d1/FLAG347b5dbbf [2023-11-21 18:44:28,347 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/data/db2f60a8d/6fc83599640e4d1395e647b2a0a7c5d1 [2023-11-21 18:44:28,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:44:28,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:44:28,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:44:28,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:44:28,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:44:28,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@172b814f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28, skipping insertion in model container [2023-11-21 18:44:28,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,397 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:44:28,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:44:28,556 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:44:28,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:44:28,586 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:44:28,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28 WrapperNode [2023-11-21 18:44:28,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:44:28,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:44:28,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:44:28,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:44:28,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,636 INFO L138 Inliner]: procedures = 12, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2023-11-21 18:44:28,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:44:28,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:44:28,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:44:28,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:44:28,649 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:44:28,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:44:28,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:44:28,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:44:28,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:28" (1/1) ... [2023-11-21 18:44:28,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:44:28,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:44:28,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:44:28,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:44:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 18:44:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 18:44:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-21 18:44:28,772 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-21 18:44:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-11-21 18:44:28,772 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-11-21 18:44:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:44:28,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:44:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:44:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:44:28,886 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:44:28,888 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:44:29,035 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:44:29,061 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:44:29,062 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:44:29,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:44:29 BoogieIcfgContainer [2023-11-21 18:44:29,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:44:29,065 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:44:29,065 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:44:29,077 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:44:29,077 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:44:29" (1/1) ... [2023-11-21 18:44:29,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:44:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:44:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2023-11-21 18:44:29,149 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-21 18:44:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 18:44:29,154 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:44:29,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:44:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:44:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:44:29,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:44:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 17 states and 19 transitions. [2023-11-21 18:44:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-21 18:44:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:44:29,534 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:44:29,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:44:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:44:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:44:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:44:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 24 transitions. [2023-11-21 18:44:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-11-21 18:44:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 18:44:30,253 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:44:30,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:44:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:44:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:44:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:44:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 16 states and 18 transitions. [2023-11-21 18:44:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-21 18:44:31,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 18:44:31,233 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 4 iterations. [2023-11-21 18:44:31,245 INFO L751 CodeCheckObserver]: All specifications hold 2 specifications checked. All of them hold [2023-11-21 18:44:31,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:44:31 ImpRootNode [2023-11-21 18:44:31,291 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:44:31,292 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:44:31,292 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:44:31,292 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:44:31,293 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:44:29" (3/4) ... [2023-11-21 18:44:31,298 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 18:44:31,305 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2023-11-21 18:44:31,305 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2023-11-21 18:44:31,313 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-21 18:44:31,313 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-21 18:44:31,314 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-21 18:44:31,314 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 18:44:31,432 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/witness.graphml [2023-11-21 18:44:31,433 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/witness.yml [2023-11-21 18:44:31,433 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:44:31,434 INFO L158 Benchmark]: Toolchain (without parser) took 3080.22ms. Allocated memory is still 205.5MB. Free memory was 165.6MB in the beginning and 110.5MB in the end (delta: 55.1MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2023-11-21 18:44:31,434 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 151.0MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:44:31,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.64ms. Allocated memory is still 205.5MB. Free memory was 165.6MB in the beginning and 155.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 18:44:31,435 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.88ms. Allocated memory is still 205.5MB. Free memory was 155.1MB in the beginning and 154.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:44:31,436 INFO L158 Benchmark]: Boogie Preprocessor took 50.98ms. Allocated memory is still 205.5MB. Free memory was 154.0MB in the beginning and 153.0MB in the end (delta: 955.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:44:31,436 INFO L158 Benchmark]: RCFGBuilder took 375.14ms. Allocated memory is still 205.5MB. Free memory was 153.0MB in the beginning and 139.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 18:44:31,437 INFO L158 Benchmark]: CodeCheck took 2226.06ms. Allocated memory is still 205.5MB. Free memory was 139.5MB in the beginning and 115.8MB in the end (delta: 23.7MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2023-11-21 18:44:31,437 INFO L158 Benchmark]: Witness Printer took 141.50ms. Allocated memory is still 205.5MB. Free memory was 115.8MB in the beginning and 110.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:44:31,440 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 3 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 30 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 163 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 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 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 151.0MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.64ms. Allocated memory is still 205.5MB. Free memory was 165.6MB in the beginning and 155.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.88ms. Allocated memory is still 205.5MB. Free memory was 155.1MB in the beginning and 154.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.98ms. Allocated memory is still 205.5MB. Free memory was 154.0MB in the beginning and 153.0MB in the end (delta: 955.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 375.14ms. Allocated memory is still 205.5MB. Free memory was 153.0MB in the beginning and 139.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 2226.06ms. Allocated memory is still 205.5MB. Free memory was 139.5MB in the beginning and 115.8MB in the end (delta: 23.7MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Witness Printer took 141.50ms. Allocated memory is still 205.5MB. Free memory was 115.8MB in the beginning and 110.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-21 18:44:31,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddcf22d3-0d35-4164-a910-0b24a3cd2df6/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE