./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_del_iter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cce1bb7a06b9dd56fbf663e182ffe801720ee05ee19a126a08070f1616bc4afe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:29:23,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:29:23,410 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:29:23,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:29:23,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:29:23,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:29:23,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:29:23,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:29:23,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:29:23,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:29:23,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:29:23,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:29:23,445 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:29:23,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:29:23,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:29:23,447 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:29:23,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:29:23,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:29:23,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:29:23,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:29:23,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:29:23,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:29:23,451 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:29:23,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:29:23,452 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:29:23,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:29:23,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:29:23,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:29:23,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:23,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:29:23,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:29:23,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:29:23,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:29:23,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:29:23,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:29:23,457 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:29:23,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:29:23,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:29:23,458 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:29:23,458 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cce1bb7a06b9dd56fbf663e182ffe801720ee05ee19a126a08070f1616bc4afe [2023-11-12 02:29:23,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:29:23,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:29:23,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:29:23,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:29:23,796 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:29:23,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/verifythis/tree_del_iter.c [2023-11-12 02:29:26,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:29:27,152 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:29:27,153 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/sv-benchmarks/c/verifythis/tree_del_iter.c [2023-11-12 02:29:27,163 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/data/62a8fba96/b89cdf515b3c49fcae0b207bff3a7311/FLAG98b3760b7 [2023-11-12 02:29:27,182 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/data/62a8fba96/b89cdf515b3c49fcae0b207bff3a7311 [2023-11-12 02:29:27,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:29:27,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:29:27,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:27,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:29:27,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:29:27,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d17b5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27, skipping insertion in model container [2023-11-12 02:29:27,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:29:27,449 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_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2023-11-12 02:29:27,496 WARN L1577 CHandler]: Possible shadowing of function min [2023-11-12 02:29:27,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:27,537 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:29:27,547 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_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2023-11-12 02:29:27,556 WARN L1577 CHandler]: Possible shadowing of function min [2023-11-12 02:29:27,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:27,587 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:29:27,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27 WrapperNode [2023-11-12 02:29:27,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:27,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:27,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:29:27,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:29:27,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,639 INFO L138 Inliner]: procedures = 29, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 114 [2023-11-12 02:29:27,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:27,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:29:27,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:29:27,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:29:27,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:29:27,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:29:27,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:29:27,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:29:27,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (1/1) ... [2023-11-12 02:29:27,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:27,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:27,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:29:27,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:29:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:29:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:29:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:29:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:29:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure min [2023-11-12 02:29:27,773 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2023-11-12 02:29:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:29:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 02:29:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 02:29:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:29:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2023-11-12 02:29:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2023-11-12 02:29:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:29:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:29:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure size [2023-11-12 02:29:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2023-11-12 02:29:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:29:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:29:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 02:29:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 02:29:27,779 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2023-11-12 02:29:27,779 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2023-11-12 02:29:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:29:27,905 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:29:27,907 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:29:28,324 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:29:28,332 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:29:28,332 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:29:28,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:28 BoogieIcfgContainer [2023-11-12 02:29:28,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:29:28,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:29:28,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:29:28,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:29:28,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:29:27" (1/3) ... [2023-11-12 02:29:28,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e286033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:28, skipping insertion in model container [2023-11-12 02:29:28,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:27" (2/3) ... [2023-11-12 02:29:28,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e286033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:28, skipping insertion in model container [2023-11-12 02:29:28,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:28" (3/3) ... [2023-11-12 02:29:28,343 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2023-11-12 02:29:28,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:29:28,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:29:28,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:28,425 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@527be26e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:28,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:29:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 57 states have internal predecessors, (72), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:29:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-12 02:29:28,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:28,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:28,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:28,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:28,448 INFO L85 PathProgramCache]: Analyzing trace with hash -999986209, now seen corresponding path program 1 times [2023-11-12 02:29:28,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:28,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139067191] [2023-11-12 02:29:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:28,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:28,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:28,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:29:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:29:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:29,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-12 02:29:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:29:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:29,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:29,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139067191] [2023-11-12 02:29:29,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139067191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:29,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:29,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:29:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782597821] [2023-11-12 02:29:29,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:29,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:29:29,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:29,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:29:29,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:29:29,155 INFO L87 Difference]: Start difference. First operand has 84 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 57 states have internal predecessors, (72), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:29:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:29,644 INFO L93 Difference]: Finished difference Result 150 states and 209 transitions. [2023-11-12 02:29:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:29:29,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-11-12 02:29:29,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:29,660 INFO L225 Difference]: With dead ends: 150 [2023-11-12 02:29:29,660 INFO L226 Difference]: Without dead ends: 85 [2023-11-12 02:29:29,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:29:29,672 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 64 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:29,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 285 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:29:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-12 02:29:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2023-11-12 02:29:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 53 states have internal predecessors, (61), 20 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (23), 20 states have call predecessors, (23), 20 states have call successors, (23) [2023-11-12 02:29:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2023-11-12 02:29:29,756 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 37 [2023-11-12 02:29:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:29,757 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2023-11-12 02:29:29,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:29:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2023-11-12 02:29:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-12 02:29:29,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:29,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:29,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:29:29,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:29,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2141758024, now seen corresponding path program 1 times [2023-11-12 02:29:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451574602] [2023-11-12 02:29:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:29,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:29:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:29:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:29:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-12 02:29:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:29:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:29:30,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:30,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451574602] [2023-11-12 02:29:30,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451574602] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589288697] [2023-11-12 02:29:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:30,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:30,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:30,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:30,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:29:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-12 02:29:30,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:29:30,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:29:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:29:30,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589288697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:29:30,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:29:30,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 13 [2023-11-12 02:29:30,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037662557] [2023-11-12 02:29:30,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:29:30,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:29:30,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:29:30,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:29:30,938 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-12 02:29:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:31,582 INFO L93 Difference]: Finished difference Result 144 states and 190 transitions. [2023-11-12 02:29:31,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:29:31,584 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 49 [2023-11-12 02:29:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:31,591 INFO L225 Difference]: With dead ends: 144 [2023-11-12 02:29:31,592 INFO L226 Difference]: Without dead ends: 85 [2023-11-12 02:29:31,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:29:31,598 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 45 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:31,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 441 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:29:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-12 02:29:31,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2023-11-12 02:29:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.169811320754717) internal successors, (62), 55 states have internal predecessors, (62), 20 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2023-11-12 02:29:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2023-11-12 02:29:31,633 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 49 [2023-11-12 02:29:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:31,633 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2023-11-12 02:29:31,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-12 02:29:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2023-11-12 02:29:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 02:29:31,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:31,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:31,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:31,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:31,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:31,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:31,854 INFO L85 PathProgramCache]: Analyzing trace with hash 15343169, now seen corresponding path program 1 times [2023-11-12 02:29:31,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:31,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163733811] [2023-11-12 02:29:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:31,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:29:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:29:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-12 02:29:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:29:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:29:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:29:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-12 02:29:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163733811] [2023-11-12 02:29:32,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163733811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:32,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:32,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:29:32,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055449050] [2023-11-12 02:29:32,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:32,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:29:32,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:29:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:29:32,192 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-12 02:29:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:32,637 INFO L93 Difference]: Finished difference Result 144 states and 190 transitions. [2023-11-12 02:29:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:29:32,638 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2023-11-12 02:29:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:32,646 INFO L225 Difference]: With dead ends: 144 [2023-11-12 02:29:32,646 INFO L226 Difference]: Without dead ends: 87 [2023-11-12 02:29:32,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:29:32,652 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 117 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:32,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 356 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:29:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-12 02:29:32,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2023-11-12 02:29:32,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 57 states have internal predecessors, (63), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (27), 20 states have call predecessors, (27), 20 states have call successors, (27) [2023-11-12 02:29:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2023-11-12 02:29:32,682 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 61 [2023-11-12 02:29:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:32,683 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2023-11-12 02:29:32,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-12 02:29:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2023-11-12 02:29:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-12 02:29:32,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:32,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:32,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:29:32,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:32,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:32,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1095896435, now seen corresponding path program 1 times [2023-11-12 02:29:32,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:32,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370545070] [2023-11-12 02:29:32,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:32,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:29:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:29:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:29:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:29:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:29:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:29:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:29:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-12 02:29:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-12 02:29:33,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:33,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370545070] [2023-11-12 02:29:33,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370545070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:33,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215206380] [2023-11-12 02:29:33,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:33,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:33,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:33,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:33,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:29:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:29:33,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-12 02:29:33,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:33,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215206380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:33,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:29:33,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 18 [2023-11-12 02:29:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231009085] [2023-11-12 02:29:33,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:33,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:29:33,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:33,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:29:33,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:29:33,632 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-12 02:29:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:33,779 INFO L93 Difference]: Finished difference Result 135 states and 177 transitions. [2023-11-12 02:29:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:29:33,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 74 [2023-11-12 02:29:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:33,782 INFO L225 Difference]: With dead ends: 135 [2023-11-12 02:29:33,782 INFO L226 Difference]: Without dead ends: 86 [2023-11-12 02:29:33,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:29:33,784 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 48 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:33,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 554 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:29:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-12 02:29:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-12 02:29:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 59 states have internal predecessors, (64), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) [2023-11-12 02:29:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 114 transitions. [2023-11-12 02:29:33,800 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 114 transitions. Word has length 74 [2023-11-12 02:29:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:33,801 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 114 transitions. [2023-11-12 02:29:33,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-12 02:29:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 114 transitions. [2023-11-12 02:29:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-12 02:29:33,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:33,803 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:33,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:34,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:34,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:34,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:34,010 INFO L85 PathProgramCache]: Analyzing trace with hash 373085558, now seen corresponding path program 1 times [2023-11-12 02:29:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:34,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332297349] [2023-11-12 02:29:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:34,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:34,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:29:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:34,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:29:34,197 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:29:34,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 02:29:34,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:29:34,206 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 02:29:34,211 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:29:34,253 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret8 [2023-11-12 02:29:34,255 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret9 [2023-11-12 02:29:34,255 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret45 [2023-11-12 02:29:34,255 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-12 02:29:34,258 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated [2023-11-12 02:29:34,258 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-12 02:29:34,259 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem13 [2023-11-12 02:29:34,259 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem13 [2023-11-12 02:29:34,260 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated [2023-11-12 02:29:34,260 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-11-12 02:29:34,261 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28 [2023-11-12 02:29:34,261 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-12 02:29:34,261 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28 [2023-11-12 02:29:34,262 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28 [2023-11-12 02:29:34,262 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30 [2023-11-12 02:29:34,262 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-12 02:29:34,263 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30 [2023-11-12 02:29:34,263 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-12 02:29:34,263 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-12 02:29:34,263 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28 [2023-11-12 02:29:34,264 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret33 could not be translated [2023-11-12 02:29:34,264 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34 [2023-11-12 02:29:34,265 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34 [2023-11-12 02:29:34,265 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem22 [2023-11-12 02:29:34,266 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem22 [2023-11-12 02:29:34,266 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret23 could not be translated [2023-11-12 02:29:34,267 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem26 [2023-11-12 02:29:34,267 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem26 [2023-11-12 02:29:34,268 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret27 could not be translated [2023-11-12 02:29:34,268 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret35 could not be translated [2023-11-12 02:29:34,269 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34 [2023-11-12 02:29:34,269 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34 [2023-11-12 02:29:34,269 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-11-12 02:29:34,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:29:34 BoogieIcfgContainer [2023-11-12 02:29:34,283 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:29:34,283 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:29:34,284 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:29:34,284 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:29:34,284 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:28" (3/4) ... [2023-11-12 02:29:34,285 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 02:29:34,294 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret8 [2023-11-12 02:29:34,295 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret9 [2023-11-12 02:29:34,295 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret45 [2023-11-12 02:29:34,295 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-12 02:29:34,296 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-12 02:29:34,296 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated [2023-11-12 02:29:34,296 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem13 [2023-11-12 02:29:34,297 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem13 [2023-11-12 02:29:34,297 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated [2023-11-12 02:29:34,297 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-11-12 02:29:34,298 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28 [2023-11-12 02:29:34,298 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-12 02:29:34,298 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28 [2023-11-12 02:29:34,299 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30 [2023-11-12 02:29:34,299 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-12 02:29:34,299 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28 [2023-11-12 02:29:34,299 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem28 [2023-11-12 02:29:34,300 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30 [2023-11-12 02:29:34,300 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-12 02:29:34,300 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-12 02:29:34,300 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret33 could not be translated [2023-11-12 02:29:34,301 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34 [2023-11-12 02:29:34,301 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34 [2023-11-12 02:29:34,301 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem22 [2023-11-12 02:29:34,302 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem22 [2023-11-12 02:29:34,302 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret23 could not be translated [2023-11-12 02:29:34,303 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem26 [2023-11-12 02:29:34,303 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret27 could not be translated [2023-11-12 02:29:34,303 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem26 [2023-11-12 02:29:34,304 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret35 could not be translated [2023-11-12 02:29:34,304 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34 [2023-11-12 02:29:34,304 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc34 [2023-11-12 02:29:34,305 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-11-12 02:29:34,345 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:29:34,345 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:29:34,345 INFO L158 Benchmark]: Toolchain (without parser) took 7152.58ms. Allocated memory was 151.0MB in the beginning and 190.8MB in the end (delta: 39.8MB). Free memory was 104.8MB in the beginning and 105.9MB in the end (delta: -1.1MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2023-11-12 02:29:34,346 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:29:34,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.37ms. Allocated memory is still 151.0MB. Free memory was 104.8MB in the beginning and 92.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:29:34,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.21ms. Allocated memory is still 151.0MB. Free memory was 92.2MB in the beginning and 90.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:29:34,347 INFO L158 Benchmark]: Boogie Preprocessor took 43.54ms. Allocated memory is still 151.0MB. Free memory was 90.3MB in the beginning and 88.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:29:34,347 INFO L158 Benchmark]: RCFGBuilder took 649.74ms. Allocated memory is still 151.0MB. Free memory was 88.3MB in the beginning and 112.7MB in the end (delta: -24.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 02:29:34,348 INFO L158 Benchmark]: TraceAbstraction took 5946.10ms. Allocated memory was 151.0MB in the beginning and 190.8MB in the end (delta: 39.8MB). Free memory was 112.0MB in the beginning and 112.2MB in the end (delta: -108.7kB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2023-11-12 02:29:34,348 INFO L158 Benchmark]: Witness Printer took 61.50ms. Allocated memory is still 190.8MB. Free memory was 111.1MB in the beginning and 105.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:29:34,350 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.37ms. Allocated memory is still 151.0MB. Free memory was 104.8MB in the beginning and 92.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.21ms. Allocated memory is still 151.0MB. Free memory was 92.2MB in the beginning and 90.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.54ms. Allocated memory is still 151.0MB. Free memory was 90.3MB in the beginning and 88.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 649.74ms. Allocated memory is still 151.0MB. Free memory was 88.3MB in the beginning and 112.7MB in the end (delta: -24.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5946.10ms. Allocated memory was 151.0MB in the beginning and 190.8MB in the end (delta: 39.8MB). Free memory was 112.0MB in the beginning and 112.2MB in the end (delta: -108.7kB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. * Witness Printer took 61.50ms. Allocated memory is still 190.8MB. Free memory was 111.1MB in the beginning and 105.9MB in the end (delta: 5.2MB). 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: unknown boogie variable #t~ret8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret45 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem13 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem13 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem28 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem28 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem28 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem30 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem30 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem28 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc34 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc34 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem22 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem22 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret23 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem26 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem26 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret27 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret35 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc34 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc34 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret45 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem13 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem13 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem28 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem28 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem30 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem28 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem28 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem30 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc34 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc34 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem22 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem22 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret23 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem26 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret27 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem26 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret35 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc34 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc34 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L110] CALL, EXPR nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L30] RET, EXPR nondet_tree() VAL [n={-1:0}] [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L31] RET, EXPR nondet_tree() VAL [n={-1:0}] [L31] n->right = nondet_tree() [L32] return n; VAL [\result={-1:0}, n={-1:0}] [L110] RET, EXPR nondet_tree() [L110] CALL task(nondet_tree()) [L86] CALL, EXPR min(t) VAL [n={-1:0}] [L37] COND FALSE !(!n) [L40] EXPR n->data [L40] int a = n->data; [L41] EXPR n->left VAL [a=2147483647, n={-1:0}, n={-1:0}] [L41] CALL, EXPR min(n->left) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L41] RET, EXPR min(n->left) VAL [a=2147483647, n={-1:0}, n={-1:0}] [L41] int b = min(n->left); [L42] EXPR n->right VAL [a=2147483647, b=2147483647, n={-1:0}, n={-1:0}] [L42] CALL, EXPR min(n->right) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L42] RET, EXPR min(n->right) VAL [a=2147483647, b=2147483647, n={-1:0}, n={-1:0}] [L42] int c = min(n->right); [L43] COND TRUE b <= a && b <= c [L43] return b; VAL [\result=2147483647, a=2147483647, b=2147483647, c=2147483647, n={-1:0}, n={-1:0}] [L86] RET, EXPR min(t) VAL [t={-1:0}, t={-1:0}] [L86] int a = min(t); [L87] int b; VAL [a=2147483647, b={5:0}, t={-1:0}, t={-1:0}] [L89] CALL, EXPR size(t) VAL [t={-1:0}] [L81] COND FALSE !(!t) [L82] EXPR t->left VAL [t={-1:0}, t={-1:0}] [L82] CALL, EXPR size(t->left) VAL [t={0:0}] [L81] COND TRUE !t [L81] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L82] RET, EXPR size(t->left) VAL [t={-1:0}, t={-1:0}] [L82] EXPR t->right VAL [t={-1:0}, t={-1:0}] [L82] CALL, EXPR size(t->right) VAL [t={0:0}] [L81] COND TRUE !t [L81] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L82] RET, EXPR size(t->right) VAL [t={-1:0}, t={-1:0}] [L82] return size(t->left) + size(t->right) + 1; [L89] RET, EXPR size(t) VAL [a=2147483647, b={5:0}, t={-1:0}, t={-1:0}] [L89] int n = size(t); [L90] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L90] RET assume_cycle_if_not(n != 0) [L91] EXPR, FCALL calloc(n, sizeof(int)) VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}] [L91] int *x = calloc(n, sizeof(int)); VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}, x={-2:0}] [L92] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-2:0}, t={-1:0}] [L70] COND FALSE !(!t) [L73] EXPR t->left VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=1, t={-1:0}, t={-1:0}] [L73] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-2:0}, t={0:0}] [L70] COND TRUE !t [L71] return i; VAL [\old(i)=1, \result=1, a={-2:0}, a={-2:0}, i=1, t={0:0}, t={0:0}] [L73] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=1, t={-1:0}, t={-1:0}] [L73] i = tree_inorder(t->left, a, i) [L74] EXPR i++ [L74] EXPR t->data [L74] a[i++] = t->data [L75] EXPR t->right VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}] [L75] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-2:0}, t={0:0}] [L70] COND TRUE !t [L71] return i; VAL [\old(i)=2, \result=2, a={-2:0}, a={-2:0}, i=2, t={0:0}, t={0:0}] [L75] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}] [L75] i = tree_inorder(t->right, a, i) [L76] return i; VAL [\old(i)=1, \result=2, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}] [L92] RET tree_inorder(t, x, n) VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}, x={-2:0}] [L93] EXPR x[0] VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}, x={-2:0}] [L93] CALL __VERIFIER_assert(a == x[0]) VAL [\old(cond)=0] [L16] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 288 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 274 mSDsluCounter, 1636 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1358 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1166 IncrementalHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 278 mSDtfsCounter, 1166 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=4, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 1067 SizeOfPredicates, 10 NumberOfNonLiveVariables, 634 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 124/132 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-12 02:29:34,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c8d641c-c4a8-4b55-bda6-24eb51099b5c/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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