./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL --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 d483d112ebc631f1c14642e780c42909cf25d334478fdf38ba7f61b34b8ee811 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:08:26,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:08:26,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 03:08:26,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:08:26,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:08:26,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:08:26,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:08:26,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:08:26,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:08:26,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:08:26,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:08:26,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:08:26,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:08:26,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:08:26,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:08:26,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:08:26,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:08:26,514 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:08:26,515 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:08:26,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:08:26,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:08:26,517 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:08:26,517 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:08:26,518 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:08:26,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:08:26,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:08:26,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:08:26,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:08:26,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:08:26,521 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:08:26,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:08:26,522 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:08:26,522 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_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d483d112ebc631f1c14642e780c42909cf25d334478fdf38ba7f61b34b8ee811 [2023-11-19 03:08:26,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:08:26,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:08:26,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:08:26,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:08:26,867 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:08:26,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2023-11-19 03:08:30,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:08:30,362 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:08:30,363 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2023-11-19 03:08:30,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/data/01fdb3940/bd823a63a4174a0dabd6a659abc0ddb2/FLAG7bf2413b0 [2023-11-19 03:08:30,391 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/data/01fdb3940/bd823a63a4174a0dabd6a659abc0ddb2 [2023-11-19 03:08:30,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:08:30,402 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:08:30,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:08:30,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:08:30,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:08:30,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371b4cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30, skipping insertion in model container [2023-11-19 03:08:30,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:08:30,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:08:30,589 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:08:30,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:08:30,619 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:08:30,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30 WrapperNode [2023-11-19 03:08:30,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:08:30,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:08:30,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:08:30,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:08:30,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,643 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2023-11-19 03:08:30,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:08:30,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:08:30,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:08:30,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:08:30,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,661 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:08:30,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:08:30,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:08:30,664 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:08:30,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:30" (1/1) ... [2023-11-19 03:08:30,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:08:30,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:08:30,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:08:30,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:08:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:08:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:08:30,833 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:08:30,836 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:08:30,965 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:08:30,997 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:08:31,001 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 03:08:31,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:31 BoogieIcfgContainer [2023-11-19 03:08:31,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:08:31,015 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:08:31,016 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:08:31,027 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:08:31,027 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:31" (1/1) ... [2023-11-19 03:08:31,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:08:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:08:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2023-11-19 03:08:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-19 03:08:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 03:08:31,114 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:08:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:08:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:08:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:08:31,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:08:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 13 states and 18 transitions. [2023-11-19 03:08:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2023-11-19 03:08:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 03:08:31,330 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:08:31,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:08:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:08:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:08:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:08:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2023-11-19 03:08:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2023-11-19 03:08:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:08:31,824 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:08:31,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:08:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:08:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:08:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:08:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 27 transitions. [2023-11-19 03:08:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2023-11-19 03:08:32,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 03:08:32,176 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:08:32,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:08:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:08:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:08:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:08:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 15 states and 20 transitions. [2023-11-19 03:08:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2023-11-19 03:08:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:08:32,362 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:08:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:08:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:08:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:08:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:08:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 8 states and 10 transitions. [2023-11-19 03:08:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-11-19 03:08:32,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 03:08:32,935 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2023-11-19 03:08:32,948 INFO L751 CodeCheckObserver]: All specifications hold 2 specifications checked. All of them hold [2023-11-19 03:08:32,985 INFO L560 CodeCheckObserver]: Invariant with dag size 9 [2023-11-19 03:08:32,994 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-19 03:08:32,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:08:32 ImpRootNode [2023-11-19 03:08:32,994 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:08:32,995 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:08:32,995 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:08:32,995 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:08:32,996 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:31" (3/4) ... [2023-11-19 03:08:33,000 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 03:08:33,009 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-19 03:08:33,009 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 03:08:33,010 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 03:08:33,091 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 03:08:33,091 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/witness.yml [2023-11-19 03:08:33,092 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:08:33,093 INFO L158 Benchmark]: Toolchain (without parser) took 2690.88ms. Allocated memory was 167.8MB in the beginning and 216.0MB in the end (delta: 48.2MB). Free memory was 134.3MB in the beginning and 140.9MB in the end (delta: -6.6MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2023-11-19 03:08:33,093 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 167.8MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:08:33,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.83ms. Allocated memory is still 167.8MB. Free memory was 134.3MB in the beginning and 124.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 03:08:33,094 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.89ms. Allocated memory is still 167.8MB. Free memory was 124.7MB in the beginning and 123.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:08:33,095 INFO L158 Benchmark]: Boogie Preprocessor took 18.84ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 122.7MB in the end (delta: 753.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:08:33,095 INFO L158 Benchmark]: RCFGBuilder took 349.75ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 113.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 03:08:33,096 INFO L158 Benchmark]: CodeCheck took 1979.56ms. Allocated memory was 167.8MB in the beginning and 216.0MB in the end (delta: 48.2MB). Free memory was 113.0MB in the beginning and 145.1MB in the end (delta: -32.2MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-11-19 03:08:33,096 INFO L158 Benchmark]: Witness Printer took 96.70ms. Allocated memory is still 216.0MB. Free memory was 145.1MB in the beginning and 140.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:08:33,099 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 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 306 IncrementalHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 20 mSDtfsCounter, 306 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 352 GetRequests, 296 SyntacticMatches, 12 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 5/9 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((0 <= (x + 2147483648)) && (M <= 2147483647)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 167.8MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.83ms. Allocated memory is still 167.8MB. Free memory was 134.3MB in the beginning and 124.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.89ms. Allocated memory is still 167.8MB. Free memory was 124.7MB in the beginning and 123.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.84ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 122.7MB in the end (delta: 753.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 349.75ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 113.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 1979.56ms. Allocated memory was 167.8MB in the beginning and 216.0MB in the end (delta: 48.2MB). Free memory was 113.0MB in the beginning and 145.1MB in the end (delta: -32.2MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Witness Printer took 96.70ms. Allocated memory is still 216.0MB. Free memory was 145.1MB in the beginning and 140.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-19 03:08:33,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e7699-6cd6-43c1-856a-775e1d43f7b3/bin/ukojak-verify-G8NBE6pJGL/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 Result: TRUE