./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 739715c3f9b6cd78741b6d155210624f17d4bf167a3be4c6127f06707080edde --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:50:27,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:50:28,121 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-21 18:50:28,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:50:28,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:50:28,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:50:28,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:50:28,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:50:28,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:50:28,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:50:28,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:50:28,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:50:28,185 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:50:28,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:50:28,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:50:28,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:50:28,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:50:28,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:50:28,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:50:28,190 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:50:28,191 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:50:28,192 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:50:28,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:50:28,192 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:50:28,193 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:50:28,194 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:50:28,194 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:50:28,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:50:28,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:50:28,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:50:28,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:50:28,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:50:28,199 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:50:28,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:50:28,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:50:28,200 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_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739715c3f9b6cd78741b6d155210624f17d4bf167a3be4c6127f06707080edde [2023-11-21 18:50:28,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:50:28,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:50:28,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:50:28,569 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:50:28,569 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:50:28,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/bitvector/gcd_1.c [2023-11-21 18:50:31,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:50:32,020 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:50:32,021 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/sv-benchmarks/c/bitvector/gcd_1.c [2023-11-21 18:50:32,029 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/data/c2c240688/022929b158c149a0b4961178f2bac9f3/FLAGa9d559f95 [2023-11-21 18:50:32,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/data/c2c240688/022929b158c149a0b4961178f2bac9f3 [2023-11-21 18:50:32,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:50:32,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:50:32,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:50:32,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:50:32,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:50:32,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277d165e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32, skipping insertion in model container [2023-11-21 18:50:32,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,100 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:50:32,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:50:32,341 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:50:32,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:50:32,388 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:50:32,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32 WrapperNode [2023-11-21 18:50:32,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:50:32,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:50:32,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:50:32,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:50:32,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,441 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-21 18:50:32,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:50:32,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:50:32,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:50:32,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:50:32,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,485 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:50:32,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:50:32,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:50:32,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:50:32,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:50:32,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:50:32,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:50:32,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:50:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:50:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:50:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:50:32,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:50:32,655 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:50:32,657 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:50:32,856 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:50:32,950 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:50:32,960 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 18:50:32,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:50:32 BoogieIcfgContainer [2023-11-21 18:50:32,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:50:32,964 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:50:32,964 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:50:32,974 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:50:32,975 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:50:32" (1/1) ... [2023-11-21 18:50:32,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:50:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:50:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 15 states and 18 transitions. [2023-11-21 18:50:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-11-21 18:50:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 18:50:33,058 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:50:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:50:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:50:33,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:50:33,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:50:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:50:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:50:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 14 states and 17 transitions. [2023-11-21 18:50:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-11-21 18:50:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 18:50:33,323 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:50:33,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:50:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:50:33,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:50:33,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:50:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:50:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:50:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 13 states and 16 transitions. [2023-11-21 18:50:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-11-21 18:50:33,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 18:50:33,533 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:50:33,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:50:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:50:33,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:50:33,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:50:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:50:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:50:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 12 states and 15 transitions. [2023-11-21 18:50:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2023-11-21 18:50:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:50:33,603 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:50:33,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:50:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:50:33,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:50:33,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:50:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:50:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:50:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 13 states and 17 transitions. [2023-11-21 18:50:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2023-11-21 18:50:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:50:33,767 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:50:33,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:50:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:50:33,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:50:33,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:50:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:50:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:50:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2023-11-21 18:50:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2023-11-21 18:50:33,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 18:50:33,942 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2023-11-21 18:50:33,953 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-21 18:50:33,979 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:50:33,983 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-21 18:50:33,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:50:33 ImpRootNode [2023-11-21 18:50:33,984 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:50:33,985 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:50:33,985 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:50:33,985 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:50:33,985 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:50:32" (3/4) ... [2023-11-21 18:50:33,989 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 18:50:34,000 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-21 18:50:34,000 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-21 18:50:34,000 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-21 18:50:34,001 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 18:50:34,001 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 18:50:34,114 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/witness.graphml [2023-11-21 18:50:34,115 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/witness.yml [2023-11-21 18:50:34,115 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:50:34,116 INFO L158 Benchmark]: Toolchain (without parser) took 2053.42ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 62.1MB in the end (delta: 37.5MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2023-11-21 18:50:34,116 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:50:34,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.38ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 89.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 18:50:34,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.18ms. Allocated memory is still 142.6MB. Free memory was 88.7MB in the beginning and 87.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:50:34,118 INFO L158 Benchmark]: Boogie Preprocessor took 51.01ms. Allocated memory is still 142.6MB. Free memory was 87.1MB in the beginning and 86.2MB in the end (delta: 828.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:50:34,118 INFO L158 Benchmark]: RCFGBuilder took 467.72ms. Allocated memory is still 142.6MB. Free memory was 86.2MB in the beginning and 112.4MB in the end (delta: -26.2MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-11-21 18:50:34,119 INFO L158 Benchmark]: CodeCheck took 1020.33ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 66.2MB in the end (delta: 46.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-21 18:50:34,119 INFO L158 Benchmark]: Witness Printer took 130.52ms. Allocated memory is still 142.6MB. Free memory was 66.2MB in the beginning and 62.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:50:34,122 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, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 26 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 195 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 6 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.38ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 89.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.18ms. Allocated memory is still 142.6MB. Free memory was 88.7MB in the beginning and 87.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.01ms. Allocated memory is still 142.6MB. Free memory was 87.1MB in the beginning and 86.2MB in the end (delta: 828.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 467.72ms. Allocated memory is still 142.6MB. Free memory was 86.2MB in the beginning and 112.4MB in the end (delta: -26.2MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * CodeCheck took 1020.33ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 66.2MB in the end (delta: 46.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 130.52ms. Allocated memory is still 142.6MB. Free memory was 66.2MB in the beginning and 62.1MB 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! [2023-11-21 18:50:34,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6396f7-576a-46c5-9cc5-9385df7cadc0/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE