./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/verifythis/tree_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/tree_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:11:05,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:11:05,849 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2024-11-13 16:11:05,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:11:05,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:11:05,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:11:05,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:11:05,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:11:05,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:11:05,888 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:11:05,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:11:05,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:11:05,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:11:05,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:11:05,889 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:11:05,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:11:05,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:11:05,889 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:11:05,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:11:05,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:11:05,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:11:05,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:11:05,892 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:11:05,892 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:11:05,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:11:05,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:11:05,892 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:11:05,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:11:05,893 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:11:05,893 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:11:05,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:11:05,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:11:05,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:11:05,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:11:05,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:11:05,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:11:05,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:05,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:11:05,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:11:05,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:11:05,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:11:05,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:11:05,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:11:05,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:11:05,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:11:05,895 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd 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 valid-memcleanup) ) 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 -> e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c [2024-11-13 16:11:06,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:11:06,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:11:06,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:11:06,309 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:11:06,309 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:11:06,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/verifythis/tree_max.c Unable to find full path for "g++" [2024-11-13 16:11:08,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:11:08,626 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:11:08,629 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/sv-benchmarks/c/verifythis/tree_max.c [2024-11-13 16:11:08,638 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/data/ea4b5a0cc/17dd94a46a5648a0928a683fc406ceef/FLAG765f93479 [2024-11-13 16:11:08,668 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/data/ea4b5a0cc/17dd94a46a5648a0928a683fc406ceef [2024-11-13 16:11:08,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:11:08,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:11:08,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:08,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:11:08,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:11:08,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:08" (1/1) ... [2024-11-13 16:11:08,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157089ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:08, skipping insertion in model container [2024-11-13 16:11:08,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:08" (1/1) ... [2024-11-13 16:11:08,704 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:11:08,920 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:08,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:08,959 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:11:08,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:09,016 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:11:09,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09 WrapperNode [2024-11-13 16:11:09,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:09,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:09,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:11:09,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:11:09,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,066 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 40 [2024-11-13 16:11:09,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:09,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:11:09,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:11:09,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:11:09,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,095 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-13 16:11:09,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:11:09,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:11:09,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:11:09,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:11:09,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (1/1) ... [2024-11-13 16:11:09,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:09,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:09,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:11:09,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:11:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:11:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 16:11:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:11:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-11-13 16:11:09,184 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-11-13 16:11:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2024-11-13 16:11:09,184 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2024-11-13 16:11:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:11:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:11:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-11-13 16:11:09,185 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-11-13 16:11:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:11:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 16:11:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:11:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:11:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:11:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:11:09,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:11:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:11:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:11:09,287 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:11:09,289 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:11:09,579 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-13 16:11:09,579 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:11:09,597 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:11:09,598 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 16:11:09,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:09 BoogieIcfgContainer [2024-11-13 16:11:09,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:11:09,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:11:09,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:11:09,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:11:09,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:11:08" (1/3) ... [2024-11-13 16:11:09,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7168c722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:09, skipping insertion in model container [2024-11-13 16:11:09,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:09" (2/3) ... [2024-11-13 16:11:09,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7168c722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:09, skipping insertion in model container [2024-11-13 16:11:09,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:09" (3/3) ... [2024-11-13 16:11:09,613 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_max.c [2024-11-13 16:11:09,631 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:11:09,633 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG tree_max.c that has 4 procedures, 44 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-13 16:11:09,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:11:09,715 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@7cc23916, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:11:09,716 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 16:11:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 16:11:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:11:09,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:09,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:09,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-13 16:11:09,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1784882872, now seen corresponding path program 1 times [2024-11-13 16:11:09,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830629388] [2024-11-13 16:11:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:10,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:10,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:10,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:10,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830629388] [2024-11-13 16:11:10,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830629388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:10,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:10,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:11:10,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114788866] [2024-11-13 16:11:10,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:10,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:11:10,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:11:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:11:10,511 INFO L87 Difference]: Start difference. First operand has 44 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:11:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:11,007 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2024-11-13 16:11:11,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:11:11,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-13 16:11:11,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:11,019 INFO L225 Difference]: With dead ends: 54 [2024-11-13 16:11:11,020 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 16:11:11,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:11:11,026 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:11,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 118 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:11:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 16:11:11,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2024-11-13 16:11:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 35 states have internal predecessors, (40), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-13 16:11:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2024-11-13 16:11:11,078 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 19 [2024-11-13 16:11:11,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:11,080 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2024-11-13 16:11:11,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:11:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2024-11-13 16:11:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:11:11,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:11,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:11,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:11:11,085 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-13 16:11:11,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1558539456, now seen corresponding path program 1 times [2024-11-13 16:11:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013856768] [2024-11-13 16:11:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:11,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:11:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:11,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:11,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013856768] [2024-11-13 16:11:11,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013856768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:11,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:11,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:11,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621556718] [2024-11-13 16:11:11,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:11,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:11:11,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:11:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:11,228 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 16:11:11,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:11,431 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2024-11-13 16:11:11,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:11:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-11-13 16:11:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:11,434 INFO L225 Difference]: With dead ends: 53 [2024-11-13 16:11:11,434 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 16:11:11,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:11,435 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:11,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 38 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:11:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 16:11:11,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-13 16:11:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.25) internal successors, (35), 30 states have internal predecessors, (35), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-13 16:11:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2024-11-13 16:11:11,447 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 21 [2024-11-13 16:11:11,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:11,448 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2024-11-13 16:11:11,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 16:11:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2024-11-13 16:11:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:11:11,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:11,449 INFO L215 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] [2024-11-13 16:11:11,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:11:11,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-13 16:11:11,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash -583725959, now seen corresponding path program 1 times [2024-11-13 16:11:11,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:11,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18364518] [2024-11-13 16:11:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:11,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:11:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 16:11:11,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18364518] [2024-11-13 16:11:11,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18364518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:11,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:11,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:11:11,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399779511] [2024-11-13 16:11:11,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:11,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:11:11,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:11,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:11:11,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:11:11,991 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:11:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:12,350 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2024-11-13 16:11:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:11:12,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-11-13 16:11:12,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:12,352 INFO L225 Difference]: With dead ends: 45 [2024-11-13 16:11:12,352 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 16:11:12,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:11:12,354 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:12,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 128 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:11:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 16:11:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-13 16:11:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-13 16:11:12,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2024-11-13 16:11:12,365 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 31 [2024-11-13 16:11:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:12,365 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2024-11-13 16:11:12,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:11:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2024-11-13 16:11:12,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 16:11:12,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:12,367 INFO L215 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] [2024-11-13 16:11:12,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:11:12,367 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting checkErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-13 16:11:12,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:12,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1389688533, now seen corresponding path program 1 times [2024-11-13 16:11:12,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:12,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947237257] [2024-11-13 16:11:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:12,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:13,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:13,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:13,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:13,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:11:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:13,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:13,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 16:11:13,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947237257] [2024-11-13 16:11:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947237257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004059970] [2024-11-13 16:11:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:13,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:13,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:13,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:13,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:11:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:13,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 16:11:13,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:13,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 16:11:14,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 16:11:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 16:11:14,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 16:11:14,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004059970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:14,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:14,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 10] total 23 [2024-11-13 16:11:14,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077528676] [2024-11-13 16:11:14,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:14,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:11:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:11:14,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:11:14,530 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 23 states, 20 states have (on average 2.0) internal successors, (40), 17 states have internal predecessors, (40), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 16:11:15,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:15,443 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2024-11-13 16:11:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:11:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.0) internal successors, (40), 17 states have internal predecessors, (40), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) Word has length 44 [2024-11-13 16:11:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:15,445 INFO L225 Difference]: With dead ends: 56 [2024-11-13 16:11:15,445 INFO L226 Difference]: Without dead ends: 56 [2024-11-13 16:11:15,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 83 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2024-11-13 16:11:15,446 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:15,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 213 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:11:15,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-13 16:11:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-13 16:11:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 11 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-13 16:11:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2024-11-13 16:11:15,454 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 44 [2024-11-13 16:11:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:15,454 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2024-11-13 16:11:15,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.0) internal successors, (40), 17 states have internal predecessors, (40), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 16:11:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2024-11-13 16:11:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 16:11:15,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:15,456 INFO L215 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] [2024-11-13 16:11:15,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:11:15,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:15,657 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-13 16:11:15,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:15,657 INFO L85 PathProgramCache]: Analyzing trace with hash 266098275, now seen corresponding path program 1 times [2024-11-13 16:11:15,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:15,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691274871] [2024-11-13 16:11:15,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:15,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:15,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:15,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:15,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:15,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:11:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:16,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:16,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:16,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 16:11:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 16:11:16,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691274871] [2024-11-13 16:11:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691274871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:16,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020339334] [2024-11-13 16:11:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:16,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:16,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:16,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:16,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:11:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:16,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 16:11:16,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 16:11:16,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020339334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:16,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:11:16,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 16 [2024-11-13 16:11:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339313402] [2024-11-13 16:11:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:16,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:11:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:16,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:11:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:11:16,447 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 16:11:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:16,523 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-11-13 16:11:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:11:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2024-11-13 16:11:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:16,524 INFO L225 Difference]: With dead ends: 60 [2024-11-13 16:11:16,525 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 16:11:16,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:11:16,526 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 5 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:16,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 296 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 16:11:16,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-13 16:11:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-13 16:11:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2024-11-13 16:11:16,535 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 46 [2024-11-13 16:11:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:16,535 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2024-11-13 16:11:16,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 16:11:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2024-11-13 16:11:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 16:11:16,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:16,539 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 16:11:16,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:11:16,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:16,742 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-13 16:11:16,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash 358548016, now seen corresponding path program 1 times [2024-11-13 16:11:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:16,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541015565] [2024-11-13 16:11:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:16,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:11:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 16:11:17,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:17,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541015565] [2024-11-13 16:11:17,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541015565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:17,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484176121] [2024-11-13 16:11:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:17,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:17,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:17,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:17,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:11:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 16:11:17,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:17,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:11:17,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:11:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 16:11:18,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 16:11:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484176121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:18,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:18,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 21 [2024-11-13 16:11:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006020226] [2024-11-13 16:11:18,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:18,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:11:18,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:11:18,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:11:18,659 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 13 states have internal predecessors, (48), 6 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (13), 9 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-13 16:11:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:19,817 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2024-11-13 16:11:19,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:11:19,818 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 13 states have internal predecessors, (48), 6 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (13), 9 states have call predecessors, (13), 5 states have call successors, (13) Word has length 50 [2024-11-13 16:11:19,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:19,820 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:11:19,820 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 16:11:19,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2024-11-13 16:11:19,826 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 96 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:19,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 168 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:11:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 16:11:19,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2024-11-13 16:11:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 72 states have internal predecessors, (83), 19 states have call successors, (19), 8 states have call predecessors, (19), 12 states have return successors, (28), 20 states have call predecessors, (28), 19 states have call successors, (28) [2024-11-13 16:11:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2024-11-13 16:11:19,856 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 50 [2024-11-13 16:11:19,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:19,856 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2024-11-13 16:11:19,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 13 states have internal predecessors, (48), 6 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (13), 9 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-13 16:11:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2024-11-13 16:11:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 16:11:19,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:19,861 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 16:11:19,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:20,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 16:11:20,062 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting checkErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-13 16:11:20,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:20,063 INFO L85 PathProgramCache]: Analyzing trace with hash 242184370, now seen corresponding path program 1 times [2024-11-13 16:11:20,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:20,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296081246] [2024-11-13 16:11:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:20,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:20,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:20,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:20,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:20,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:11:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:21,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:21,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 16:11:21,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296081246] [2024-11-13 16:11:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296081246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:21,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008028910] [2024-11-13 16:11:21,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:21,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:21,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:21,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:11:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:21,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 16:11:21,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:21,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:11:21,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:11:21,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-13 16:11:21,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-13 16:11:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 16:11:22,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 16:11:22,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008028910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:22,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:22,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 14] total 30 [2024-11-13 16:11:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847055811] [2024-11-13 16:11:22,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:22,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 16:11:22,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 16:11:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2024-11-13 16:11:22,584 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand has 30 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 22 states have internal predecessors, (63), 10 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (16), 11 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-13 16:11:24,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:24,936 INFO L93 Difference]: Finished difference Result 206 states and 275 transitions. [2024-11-13 16:11:24,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 16:11:24,937 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 22 states have internal predecessors, (63), 10 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (16), 11 states have call predecessors, (16), 8 states have call successors, (16) Word has length 50 [2024-11-13 16:11:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:24,944 INFO L225 Difference]: With dead ends: 206 [2024-11-13 16:11:24,945 INFO L226 Difference]: Without dead ends: 204 [2024-11-13 16:11:24,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=305, Invalid=2665, Unknown=0, NotChecked=0, Total=2970 [2024-11-13 16:11:24,947 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 123 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:24,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 408 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 16:11:24,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-13 16:11:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 197. [2024-11-13 16:11:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 135 states have (on average 1.2222222222222223) internal successors, (165), 140 states have internal predecessors, (165), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (68), 39 states have call predecessors, (68), 35 states have call successors, (68) [2024-11-13 16:11:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 268 transitions. [2024-11-13 16:11:24,991 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 268 transitions. Word has length 50 [2024-11-13 16:11:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:24,992 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 268 transitions. [2024-11-13 16:11:24,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 22 states have internal predecessors, (63), 10 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (16), 11 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-13 16:11:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 268 transitions. [2024-11-13 16:11:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 16:11:24,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:25,000 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 16:11:25,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:11:25,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:25,201 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting checkErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-13 16:11:25,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash -677748063, now seen corresponding path program 2 times [2024-11-13 16:11:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:25,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614689162] [2024-11-13 16:11:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:25,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 16:11:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:11:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:11:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 16:11:26,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:26,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614689162] [2024-11-13 16:11:26,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614689162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:26,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189175476] [2024-11-13 16:11:26,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:11:26,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:26,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:26,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:26,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:11:26,666 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:11:26,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:26,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 16:11:26,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:26,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:11:26,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:11:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-13 16:11:27,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-13 16:11:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189175476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:28,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:28,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 19] total 44 [2024-11-13 16:11:28,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543210066] [2024-11-13 16:11:28,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:28,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 16:11:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:28,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 16:11:28,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1733, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 16:11:28,222 INFO L87 Difference]: Start difference. First operand 197 states and 268 transitions. Second operand has 44 states, 37 states have (on average 2.054054054054054) internal successors, (76), 34 states have internal predecessors, (76), 15 states have call successors, (21), 7 states have call predecessors, (21), 12 states have return successors, (17), 16 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-13 16:11:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:29,814 INFO L93 Difference]: Finished difference Result 296 states and 406 transitions. [2024-11-13 16:11:29,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 16:11:29,815 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 37 states have (on average 2.054054054054054) internal successors, (76), 34 states have internal predecessors, (76), 15 states have call successors, (21), 7 states have call predecessors, (21), 12 states have return successors, (17), 16 states have call predecessors, (17), 11 states have call successors, (17) Word has length 62 [2024-11-13 16:11:29,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:29,818 INFO L225 Difference]: With dead ends: 296 [2024-11-13 16:11:29,822 INFO L226 Difference]: Without dead ends: 296 [2024-11-13 16:11:29,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=274, Invalid=3032, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 16:11:29,826 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 91 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:29,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 362 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:11:29,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-13 16:11:29,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 241. [2024-11-13 16:11:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 167 states have (on average 1.215568862275449) internal successors, (203), 172 states have internal predecessors, (203), 41 states have call successors, (41), 21 states have call predecessors, (41), 31 states have return successors, (82), 47 states have call predecessors, (82), 41 states have call successors, (82) [2024-11-13 16:11:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 326 transitions. [2024-11-13 16:11:29,886 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 326 transitions. Word has length 62 [2024-11-13 16:11:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:29,886 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 326 transitions. [2024-11-13 16:11:29,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 37 states have (on average 2.054054054054054) internal successors, (76), 34 states have internal predecessors, (76), 15 states have call successors, (21), 7 states have call predecessors, (21), 12 states have return successors, (17), 16 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-13 16:11:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 326 transitions. [2024-11-13 16:11:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 16:11:29,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:29,889 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 16:11:29,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:11:30,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:30,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-13 16:11:30,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1572615861, now seen corresponding path program 1 times [2024-11-13 16:11:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801299369] [2024-11-13 16:11:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:30,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 16:11:30,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 16:11:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 16:11:30,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 16:11:30,154 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 16:11:30,157 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2024-11-13 16:11:30,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2024-11-13 16:11:30,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 16:11:30,163 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:30,208 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 16:11:30,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 04:11:30 BoogieIcfgContainer [2024-11-13 16:11:30,213 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 16:11:30,213 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 16:11:30,213 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 16:11:30,214 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 16:11:30,215 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:09" (3/4) ... [2024-11-13 16:11:30,216 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 16:11:30,277 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 16:11:30,278 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 16:11:30,279 INFO L158 Benchmark]: Toolchain (without parser) took 21605.96ms. Allocated memory was 109.1MB in the beginning and 218.1MB in the end (delta: 109.1MB). Free memory was 84.1MB in the beginning and 169.9MB in the end (delta: -85.8MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2024-11-13 16:11:30,279 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:11:30,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.04ms. Allocated memory is still 109.1MB. Free memory was 84.1MB in the beginning and 72.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:11:30,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.29ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 71.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:11:30,280 INFO L158 Benchmark]: Boogie Preprocessor took 43.90ms. Allocated memory is still 109.1MB. Free memory was 71.7MB in the beginning and 70.0MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:11:30,280 INFO L158 Benchmark]: RCFGBuilder took 486.83ms. Allocated memory is still 109.1MB. Free memory was 70.0MB in the beginning and 56.6MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:11:30,280 INFO L158 Benchmark]: TraceAbstraction took 20609.02ms. Allocated memory was 109.1MB in the beginning and 218.1MB in the end (delta: 109.1MB). Free memory was 55.8MB in the beginning and 172.2MB in the end (delta: -116.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:11:30,281 INFO L158 Benchmark]: Witness Printer took 64.47ms. Allocated memory is still 218.1MB. Free memory was 172.2MB in the beginning and 169.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:11:30,283 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.04ms. Allocated memory is still 109.1MB. Free memory was 84.1MB in the beginning and 72.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.29ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 71.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.90ms. Allocated memory is still 109.1MB. Free memory was 71.7MB in the beginning and 70.0MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 486.83ms. Allocated memory is still 109.1MB. Free memory was 70.0MB in the beginning and 56.6MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 20609.02ms. Allocated memory was 109.1MB in the beginning and 218.1MB in the end (delta: 109.1MB). Free memory was 55.8MB in the beginning and 172.2MB in the end (delta: -116.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 64.47ms. Allocated memory is still 218.1MB. Free memory was 172.2MB in the beginning and 169.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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: 65]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L66] CALL, EXPR nondet_tree() [L24] COND FALSE !(__VERIFIER_nondet_bool()) [L27] struct node *n = (struct node *)malloc(sizeof(struct node)); [L28] n->data = __VERIFIER_nondet_int() [L29] CALL, EXPR nondet_tree() [L24] COND TRUE __VERIFIER_nondet_bool() [L25] return 0; VAL [\result={0:0}] [L29] RET, EXPR nondet_tree() VAL [n={-1:0}] [L29] n->left = nondet_tree() [L30] CALL, EXPR nondet_tree() [L24] COND TRUE __VERIFIER_nondet_bool() [L25] return 0; VAL [\result={0:0}] [L30] RET, EXPR nondet_tree() VAL [n={-1:0}] [L30] n->right = nondet_tree() [L31] return n; VAL [\result={-1:0}] [L66] RET, EXPR nondet_tree() [L66] CALL task(nondet_tree()) [L61] CALL, EXPR max(n) VAL [\old(n)={-1:0}] [L36] COND FALSE !(!n) [L39] EXPR n->data [L39] int a = n->data; [L40] EXPR n->left VAL [\old(n)={-1:0}, a=-2147483648, n={-1:0}] [L40] CALL, EXPR max(n->left) VAL [\old(n)={0:0}] [L36] COND TRUE !n [L37] return -2147483648; VAL [\old(n)={0:0}, \result=-2147483648] [L40] RET, EXPR max(n->left) VAL [\old(n)={-1:0}, a=-2147483648, n={-1:0}] [L40] int b = max(n->left); [L41] EXPR n->right VAL [\old(n)={-1:0}, a=-2147483648, b=-2147483648] [L41] CALL, EXPR max(n->right) VAL [\old(n)={0:0}] [L36] COND TRUE !n [L37] return -2147483648; VAL [\old(n)={0:0}, \result=-2147483648] [L41] RET, EXPR max(n->right) VAL [\old(n)={-1:0}, a=-2147483648, b=-2147483648] [L41] int c = max(n->right); [L42] COND TRUE b >= a && b >= c [L42] return b; VAL [\old(n)={-1:0}, \result=-2147483648] [L61] RET, EXPR max(n) VAL [n={-1:0}] [L61] int a = max(n); [L62] CALL check(n, a) [L49] COND TRUE \read(*n) [L50] EXPR n->data [L50] CALL __VERIFIER_assert(n->data <= a) [L15] COND FALSE !(!cond) [L50] RET __VERIFIER_assert(n->data <= a) [L52] COND FALSE !(__VERIFIER_nondet_bool()) [L55] EXPR n->right VAL [\old(a)=-2147483648, \old(n)={-1:0}, a=-2147483648] [L55] CALL check(n->right, a) VAL [\old(a)=-2147483648, \old(n)={0:0}] [L49] COND FALSE !(\read(*n)) [L55] RET check(n->right, a) VAL [\old(a)=-2147483648, \old(n)={-1:0}, a=-2147483648] [L62] RET check(n, a) VAL [a=-2147483648, n={-1:0}] [L66] RET task(nondet_tree()) - UnprovableResult [Line: 13]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 44 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 20.5s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 501 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 464 mSDsluCounter, 1731 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1551 mSDsCounter, 174 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4320 IncrementalHoareTripleChecker+Invalid, 4494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 174 mSolverCounterUnsat, 180 mSDtfsCounter, 4320 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 689 GetRequests, 480 SyntacticMatches, 9 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241occurred in iteration=8, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 72 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 764 ConstructedInterpolants, 65 QuantifiedInterpolants, 5296 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1424 ConjunctsInSsa, 240 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 403/471 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! [2024-11-13 16:11:30,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77201d73-1111-4adb-943c-38c7c945b299/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)