./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm --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 a135e953d64ed0fec81eb2a1e42f4031e3e387fc71d5a5cd2177772a202dc706 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 22:03:17,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 22:03:17,306 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-13 22:03:17,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 22:03:17,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 22:03:17,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 22:03:17,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 22:03:17,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 22:03:17,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 22:03:17,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 22:03:17,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 22:03:17,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 22:03:17,363 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 22:03:17,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 22:03:17,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 22:03:17,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 22:03:17,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 22:03:17,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 22:03:17,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 22:03:17,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 22:03:17,364 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 22:03:17,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 22:03:17,364 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 22:03:17,365 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 22:03:17,365 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 22:03:17,365 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 22:03:17,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 22:03:17,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:03:17,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 22:03:17,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 22:03:17,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 22:03:17,366 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 22:03:17,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 22:03:17,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm 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 -> a135e953d64ed0fec81eb2a1e42f4031e3e387fc71d5a5cd2177772a202dc706 [2024-11-13 22:03:17,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 22:03:17,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 22:03:17,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 22:03:17,776 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 22:03:17,777 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 22:03:17,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/list-properties/list-2.i Unable to find full path for "g++" [2024-11-13 22:03:19,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 22:03:20,133 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 22:03:20,133 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/sv-benchmarks/c/list-properties/list-2.i [2024-11-13 22:03:20,148 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/data/d4f7b7280/ff137b2b2809451390fa00761a8f9f35/FLAGbf6492e92 [2024-11-13 22:03:20,176 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/data/d4f7b7280/ff137b2b2809451390fa00761a8f9f35 [2024-11-13 22:03:20,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 22:03:20,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 22:03:20,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 22:03:20,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 22:03:20,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 22:03:20,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3454f603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20, skipping insertion in model container [2024-11-13 22:03:20,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 22:03:20,545 WARN L250 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_a9f1af20-6c94-4863-a7fc-530b53ff1b43/sv-benchmarks/c/list-properties/list-2.i[23408,23421] [2024-11-13 22:03:20,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:03:20,559 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 22:03:20,608 WARN L250 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_a9f1af20-6c94-4863-a7fc-530b53ff1b43/sv-benchmarks/c/list-properties/list-2.i[23408,23421] [2024-11-13 22:03:20,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:03:20,652 INFO L204 MainTranslator]: Completed translation [2024-11-13 22:03:20,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20 WrapperNode [2024-11-13 22:03:20,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 22:03:20,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 22:03:20,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 22:03:20,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 22:03:20,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,707 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2024-11-13 22:03:20,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 22:03:20,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 22:03:20,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 22:03:20,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 22:03:20,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 22:03:20,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 22:03:20,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 22:03:20,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 22:03:20,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:03:20" (1/1) ... [2024-11-13 22:03:20,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:03:20,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 22:03:20,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 22:03:20,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 22:03:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-13 22:03:20,847 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-13 22:03:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 22:03:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 22:03:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 22:03:20,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 22:03:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 22:03:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 22:03:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 22:03:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 22:03:20,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 22:03:21,001 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 22:03:21,003 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 22:03:21,042 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-13 22:03:21,292 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-13 22:03:21,292 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 22:03:21,321 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 22:03:21,321 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 22:03:21,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:03:21 BoogieIcfgContainer [2024-11-13 22:03:21,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 22:03:21,323 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 22:03:21,324 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 22:03:21,335 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 22:03:21,335 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:03:21" (1/1) ... [2024-11-13 22:03:21,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 22:03:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 27 states and 38 transitions. [2024-11-13 22:03:21,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2024-11-13 22:03:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 22:03:21,408 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:21,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 27 states and 33 transitions. [2024-11-13 22:03:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-13 22:03:21,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 22:03:21,592 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:21,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:22,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 38 states and 55 transitions. [2024-11-13 22:03:22,482 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 55 transitions. [2024-11-13 22:03:22,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 22:03:22,483 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:22,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 38 states and 53 transitions. [2024-11-13 22:03:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2024-11-13 22:03:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 22:03:23,048 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:23,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 38 states and 51 transitions. [2024-11-13 22:03:23,545 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2024-11-13 22:03:23,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 22:03:23,545 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:23,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 49 states and 73 transitions. [2024-11-13 22:03:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 73 transitions. [2024-11-13 22:03:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 22:03:25,246 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 60 states and 95 transitions. [2024-11-13 22:03:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 95 transitions. [2024-11-13 22:03:27,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 22:03:27,225 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:27,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:30,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 70 states and 117 transitions. [2024-11-13 22:03:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 117 transitions. [2024-11-13 22:03:30,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 22:03:30,045 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:30,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 79 states and 135 transitions. [2024-11-13 22:03:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 135 transitions. [2024-11-13 22:03:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 22:03:31,729 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:31,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 79 states and 130 transitions. [2024-11-13 22:03:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 130 transitions. [2024-11-13 22:03:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 22:03:32,441 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 85 states and 145 transitions. [2024-11-13 22:03:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 145 transitions. [2024-11-13 22:03:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 22:03:35,044 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:35,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 87 states and 151 transitions. [2024-11-13 22:03:36,280 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 151 transitions. [2024-11-13 22:03:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 22:03:36,281 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:36,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 89 states and 157 transitions. [2024-11-13 22:03:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 157 transitions. [2024-11-13 22:03:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 22:03:37,585 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:37,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:03:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:03:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:03:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 98 states and 181 transitions. [2024-11-13 22:03:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 181 transitions. [2024-11-13 22:03:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 22:03:42,287 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:03:42,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:03:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:03:42,330 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:03:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:03:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:03:42,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:03:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:03:42,536 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2024-11-13 22:03:42,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 10:03:42 ImpRootNode [2024-11-13 22:03:42,581 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 22:03:42,582 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 22:03:42,583 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 22:03:42,583 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 22:03:42,584 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:03:21" (3/4) ... [2024-11-13 22:03:42,585 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 22:03:42,644 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/witness.graphml [2024-11-13 22:03:42,646 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 22:03:42,647 INFO L158 Benchmark]: Toolchain (without parser) took 22467.13ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 116.2MB in the beginning and 144.8MB in the end (delta: -28.6MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. [2024-11-13 22:03:42,648 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:03:42,650 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.92ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 98.6MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 22:03:42,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.31ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:03:42,651 INFO L158 Benchmark]: Boogie Preprocessor took 45.34ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 96.0MB in the end (delta: 978.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 22:03:42,651 INFO L158 Benchmark]: RCFGBuilder took 567.46ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 82.2MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 22:03:42,652 INFO L158 Benchmark]: CodeCheck took 21258.09ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 82.0MB in the beginning and 147.0MB in the end (delta: -65.0MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2024-11-13 22:03:42,655 INFO L158 Benchmark]: Witness Printer took 64.50ms. Allocated memory is still 268.4MB. Free memory was 147.0MB in the beginning and 144.8MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:03:42,657 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.2s, OverallIterations: 14, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1281 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 736 mSDsluCounter, 1130 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 726 mSDsCounter, 620 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2805 IncrementalHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 620 mSolverCounterUnsat, 404 mSDtfsCounter, 2805 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2420 GetRequests, 2123 SyntacticMatches, 105 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17401 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 282 NumberOfCodeBlocks, 282 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 244 ConstructedInterpolants, 0 QuantifiedInterpolants, 2969 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 6/52 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 - CounterExampleResult [Line: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] COND TRUE __VERIFIER_nondet_int() [L537] p->h = 1 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) VAL [a={-1:0}, p={-1:0}, t={-2:0}] [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND TRUE __VERIFIER_nondet_int() [L544] p->h = 2 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={-1:0}, p={-2:0}, t={-3:0}] [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a VAL [p={-1:0}] [L552] EXPR p->h VAL [p={-1:0}] [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h VAL [p={-1:0}] [L554] COND TRUE p->h == 1 [L555] EXPR p->n [L555] p = p->n VAL [p={-2:0}] [L554] EXPR p->h VAL [p={-2:0}] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.92ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 98.6MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.31ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.34ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 96.0MB in the end (delta: 978.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 567.46ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 82.2MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 21258.09ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 82.0MB in the beginning and 147.0MB in the end (delta: -65.0MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. * Witness Printer took 64.50ms. Allocated memory is still 268.4MB. Free memory was 147.0MB in the beginning and 144.8MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-13 22:03:42,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f1af20-6c94-4863-a7fc-530b53ff1b43/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE