./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL --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 f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:17:21,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:17:21,723 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-19 03:17:21,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:17:21,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:17:21,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:17:21,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:17:21,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:17:21,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:17:21,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:17:21,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:17:21,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:17:21,786 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 03:17:21,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:17:21,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 03:17:21,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:17:21,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:17:21,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:17:21,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:17:21,791 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 03:17:21,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:17:21,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:17:21,793 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:17:21,794 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:17:21,794 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:17:21,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:17:21,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:17:21,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:17:21,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:17:21,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:17:21,799 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:17:21,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:17:21,800 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:17:21,800 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_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 [2023-11-19 03:17:22,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:17:22,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:17:22,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:17:22,122 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:17:22,123 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:17:22,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/list-properties/alternating_list-2.i [2023-11-19 03:17:25,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:17:25,671 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:17:25,680 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/sv-benchmarks/c/list-properties/alternating_list-2.i [2023-11-19 03:17:25,707 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/data/768cdb84d/9f1d6df808c544a4ba6680852c1fb236/FLAGfb9c859c5 [2023-11-19 03:17:25,728 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/data/768cdb84d/9f1d6df808c544a4ba6680852c1fb236 [2023-11-19 03:17:25,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:17:25,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:17:25,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:17:25,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:17:25,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:17:25,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:17:25" (1/1) ... [2023-11-19 03:17:25,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742e7c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:25, skipping insertion in model container [2023-11-19 03:17:25,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:17:25" (1/1) ... [2023-11-19 03:17:25,797 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:17:26,117 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2023-11-19 03:17:26,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:17:26,149 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:17:26,196 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2023-11-19 03:17:26,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:17:26,236 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:17:26,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26 WrapperNode [2023-11-19 03:17:26,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:17:26,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:17:26,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:17:26,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:17:26,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,325 INFO L138 Inliner]: procedures = 124, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2023-11-19 03:17:26,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:17:26,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:17:26,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:17:26,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:17:26,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:17:26,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:17:26,397 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:17:26,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:17:26,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:26,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:17:26,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:17:26,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:17:26,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:17:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-11-19 03:17:26,504 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-11-19 03:17:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 03:17:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 03:17:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 03:17:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:17:26,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 03:17:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 03:17:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:17:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:17:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:17:26,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:17:26,675 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:17:26,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:17:26,731 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-11-19 03:17:26,935 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:17:26,975 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:17:26,975 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 03:17:26,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:17:26 BoogieIcfgContainer [2023-11-19 03:17:26,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:17:26,982 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:17:26,982 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:17:26,995 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:17:26,995 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:17:26" (1/1) ... [2023-11-19 03:17:27,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:17:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:17:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2023-11-19 03:17:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2023-11-19 03:17:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:17:27,083 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:17:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:17:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:17:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:17:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:17:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2023-11-19 03:17:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-11-19 03:17:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 03:17:27,317 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:17:27,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:17:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:17:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:17:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:17:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 29 states and 38 transitions. [2023-11-19 03:17:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2023-11-19 03:17:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 03:17:27,498 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:17:27,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:17:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:17:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:17:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:17:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2023-11-19 03:17:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2023-11-19 03:17:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 03:17:28,067 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:17:28,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:17:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:17:28,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:17:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:17:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:17:28,283 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:17:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:17:28,328 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2023-11-19 03:17:28,364 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-19 03:17:28,365 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated [2023-11-19 03:17:28,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:17:28 ImpRootNode [2023-11-19 03:17:28,372 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:17:28,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:17:28,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:17:28,373 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:17:28,375 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:17:26" (3/4) ... [2023-11-19 03:17:28,376 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 03:17:28,394 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-19 03:17:28,394 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated [2023-11-19 03:17:28,459 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 03:17:28,459 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:17:28,460 INFO L158 Benchmark]: Toolchain (without parser) took 2727.12ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 100.9MB in the beginning and 106.6MB in the end (delta: -5.6MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2023-11-19 03:17:28,461 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 94.4MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:17:28,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.73ms. Allocated memory is still 148.9MB. Free memory was 100.6MB in the beginning and 83.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 03:17:28,462 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.04ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:17:28,463 INFO L158 Benchmark]: Boogie Preprocessor took 68.87ms. Allocated memory is still 148.9MB. Free memory was 81.7MB in the beginning and 80.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:17:28,463 INFO L158 Benchmark]: RCFGBuilder took 585.42ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 80.3MB in the beginning and 163.2MB in the end (delta: -82.9MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2023-11-19 03:17:28,472 INFO L158 Benchmark]: CodeCheck took 1389.54ms. Allocated memory is still 199.2MB. Free memory was 163.2MB in the beginning and 109.7MB in the end (delta: 53.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2023-11-19 03:17:28,473 INFO L158 Benchmark]: Witness Printer took 86.76ms. Allocated memory is still 199.2MB. Free memory was 109.7MB in the beginning and 106.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:17:28,476 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 112 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 68 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 573]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-2:0}, flag=1] [L535] List t; [L536] List p = a; VAL [a={-2:0}, flag=1, p={-2:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 2 [L540] flag = 0 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={-2:0}, flag=0, p={-2:0}, t={-1:0}] [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] flag = 1 VAL [a={-2:0}, flag=1, p={-2:0}, t={-1:0}] [L553] EXPR p->h VAL [a={-2:0}, flag=1, p={-2:0}, t={-1:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 [L556] EXPR p->h VAL [a={-2:0}, flag=0, p={-2:0}, t={-1:0}] [L556] COND TRUE p->h != 1 [L573] reach_error() VAL [a={-2:0}, flag=0, p={-2:0}, t={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 94.4MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 502.73ms. Allocated memory is still 148.9MB. Free memory was 100.6MB in the beginning and 83.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.04ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.87ms. Allocated memory is still 148.9MB. Free memory was 81.7MB in the beginning and 80.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 585.42ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 80.3MB in the beginning and 163.2MB in the end (delta: -82.9MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * CodeCheck took 1389.54ms. Allocated memory is still 199.2MB. Free memory was 163.2MB in the beginning and 109.7MB in the end (delta: 53.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 86.76ms. Allocated memory is still 199.2MB. Free memory was 109.7MB in the beginning and 106.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 03:17:28,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25743f6-3bdd-4b2b-844f-10e2e4d78c05/bin/ukojak-verify-G8NBE6pJGL/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE