./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/mod4.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_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-invariants/mod4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi --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 64b66af70d4f49939ba3192d7cc9b9b1fa8ae6dc1d14cbdfbbce4a0ddc403713 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:11:51,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:11:51,455 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-24 22:11:51,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:11:51,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 22:11:51,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:11:51,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:11:51,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 22:11:51,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:11:51,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:11:51,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:11:51,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:11:51,492 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:11:51,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:11:51,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:11:51,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:11:51,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:11:51,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:11:51,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:11:51,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:11:51,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:11:51,498 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:11:51,499 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:11:51,499 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:11:51,500 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:11:51,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:11:51,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:11:51,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:11:51,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:11:51,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:11:51,503 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 22:11:51,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:11:51,504 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:11:51,505 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_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b66af70d4f49939ba3192d7cc9b9b1fa8ae6dc1d14cbdfbbce4a0ddc403713 [2023-11-24 22:11:51,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:11:51,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:11:51,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:11:51,895 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:11:51,896 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:11:51,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/loop-invariants/mod4.c [2023-11-24 22:11:55,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:11:55,382 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:11:55,383 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/sv-benchmarks/c/loop-invariants/mod4.c [2023-11-24 22:11:55,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/data/e6b245648/40ea015d86da4dc29bfc93013ade2536/FLAG68092ee1d [2023-11-24 22:11:55,410 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/data/e6b245648/40ea015d86da4dc29bfc93013ade2536 [2023-11-24 22:11:55,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:11:55,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:11:55,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:11:55,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:11:55,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:11:55,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b81f21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55, skipping insertion in model container [2023-11-24 22:11:55,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:11:55,632 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_9607be72-c899-4572-adf5-a1a709c2b09d/sv-benchmarks/c/loop-invariants/mod4.c[580,593] [2023-11-24 22:11:55,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:11:55,666 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:11:55,680 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_9607be72-c899-4572-adf5-a1a709c2b09d/sv-benchmarks/c/loop-invariants/mod4.c[580,593] [2023-11-24 22:11:55,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:11:55,698 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:11:55,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55 WrapperNode [2023-11-24 22:11:55,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:11:55,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:11:55,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:11:55,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:11:55,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,747 INFO L138 Inliner]: procedures = 13, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2023-11-24 22:11:55,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:11:55,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:11:55,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:11:55,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:11:55,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:11:55,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:11:55,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:11:55,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:11:55,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:55" (1/1) ... [2023-11-24 22:11:55,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:11:55,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:11:55,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:11:55,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:11:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:11:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:11:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:11:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:11:55,932 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:11:55,935 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:11:56,056 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:11:56,091 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:11:56,092 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 22:11:56,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:11:56 BoogieIcfgContainer [2023-11-24 22:11:56,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:11:56,095 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:11:56,095 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:11:56,111 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:11:56,111 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:11:56" (1/1) ... [2023-11-24 22:11:56,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:11:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:11:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2023-11-24 22:11:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2023-11-24 22:11:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 22:11:56,211 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:11:56,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:11:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:11:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:11:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:11:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-24 22:11:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-24 22:11:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 22:11:56,469 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:11:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:11:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:11:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:11:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:11:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2023-11-24 22:11:56,867 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-11-24 22:11:56,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 22:11:56,868 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:11:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:11:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:11:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:11:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:11:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2023-11-24 22:11:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-11-24 22:11:57,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 22:11:57,297 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 4 iterations. [2023-11-24 22:11:57,307 INFO L751 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2023-11-24 22:11:57,339 INFO L560 CodeCheckObserver]: Invariant with dag size 10 [2023-11-24 22:11:57,346 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-24 22:11:57,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:11:57 ImpRootNode [2023-11-24 22:11:57,347 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:11:57,348 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:11:57,348 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:11:57,348 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:11:57,349 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:11:56" (3/4) ... [2023-11-24 22:11:57,351 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:11:57,359 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-24 22:11:57,360 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-24 22:11:57,360 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 22:11:57,360 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 22:11:57,361 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 22:11:57,458 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 22:11:57,458 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/witness.yml [2023-11-24 22:11:57,458 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:11:57,459 INFO L158 Benchmark]: Toolchain (without parser) took 2044.46ms. Allocated memory is still 130.0MB. Free memory was 94.2MB in the beginning and 78.7MB in the end (delta: 15.5MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-11-24 22:11:57,460 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 130.0MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:11:57,460 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.37ms. Allocated memory is still 130.0MB. Free memory was 94.2MB in the beginning and 83.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:11:57,461 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.56ms. Allocated memory is still 130.0MB. Free memory was 83.7MB in the beginning and 82.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:11:57,461 INFO L158 Benchmark]: Boogie Preprocessor took 29.73ms. Allocated memory is still 130.0MB. Free memory was 82.0MB in the beginning and 81.2MB in the end (delta: 853.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:11:57,462 INFO L158 Benchmark]: RCFGBuilder took 314.31ms. Allocated memory is still 130.0MB. Free memory was 81.2MB in the beginning and 71.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:11:57,462 INFO L158 Benchmark]: CodeCheck took 1252.18ms. Allocated memory is still 130.0MB. Free memory was 71.6MB in the beginning and 82.9MB in the end (delta: -11.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:11:57,463 INFO L158 Benchmark]: Witness Printer took 110.76ms. Allocated memory is still 130.0MB. Free memory was 82.9MB in the beginning and 78.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:11:57,469 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 29 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 62 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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: 14]: 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: 20]: Loop Invariant Derived loop invariant: (((x <= ((x / 4) * 4)) && (4 <= x)) || (x == 0)) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 130.0MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.37ms. Allocated memory is still 130.0MB. Free memory was 94.2MB in the beginning and 83.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.56ms. Allocated memory is still 130.0MB. Free memory was 83.7MB in the beginning and 82.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.73ms. Allocated memory is still 130.0MB. Free memory was 82.0MB in the beginning and 81.2MB in the end (delta: 853.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 314.31ms. Allocated memory is still 130.0MB. Free memory was 81.2MB in the beginning and 71.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 1252.18ms. Allocated memory is still 130.0MB. Free memory was 71.6MB in the beginning and 82.9MB in the end (delta: -11.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 110.76ms. Allocated memory is still 130.0MB. Free memory was 82.9MB in the beginning and 78.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-24 22:11:57,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9607be72-c899-4572-adf5-a1a709c2b09d/bin/ukojak-verify-afCqCEvfdi/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