./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 02:19:44,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 02:19:44,298 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-12-03 02:19:44,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 02:19:44,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 02:19:44,327 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 02:19:44,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 02:19:44,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 02:19:44,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 02:19:44,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 02:19:44,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 02:19:44,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 02:19:44,331 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 02:19:44,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 02:19:44,332 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 02:19:44,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 02:19:44,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 02:19:44,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 02:19:44,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 02:19:44,335 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-03 02:19:44,335 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 02:19:44,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 02:19:44,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 02:19:44,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 02:19:44,340 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 02:19:44,340 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 02:19:44,340 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 02:19:44,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 02:19:44,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:19:44,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 02:19:44,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 02:19:44,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 02:19:44,343 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 02:19:44,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 02:19:44,343 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 02:19:44,343 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_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 [2023-12-03 02:19:44,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 02:19:44,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 02:19:44,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 02:19:44,575 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 02:19:44,576 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 02:19:44,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2023-12-03 02:19:47,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 02:19:47,610 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 02:19:47,611 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2023-12-03 02:19:47,624 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/data/08e2f1d51/c280d5c9844f488a8cd1626720020152/FLAG8ce5c29d9 [2023-12-03 02:19:47,636 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/data/08e2f1d51/c280d5c9844f488a8cd1626720020152 [2023-12-03 02:19:47,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 02:19:47,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 02:19:47,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 02:19:47,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 02:19:47,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 02:19:47,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:19:47" (1/1) ... [2023-12-03 02:19:47,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581b147a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:47, skipping insertion in model container [2023-12-03 02:19:47,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:19:47" (1/1) ... [2023-12-03 02:19:47,693 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 02:19:48,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:19:48,026 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 02:19:48,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:19:48,114 INFO L206 MainTranslator]: Completed translation [2023-12-03 02:19:48,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48 WrapperNode [2023-12-03 02:19:48,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 02:19:48,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 02:19:48,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 02:19:48,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 02:19:48,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,175 INFO L138 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 113 [2023-12-03 02:19:48,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 02:19:48,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 02:19:48,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 02:19:48,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 02:19:48,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 02:19:48,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 02:19:48,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 02:19:48,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 02:19:48,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:19:48,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 02:19:48,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 02:19:48,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 02:19:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-03 02:19:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-12-03 02:19:48,302 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-12-03 02:19:48,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-03 02:19:48,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 02:19:48,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-03 02:19:48,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-03 02:19:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-03 02:19:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-03 02:19:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-03 02:19:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 02:19:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 02:19:48,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 02:19:48,427 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 02:19:48,429 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 02:19:48,608 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 02:19:48,708 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 02:19:48,708 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-03 02:19:48,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:19:48 BoogieIcfgContainer [2023-12-03 02:19:48,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 02:19:48,711 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 02:19:48,711 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 02:19:48,721 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 02:19:48,721 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:19:48" (1/1) ... [2023-12-03 02:19:48,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 02:19:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2023-12-03 02:19:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-12-03 02:19:48,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-03 02:19:48,801 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:48,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:19:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 21 states and 25 transitions. [2023-12-03 02:19:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-03 02:19:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-03 02:19:49,214 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:49,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-03 02:19:49,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 24 states and 29 transitions. [2023-12-03 02:19:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-12-03 02:19:49,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-03 02:19:49,402 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:49,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-03 02:19:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 25 states and 30 transitions. [2023-12-03 02:19:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-12-03 02:19:49,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-03 02:19:49,529 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:49,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-03 02:19:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 27 states and 34 transitions. [2023-12-03 02:19:49,792 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2023-12-03 02:19:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-03 02:19:49,793 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:49,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-03 02:19:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 28 states and 35 transitions. [2023-12-03 02:19:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2023-12-03 02:19:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-03 02:19:49,952 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:49,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-03 02:19:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 39 transitions. [2023-12-03 02:19:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-12-03 02:19:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-03 02:19:50,353 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:50,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-03 02:19:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 24 states and 30 transitions. [2023-12-03 02:19:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-03 02:19:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-03 02:19:50,577 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:50,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-03 02:19:51,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 27 states and 34 transitions. [2023-12-03 02:19:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2023-12-03 02:19:51,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-03 02:19:51,020 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:51,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-03 02:19:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 24 states and 28 transitions. [2023-12-03 02:19:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-12-03 02:19:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-03 02:19:51,328 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:19:51,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:19:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:19:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-03 02:19:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:19:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 21 states and 22 transitions. [2023-12-03 02:19:52,753 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-12-03 02:19:52,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-03 02:19:52,753 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 11 iterations. [2023-12-03 02:19:52,761 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-12-03 02:19:52,854 INFO L560 CodeCheckObserver]: Invariant with dag size 6 [2023-12-03 02:19:52,860 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-03 02:19:52,860 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-03 02:19:52,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 02:19:52 ImpRootNode [2023-12-03 02:19:52,861 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 02:19:52,861 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 02:19:52,861 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 02:19:52,862 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 02:19:52,862 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:19:48" (3/4) ... [2023-12-03 02:19:52,864 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-03 02:19:52,867 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2023-12-03 02:19:52,872 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-12-03 02:19:52,872 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-12-03 02:19:52,872 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-03 02:19:52,873 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-03 02:19:52,959 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-03 02:19:52,960 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/witness.yml [2023-12-03 02:19:52,960 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 02:19:52,961 INFO L158 Benchmark]: Toolchain (without parser) took 5320.90ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 101.2MB in the beginning and 65.7MB in the end (delta: 35.5MB). Peak memory consumption was 102.4MB. Max. memory is 16.1GB. [2023-12-03 02:19:52,961 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:19:52,962 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.18ms. Allocated memory is still 142.6MB. Free memory was 100.7MB in the beginning and 83.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-03 02:19:52,962 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.62ms. Allocated memory is still 142.6MB. Free memory was 83.4MB in the beginning and 81.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 02:19:52,963 INFO L158 Benchmark]: Boogie Preprocessor took 41.01ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 79.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 02:19:52,963 INFO L158 Benchmark]: RCFGBuilder took 492.25ms. Allocated memory is still 142.6MB. Free memory was 79.7MB in the beginning and 55.4MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-03 02:19:52,963 INFO L158 Benchmark]: CodeCheck took 4149.78ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 55.4MB in the beginning and 70.9MB in the end (delta: -15.5MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2023-12-03 02:19:52,964 INFO L158 Benchmark]: Witness Printer took 98.75ms. Allocated memory is still 207.6MB. Free memory was 70.9MB in the beginning and 65.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 02:19:52,966 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, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 368 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 178 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 587 IncrementalHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 178 mSolverCounterUnsat, 170 mSDtfsCounter, 587 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1208 GetRequests, 1132 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 49/64 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: 595]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 595]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 618]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 618]: 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: 618]: Loop Invariant Derived loop invariant: ((i == 0) || (1 <= i)) - InvariantResult [Line: 588]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.18ms. Allocated memory is still 142.6MB. Free memory was 100.7MB in the beginning and 83.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.62ms. Allocated memory is still 142.6MB. Free memory was 83.4MB in the beginning and 81.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.01ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 79.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 492.25ms. Allocated memory is still 142.6MB. Free memory was 79.7MB in the beginning and 55.4MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 4149.78ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 55.4MB in the beginning and 70.9MB in the end (delta: -15.5MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. * Witness Printer took 98.75ms. Allocated memory is still 207.6MB. Free memory was 70.9MB in the beginning and 65.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-12-03 02:19:52,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee102270-3c5d-4ec2-9e56-fedc77350eea/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE