./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/for_infinite_loop_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/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_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/for_infinite_loop_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c17b441a3a41e59254a60cafcf3cc7598a3f304d78ae8f2384f656f9e2144d40 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 03:20:26,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 03:20:27,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-12-03 03:20:27,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 03:20:27,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 03:20:27,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 03:20:27,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 03:20:27,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 03:20:27,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 03:20:27,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 03:20:27,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 03:20:27,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 03:20:27,093 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 03:20:27,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 03:20:27,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 03:20:27,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 03:20:27,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 03:20:27,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 03:20:27,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 03:20:27,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 03:20:27,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 03:20:27,108 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 03:20:27,108 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 03:20:27,109 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 03:20:27,109 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 03:20:27,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 03:20:27,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:20:27,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 03:20:27,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 03:20:27,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 03:20:27,112 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 03:20:27,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 03:20:27,113 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 03:20:27,113 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_bde73dec-b432-41e8-bb83-2933c186ee5b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c17b441a3a41e59254a60cafcf3cc7598a3f304d78ae8f2384f656f9e2144d40 [2023-12-03 03:20:27,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 03:20:27,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 03:20:27,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 03:20:27,348 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 03:20:27,349 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 03:20:27,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/loops/for_infinite_loop_1.c [2023-12-03 03:20:30,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 03:20:30,292 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 03:20:30,293 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/sv-benchmarks/c/loops/for_infinite_loop_1.c [2023-12-03 03:20:30,299 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/data/d7df07640/f4bab4b37cc44707bf66adb129f4de5f/FLAG47e37f372 [2023-12-03 03:20:30,322 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/data/d7df07640/f4bab4b37cc44707bf66adb129f4de5f [2023-12-03 03:20:30,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 03:20:30,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 03:20:30,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 03:20:30,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 03:20:30,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 03:20:30,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c74ce10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30, skipping insertion in model container [2023-12-03 03:20:30,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,356 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 03:20:30,476 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/sv-benchmarks/c/loops/for_infinite_loop_1.c[418,431] [2023-12-03 03:20:30,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:20:30,500 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 03:20:30,513 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/sv-benchmarks/c/loops/for_infinite_loop_1.c[418,431] [2023-12-03 03:20:30,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:20:30,533 INFO L206 MainTranslator]: Completed translation [2023-12-03 03:20:30,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30 WrapperNode [2023-12-03 03:20:30,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 03:20:30,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 03:20:30,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 03:20:30,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 03:20:30,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,566 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-12-03 03:20:30,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 03:20:30,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 03:20:30,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 03:20:30,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 03:20:30,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 03:20:30,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 03:20:30,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 03:20:30,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 03:20:30,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:20:30,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 03:20:30,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 03:20:30,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 03:20:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 03:20:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 03:20:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 03:20:30,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 03:20:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-03 03:20:30,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-03 03:20:30,709 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 03:20:30,711 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 03:20:30,800 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 03:20:30,821 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 03:20:30,821 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 03:20:30,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:20:30 BoogieIcfgContainer [2023-12-03 03:20:30,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 03:20:30,824 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 03:20:30,824 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 03:20:30,835 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 03:20:30,835 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:20:30" (1/1) ... [2023-12-03 03:20:30,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 03:20:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:20:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 14 states and 17 transitions. [2023-12-03 03:20:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-12-03 03:20:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 03:20:30,917 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:20:30,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:20:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:20:31,058 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 03:20:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:20:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 13 transitions. [2023-12-03 03:20:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-12-03 03:20:31,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 03:20:31,079 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:20:31,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:20:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:20:31,213 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 03:20:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:20:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 17 states and 17 transitions. [2023-12-03 03:20:31,272 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-12-03 03:20:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-03 03:20:31,272 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:20:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:20:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:20:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 03:20:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:20:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 11 transitions. [2023-12-03 03:20:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-03 03:20:31,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-03 03:20:31,463 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 4 iterations. [2023-12-03 03:20:31,472 INFO L751 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2023-12-03 03:20:31,491 INFO L560 CodeCheckObserver]: Invariant with dag size 3 [2023-12-03 03:20:31,497 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-03 03:20:31,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 03:20:31 ImpRootNode [2023-12-03 03:20:31,498 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 03:20:31,499 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 03:20:31,499 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 03:20:31,499 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 03:20:31,500 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:20:30" (3/4) ... [2023-12-03 03:20:31,502 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-03 03:20:31,506 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-12-03 03:20:31,510 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-12-03 03:20:31,510 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-03 03:20:31,510 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-03 03:20:31,510 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-03 03:20:31,599 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-03 03:20:31,600 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/bin/ukojak-verify-Qdu7aM0XO9/witness.yml [2023-12-03 03:20:31,600 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 03:20:31,601 INFO L158 Benchmark]: Toolchain (without parser) took 1274.02ms. Allocated memory is still 169.9MB. Free memory was 142.5MB in the beginning and 109.1MB in the end (delta: 33.4MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2023-12-03 03:20:31,601 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory was 99.4MB in the beginning and 99.3MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:20:31,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.67ms. Allocated memory is still 169.9MB. Free memory was 142.0MB in the beginning and 131.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-03 03:20:31,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.54ms. Allocated memory is still 169.9MB. Free memory was 131.7MB in the beginning and 130.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 03:20:31,603 INFO L158 Benchmark]: Boogie Preprocessor took 19.37ms. Allocated memory is still 169.9MB. Free memory was 130.2MB in the beginning and 129.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:20:31,603 INFO L158 Benchmark]: RCFGBuilder took 234.99ms. Allocated memory is still 169.9MB. Free memory was 129.1MB in the beginning and 119.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-03 03:20:31,604 INFO L158 Benchmark]: CodeCheck took 674.77ms. Allocated memory is still 169.9MB. Free memory was 119.2MB in the beginning and 113.3MB in the end (delta: 5.9MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-12-03 03:20:31,604 INFO L158 Benchmark]: Witness Printer took 101.00ms. Allocated memory is still 169.9MB. Free memory was 113.3MB in the beginning and 109.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 03:20:31,607 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 71 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 55 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 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: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (x == 0) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory was 99.4MB in the beginning and 99.3MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.67ms. Allocated memory is still 169.9MB. Free memory was 142.0MB in the beginning and 131.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.54ms. Allocated memory is still 169.9MB. Free memory was 131.7MB in the beginning and 130.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.37ms. Allocated memory is still 169.9MB. Free memory was 130.2MB in the beginning and 129.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 234.99ms. Allocated memory is still 169.9MB. Free memory was 129.1MB in the beginning and 119.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 674.77ms. Allocated memory is still 169.9MB. Free memory was 119.2MB in the beginning and 113.3MB in the end (delta: 5.9MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Witness Printer took 101.00ms. Allocated memory is still 169.9MB. Free memory was 113.3MB in the beginning and 109.1MB 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! [2023-12-03 03:20:31,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde73dec-b432-41e8-bb83-2933c186ee5b/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