./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9 --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 fc6cfc9bc139db752e72885619d5342f9725bf67cec8b7ca9da9022c75c17b44 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 02:53:07,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 02:53:07,087 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-12-03 02:53:07,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 02:53:07,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 02:53:07,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 02:53:07,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 02:53:07,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 02:53:07,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 02:53:07,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 02:53:07,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 02:53:07,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 02:53:07,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 02:53:07,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 02:53:07,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 02:53:07,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 02:53:07,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 02:53:07,136 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-03 02:53:07,136 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 02:53:07,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 02:53:07,137 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 02:53:07,137 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 02:53:07,138 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 02:53:07,138 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 02:53:07,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 02:53:07,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:53:07,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 02:53:07,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 02:53:07,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 02:53:07,140 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 02:53:07,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 02:53:07,141 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 02:53:07,141 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_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc6cfc9bc139db752e72885619d5342f9725bf67cec8b7ca9da9022c75c17b44 [2023-12-03 02:53:07,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 02:53:07,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 02:53:07,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 02:53:07,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 02:53:07,427 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 02:53:07,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2023-12-03 02:53:10,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 02:53:10,269 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 02:53:10,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2023-12-03 02:53:10,276 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/data/75d01cbb2/69dbd9c55a674b5a921c7e8451eef9b3/FLAG60be541fb [2023-12-03 02:53:10,290 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/data/75d01cbb2/69dbd9c55a674b5a921c7e8451eef9b3 [2023-12-03 02:53:10,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 02:53:10,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 02:53:10,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 02:53:10,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 02:53:10,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 02:53:10,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e86160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10, skipping insertion in model container [2023-12-03 02:53:10,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,316 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 02:53:10,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:53:10,445 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 02:53:10,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:53:10,471 INFO L206 MainTranslator]: Completed translation [2023-12-03 02:53:10,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10 WrapperNode [2023-12-03 02:53:10,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 02:53:10,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 02:53:10,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 02:53:10,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 02:53:10,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,502 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2023-12-03 02:53:10,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 02:53:10,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 02:53:10,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 02:53:10,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 02:53:10,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 02:53:10,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 02:53:10,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 02:53:10,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 02:53:10,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:53:10,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 02:53:10,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 02:53:10,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 02:53:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-12-03 02:53:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-12-03 02:53:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 02:53:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 02:53:10,639 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 02:53:10,640 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 02:53:10,754 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 02:53:10,770 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 02:53:10,770 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-03 02:53:10,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:53:10 BoogieIcfgContainer [2023-12-03 02:53:10,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 02:53:10,773 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 02:53:10,773 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 02:53:10,793 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 02:53:10,794 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:53:10" (1/1) ... [2023-12-03 02:53:10,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 02:53:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 27 states and 29 transitions. [2023-12-03 02:53:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2023-12-03 02:53:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 02:53:10,875 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 26 states and 28 transitions. [2023-12-03 02:53:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-12-03 02:53:11,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 02:53:11,037 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 25 states and 27 transitions. [2023-12-03 02:53:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-12-03 02:53:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-03 02:53:11,119 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:11,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2023-12-03 02:53:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-12-03 02:53:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-03 02:53:11,305 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:11,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:11,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 32 states and 40 transitions. [2023-12-03 02:53:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-12-03 02:53:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-03 02:53:11,648 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:11,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 34 states and 42 transitions. [2023-12-03 02:53:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-12-03 02:53:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-03 02:53:11,724 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:11,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 33 states and 41 transitions. [2023-12-03 02:53:11,846 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-03 02:53:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-03 02:53:11,847 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:11,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 36 states and 46 transitions. [2023-12-03 02:53:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2023-12-03 02:53:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-03 02:53:12,265 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:12,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 40 states and 52 transitions. [2023-12-03 02:53:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2023-12-03 02:53:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-03 02:53:12,738 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:12,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:13,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 49 states and 67 transitions. [2023-12-03 02:53:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2023-12-03 02:53:13,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-03 02:53:13,676 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:13,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:53:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 58 states and 82 transitions. [2023-12-03 02:53:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 82 transitions. [2023-12-03 02:53:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-03 02:53:14,671 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:14,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 02:53:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 62 states and 89 transitions. [2023-12-03 02:53:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 89 transitions. [2023-12-03 02:53:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-03 02:53:15,288 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:53:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:53:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:53:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 02:53:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:53:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 41 states and 55 transitions. [2023-12-03 02:53:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2023-12-03 02:53:15,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-03 02:53:15,884 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 13 iterations. [2023-12-03 02:53:15,892 INFO L751 CodeCheckObserver]: All specifications hold 8 specifications checked. All of them hold [2023-12-03 02:53:16,193 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-03 02:53:16,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 02:53:16 ImpRootNode [2023-12-03 02:53:16,198 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 02:53:16,198 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 02:53:16,198 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 02:53:16,199 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 02:53:16,199 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:53:10" (3/4) ... [2023-12-03 02:53:16,201 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-03 02:53:16,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec [2023-12-03 02:53:16,208 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-12-03 02:53:16,208 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-03 02:53:16,208 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-03 02:53:16,274 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-03 02:53:16,275 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/witness.yml [2023-12-03 02:53:16,275 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 02:53:16,275 INFO L158 Benchmark]: Toolchain (without parser) took 5982.02ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 136.7MB in the beginning and 97.0MB in the end (delta: 39.6MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. [2023-12-03 02:53:16,276 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:53:16,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.06ms. Allocated memory is still 172.0MB. Free memory was 136.7MB in the beginning and 127.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-03 02:53:16,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.44ms. Allocated memory is still 172.0MB. Free memory was 127.3MB in the beginning and 125.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 02:53:16,277 INFO L158 Benchmark]: Boogie Preprocessor took 16.17ms. Allocated memory is still 172.0MB. Free memory was 125.7MB in the beginning and 125.0MB in the end (delta: 667.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:53:16,277 INFO L158 Benchmark]: RCFGBuilder took 252.06ms. Allocated memory is still 172.0MB. Free memory was 125.0MB in the beginning and 115.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-03 02:53:16,278 INFO L158 Benchmark]: CodeCheck took 5424.93ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 114.7MB in the beginning and 101.1MB in the end (delta: 13.6MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2023-12-03 02:53:16,278 INFO L158 Benchmark]: Witness Printer took 76.55ms. Allocated memory is still 207.6MB. Free memory was 101.1MB in the beginning and 97.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 02:53:16,281 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, 27 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 13, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 482 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 422 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 260 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1474 IncrementalHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 260 mSolverCounterUnsat, 40 mSDtfsCounter, 1474 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1247 GetRequests, 1084 SyntacticMatches, 27 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8349 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 29/39 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: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.06ms. Allocated memory is still 172.0MB. Free memory was 136.7MB in the beginning and 127.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.44ms. Allocated memory is still 172.0MB. Free memory was 127.3MB in the beginning and 125.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.17ms. Allocated memory is still 172.0MB. Free memory was 125.7MB in the beginning and 125.0MB in the end (delta: 667.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 252.06ms. Allocated memory is still 172.0MB. Free memory was 125.0MB in the beginning and 115.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 5424.93ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 114.7MB in the beginning and 101.1MB in the end (delta: 13.6MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. * Witness Printer took 76.55ms. Allocated memory is still 207.6MB. Free memory was 101.1MB in the beginning and 97.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-12-03 02:53:16,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30224c26-144e-43ac-861d-f55100a3e1c4/bin/ukojak-verify-Qdu7aM0XO9/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