./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/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_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi --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 9b373cbe6be5259af58bbd621acc4a598f97350f51d1b5f9aaeeeabd984828c1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:59:05,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:59:06,012 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-24 22:59:06,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:59:06,020 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 22:59:06,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:59:06,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:59:06,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 22:59:06,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:59:06,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:59:06,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:59:06,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:59:06,067 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:59:06,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:59:06,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:59:06,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:59:06,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:59:06,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:59:06,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:59:06,072 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 22:59:06,073 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:59:06,073 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:59:06,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:59:06,074 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:59:06,075 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:59:06,076 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:59:06,076 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:59:06,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:59:06,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:59:06,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:59:06,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:59:06,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:59:06,107 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 22:59:06,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:59:06,108 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:59:06,109 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_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b373cbe6be5259af58bbd621acc4a598f97350f51d1b5f9aaeeeabd984828c1 [2023-11-24 22:59:06,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:59:06,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:59:06,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:59:06,479 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:59:06,480 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:59:06,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2023-11-24 22:59:10,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:59:10,296 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:59:10,296 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2023-11-24 22:59:10,305 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/data/4d7e34dbc/38cca7de1c8342308a4b182fd75a8929/FLAG168601bbb [2023-11-24 22:59:10,323 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/data/4d7e34dbc/38cca7de1c8342308a4b182fd75a8929 [2023-11-24 22:59:10,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:59:10,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:59:10,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:59:10,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:59:10,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:59:10,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3cc542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10, skipping insertion in model container [2023-11-24 22:59:10,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:59:10,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:59:10,567 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:59:10,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:59:10,600 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:59:10,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10 WrapperNode [2023-11-24 22:59:10,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:59:10,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:59:10,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:59:10,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:59:10,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,646 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2023-11-24 22:59:10,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:59:10,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:59:10,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:59:10,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:59:10,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:59:10,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:59:10,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:59:10,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:59:10,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:59:10" (1/1) ... [2023-11-24 22:59:10,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:59:10,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:59:10,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:59:10,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:59:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:59:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:59:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:59:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:59:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 22:59:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 22:59:10,832 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:59:10,834 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:59:11,084 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:59:11,148 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:59:11,148 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:59:11,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:59:11 BoogieIcfgContainer [2023-11-24 22:59:11,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:59:11,151 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:59:11,152 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:59:11,161 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:59:11,162 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:59:11" (1/1) ... [2023-11-24 22:59:11,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:59:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 21 states and 27 transitions. [2023-11-24 22:59:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-11-24 22:59:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 22:59:11,240 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:11,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:11,483 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 22:59:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 23 states and 29 transitions. [2023-11-24 22:59:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-11-24 22:59:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 22:59:11,550 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:11,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:11,605 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 22:59:11,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 24 states and 30 transitions. [2023-11-24 22:59:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-11-24 22:59:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 22:59:11,651 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:11,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:11,776 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 22:59:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 25 states and 30 transitions. [2023-11-24 22:59:11,808 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-24 22:59:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 22:59:11,809 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:11,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:11,947 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 22:59:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:12,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 28 states and 37 transitions. [2023-11-24 22:59:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2023-11-24 22:59:12,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 22:59:12,076 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:12,275 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 22:59:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2023-11-24 22:59:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-11-24 22:59:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 22:59:12,411 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:12,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:12,582 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 22:59:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 34 states and 47 transitions. [2023-11-24 22:59:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2023-11-24 22:59:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 22:59:12,962 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:12,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:13,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 37 states and 50 transitions. [2023-11-24 22:59:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2023-11-24 22:59:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 22:59:13,245 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:13,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 22:59:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 37 states and 48 transitions. [2023-11-24 22:59:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2023-11-24 22:59:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 22:59:13,619 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2023-11-24 22:59:13,954 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-24 22:59:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 22:59:13,955 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:13,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:14,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 31 states and 37 transitions. [2023-11-24 22:59:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-11-24 22:59:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 22:59:14,477 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:59:14,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:59:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:59:14,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 22:59:14,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:59:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:59:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:59:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 22 states and 22 transitions. [2023-11-24 22:59:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-11-24 22:59:14,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 22:59:14,844 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 12 iterations. [2023-11-24 22:59:14,858 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-24 22:59:14,932 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-24 22:59:14,937 INFO L560 CodeCheckObserver]: Invariant with dag size 8 [2023-11-24 22:59:14,941 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-24 22:59:14,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:59:14 ImpRootNode [2023-11-24 22:59:14,942 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:59:14,943 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:59:14,943 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:59:14,943 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:59:14,944 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:59:11" (3/4) ... [2023-11-24 22:59:14,947 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:59:14,951 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-24 22:59:14,957 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-24 22:59:14,958 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-24 22:59:14,958 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 22:59:14,958 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 22:59:15,080 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 22:59:15,081 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/bin/ukojak-verify-afCqCEvfdi/witness.yml [2023-11-24 22:59:15,081 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:59:15,082 INFO L158 Benchmark]: Toolchain (without parser) took 4754.07ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 93.4MB in the beginning and 103.5MB in the end (delta: -10.1MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2023-11-24 22:59:15,083 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:59:15,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.09ms. Allocated memory is still 138.4MB. Free memory was 93.4MB in the beginning and 82.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:59:15,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.90ms. Allocated memory is still 138.4MB. Free memory was 82.8MB in the beginning and 81.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:59:15,085 INFO L158 Benchmark]: Boogie Preprocessor took 25.91ms. Allocated memory is still 138.4MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:59:15,085 INFO L158 Benchmark]: RCFGBuilder took 476.73ms. Allocated memory is still 138.4MB. Free memory was 80.1MB in the beginning and 67.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 22:59:15,086 INFO L158 Benchmark]: CodeCheck took 3790.55ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 66.6MB in the beginning and 107.6MB in the end (delta: -41.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-11-24 22:59:15,086 INFO L158 Benchmark]: Witness Printer took 138.72ms. Allocated memory is still 188.7MB. Free memory was 107.6MB in the beginning and 103.5MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:59:15,089 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, 21 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 357 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 183 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 126 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 709 IncrementalHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 57 mSDtfsCounter, 709 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 800 GetRequests, 714 SyntacticMatches, 26 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 279 SizeOfPredicates, 3 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 7/20 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: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: 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: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((counter <= 1) && (1 <= counter)) || (counter == 0)) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.09ms. Allocated memory is still 138.4MB. Free memory was 93.4MB in the beginning and 82.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.90ms. Allocated memory is still 138.4MB. Free memory was 82.8MB in the beginning and 81.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.91ms. Allocated memory is still 138.4MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.73ms. Allocated memory is still 138.4MB. Free memory was 80.1MB in the beginning and 67.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 3790.55ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 66.6MB in the beginning and 107.6MB in the end (delta: -41.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Witness Printer took 138.72ms. Allocated memory is still 188.7MB. Free memory was 107.6MB in the beginning and 103.5MB 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! [2023-11-24 22:59:15,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b2c7ac-57d0-4fad-8979-b079ac736aa3/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