./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ff7f98b41a2da3578e790df894a867e943a0857e97661a8032b524a76ca3b438 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:39:10,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:39:10,716 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-12-02 12:39:10,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:39:10,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:39:10,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:39:10,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:39:10,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:39:10,743 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:39:10,743 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:39:10,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:39:10,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:39:10,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:39:10,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:39:10,743 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:39:10,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:39:10,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:39:10,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:39:10,744 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 12:39:10,744 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 12:39:10,744 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 12:39:10,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:39:10,744 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 12:39:10,744 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:39:10,744 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:39:10,745 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:39:10,745 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:39:10,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:39:10,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:39:10,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:39:10,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:39:10,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:39:10,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:39:10,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:39:10,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:39:10,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:39:10,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:39:10,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:39:10,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:39:10,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:39:10,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:39:10,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:39:10,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:39:10,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:39:10,746 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_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1 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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff7f98b41a2da3578e790df894a867e943a0857e97661a8032b524a76ca3b438 [2024-12-02 12:39:10,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:39:10,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:39:10,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:39:10,975 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:39:10,975 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:39:10,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i [2024-12-02 12:39:13,655 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/data/fa7b9c4a2/8d9522c3b6cd4e448ca2fb59663c33ab/FLAG914dd93f9 [2024-12-02 12:39:13,855 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:39:13,855 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i [2024-12-02 12:39:13,860 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/data/fa7b9c4a2/8d9522c3b6cd4e448ca2fb59663c33ab/FLAG914dd93f9 [2024-12-02 12:39:14,221 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/data/fa7b9c4a2/8d9522c3b6cd4e448ca2fb59663c33ab [2024-12-02 12:39:14,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:39:14,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:39:14,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:39:14,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:39:14,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:39:14,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e32ad5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14, skipping insertion in model container [2024-12-02 12:39:14,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:39:14,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:39:14,350 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:39:14,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:39:14,373 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:39:14,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14 WrapperNode [2024-12-02 12:39:14,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:39:14,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:39:14,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:39:14,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:39:14,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,397 INFO L138 Inliner]: procedures = 11, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-12-02 12:39:14,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:39:14,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:39:14,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:39:14,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:39:14,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,407 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,417 INFO L175 MemorySlicer]: Split 7 memory accesses to 1 slices as follows [7]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2024-12-02 12:39:14,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,422 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,422 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:39:14,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:39:14,430 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:39:14,430 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:39:14,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (1/1) ... [2024-12-02 12:39:14,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:39:14,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:14,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:39:14,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:39:14,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:39:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:39:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:39:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:39:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:39:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure selectionSort [2024-12-02 12:39:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure selectionSort [2024-12-02 12:39:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 12:39:14,546 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:39:14,548 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:39:14,727 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2024-12-02 12:39:14,727 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:39:14,737 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:39:14,737 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:39:14,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:39:14 BoogieIcfgContainer [2024-12-02 12:39:14,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:39:14,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:39:14,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:39:14,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:39:14,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:39:14" (1/3) ... [2024-12-02 12:39:14,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30465724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:39:14, skipping insertion in model container [2024-12-02 12:39:14,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:39:14" (2/3) ... [2024-12-02 12:39:14,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30465724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:39:14, skipping insertion in model container [2024-12-02 12:39:14,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:39:14" (3/3) ... [2024-12-02 12:39:14,745 INFO L128 eAbstractionObserver]: Analyzing ICFG selectionSort_recursive.i [2024-12-02 12:39:14,756 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:39:14,757 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG selectionSort_recursive.i that has 2 procedures, 50 locations, 1 initial locations, 2 loop locations, and 18 error locations. [2024-12-02 12:39:14,786 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:39:14,797 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;@4d09b9f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:39:14,797 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-12-02 12:39:14,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:39:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-02 12:39:14,803 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:14,804 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-12-02 12:39:14,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:14,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:14,808 INFO L85 PathProgramCache]: Analyzing trace with hash 925632, now seen corresponding path program 1 times [2024-12-02 12:39:14,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:14,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036915847] [2024-12-02 12:39:14,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:14,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:14,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036915847] [2024-12-02 12:39:14,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036915847] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:14,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:14,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:39:14,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465666005] [2024-12-02 12:39:14,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:14,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:39:14,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:14,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:39:14,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:39:14,943 INFO L87 Difference]: Start difference. First operand has 50 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:14,998 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2024-12-02 12:39:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:39:15,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-12-02 12:39:15,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:15,005 INFO L225 Difference]: With dead ends: 51 [2024-12-02 12:39:15,005 INFO L226 Difference]: Without dead ends: 48 [2024-12-02 12:39:15,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:39:15,010 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:15,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:39:15,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-12-02 12:39:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-12-02 12:39:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 45 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:39:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-12-02 12:39:15,036 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 4 [2024-12-02 12:39:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:15,036 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-12-02 12:39:15,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-12-02 12:39:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 12:39:15,036 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:15,037 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:39:15,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:39:15,037 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:15,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash 889572299, now seen corresponding path program 1 times [2024-12-02 12:39:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:15,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975009203] [2024-12-02 12:39:15,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:15,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:15,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:15,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975009203] [2024-12-02 12:39:15,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975009203] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:15,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:15,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:39:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704785988] [2024-12-02 12:39:15,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:15,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:39:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:15,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:39:15,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:39:15,119 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:15,164 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2024-12-02 12:39:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:39:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-12-02 12:39:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:15,165 INFO L225 Difference]: With dead ends: 46 [2024-12-02 12:39:15,165 INFO L226 Difference]: Without dead ends: 46 [2024-12-02 12:39:15,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:39:15,166 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:15,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 65 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:39:15,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-12-02 12:39:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-12-02 12:39:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 43 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:39:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-12-02 12:39:15,172 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 6 [2024-12-02 12:39:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:15,172 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-12-02 12:39:15,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-12-02 12:39:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 12:39:15,172 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:15,172 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:39:15,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:39:15,173 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:15,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 889572300, now seen corresponding path program 1 times [2024-12-02 12:39:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513473995] [2024-12-02 12:39:15,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:15,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:15,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513473995] [2024-12-02 12:39:15,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513473995] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:15,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:15,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:39:15,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568904650] [2024-12-02 12:39:15,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:15,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:39:15,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:15,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:39:15,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:39:15,396 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:15,489 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2024-12-02 12:39:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:39:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-12-02 12:39:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:15,491 INFO L225 Difference]: With dead ends: 50 [2024-12-02 12:39:15,491 INFO L226 Difference]: Without dead ends: 50 [2024-12-02 12:39:15,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:39:15,492 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:15,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 128 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-12-02 12:39:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-12-02 12:39:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 46 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:39:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-12-02 12:39:15,497 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 6 [2024-12-02 12:39:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:15,498 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-12-02 12:39:15,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-12-02 12:39:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-02 12:39:15,498 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:15,498 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:15,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:39:15,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:15,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:15,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1649448325, now seen corresponding path program 1 times [2024-12-02 12:39:15,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:15,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461445430] [2024-12-02 12:39:15,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:15,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:15,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461445430] [2024-12-02 12:39:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461445430] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940360599] [2024-12-02 12:39:15,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:15,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:15,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:15,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:15,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:39:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:15,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 12:39:15,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:15,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2024-12-02 12:39:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:16,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:16,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940360599] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:16,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:16,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-12-02 12:39:16,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476373989] [2024-12-02 12:39:16,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:16,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 12:39:16,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:16,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 12:39:16,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:39:16,385 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:16,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:16,571 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-12-02 12:39:16,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:39:16,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-12-02 12:39:16,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:16,572 INFO L225 Difference]: With dead ends: 49 [2024-12-02 12:39:16,572 INFO L226 Difference]: Without dead ends: 49 [2024-12-02 12:39:16,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:39:16,573 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 16 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:16,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 210 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-12-02 12:39:16,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2024-12-02 12:39:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 43 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:39:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-12-02 12:39:16,578 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 10 [2024-12-02 12:39:16,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:16,578 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-12-02 12:39:16,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:16,579 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-12-02 12:39:16,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 12:39:16,579 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:16,579 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:16,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:39:16,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:16,780 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting selectionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:16,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1885001800, now seen corresponding path program 1 times [2024-12-02 12:39:16,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:16,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212255074] [2024-12-02 12:39:16,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:16,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:16,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:16,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212255074] [2024-12-02 12:39:16,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212255074] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:16,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:16,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:39:16,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050365927] [2024-12-02 12:39:16,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:16,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:39:16,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:16,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:39:16,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:39:16,844 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:16,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:16,922 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-12-02 12:39:16,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:39:16,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-12-02 12:39:16,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:16,924 INFO L225 Difference]: With dead ends: 40 [2024-12-02 12:39:16,924 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 12:39:16,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:39:16,925 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 44 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:16,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 49 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:16,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 12:39:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-12-02 12:39:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 37 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:39:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-12-02 12:39:16,930 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 14 [2024-12-02 12:39:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:16,930 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-12-02 12:39:16,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:16,931 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-12-02 12:39:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 12:39:16,931 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:16,931 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:16,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:39:16,931 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:16,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:16,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1885001801, now seen corresponding path program 1 times [2024-12-02 12:39:16,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:16,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543357363] [2024-12-02 12:39:16,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:16,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:17,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543357363] [2024-12-02 12:39:17,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543357363] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:17,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600558418] [2024-12-02 12:39:17,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:17,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:17,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:17,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:17,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:39:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:17,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:39:17,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:17,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:17,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600558418] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:17,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:17,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-12-02 12:39:17,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489116431] [2024-12-02 12:39:17,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:17,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:39:17,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:17,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:39:17,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:39:17,181 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:17,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:17,281 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2024-12-02 12:39:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:39:17,281 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-12-02 12:39:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:17,282 INFO L225 Difference]: With dead ends: 60 [2024-12-02 12:39:17,282 INFO L226 Difference]: Without dead ends: 60 [2024-12-02 12:39:17,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:39:17,283 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 15 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:17,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 298 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:17,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-12-02 12:39:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2024-12-02 12:39:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 46 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 12:39:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-12-02 12:39:17,289 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 14 [2024-12-02 12:39:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:17,289 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-12-02 12:39:17,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-12-02 12:39:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-02 12:39:17,290 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:17,290 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:17,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:39:17,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:17,491 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:17,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1694480489, now seen corresponding path program 1 times [2024-12-02 12:39:17,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:17,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036854175] [2024-12-02 12:39:17,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:17,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:39:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036854175] [2024-12-02 12:39:17,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036854175] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:17,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:17,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:39:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841741495] [2024-12-02 12:39:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:17,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:39:17,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:17,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:39:17,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:39:17,519 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:39:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:17,525 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2024-12-02 12:39:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:39:17,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-12-02 12:39:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:17,527 INFO L225 Difference]: With dead ends: 49 [2024-12-02 12:39:17,528 INFO L226 Difference]: Without dead ends: 49 [2024-12-02 12:39:17,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:39:17,528 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:17,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:39:17,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-12-02 12:39:17,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-12-02 12:39:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 12:39:17,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-12-02 12:39:17,533 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 15 [2024-12-02 12:39:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:17,533 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-12-02 12:39:17,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:39:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-12-02 12:39:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-02 12:39:17,534 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:17,534 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:17,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:39:17,534 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:17,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash -989287547, now seen corresponding path program 1 times [2024-12-02 12:39:17,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:17,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192766846] [2024-12-02 12:39:17,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:17,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:39:17,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192766846] [2024-12-02 12:39:17,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192766846] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:39:17,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669326570] [2024-12-02 12:39:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:17,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:39:17,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:17,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:39:17,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:39:17,564 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:39:17,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:17,575 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2024-12-02 12:39:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:39:17,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-12-02 12:39:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:17,578 INFO L225 Difference]: With dead ends: 48 [2024-12-02 12:39:17,578 INFO L226 Difference]: Without dead ends: 48 [2024-12-02 12:39:17,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:39:17,579 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:17,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:39:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-12-02 12:39:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-12-02 12:39:17,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 12:39:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2024-12-02 12:39:17,584 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 16 [2024-12-02 12:39:17,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:17,584 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2024-12-02 12:39:17,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:39:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2024-12-02 12:39:17,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 12:39:17,585 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:17,585 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:17,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:39:17,585 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:17,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:17,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1807689470, now seen corresponding path program 2 times [2024-12-02 12:39:17,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:17,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596589874] [2024-12-02 12:39:17,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:39:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:17,600 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:39:17,600 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 12:39:17,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:17,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596589874] [2024-12-02 12:39:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596589874] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:17,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:17,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:39:17,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943744298] [2024-12-02 12:39:17,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:17,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:39:17,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:17,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:39:17,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:39:17,795 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:18,008 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2024-12-02 12:39:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:39:18,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-12-02 12:39:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:18,009 INFO L225 Difference]: With dead ends: 73 [2024-12-02 12:39:18,009 INFO L226 Difference]: Without dead ends: 73 [2024-12-02 12:39:18,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:39:18,010 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:18,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 98 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-12-02 12:39:18,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2024-12-02 12:39:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 60 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 12:39:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2024-12-02 12:39:18,016 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 18 [2024-12-02 12:39:18,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:18,016 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2024-12-02 12:39:18,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:18,016 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2024-12-02 12:39:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 12:39:18,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:18,017 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:18,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:39:18,017 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:18,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:18,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1517558264, now seen corresponding path program 1 times [2024-12-02 12:39:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:18,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494974579] [2024-12-02 12:39:18,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:18,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:39:18,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494974579] [2024-12-02 12:39:18,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494974579] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:18,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:18,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:39:18,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115860030] [2024-12-02 12:39:18,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:18,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:39:18,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:18,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:39:18,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:39:18,088 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:39:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:18,114 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-12-02 12:39:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:39:18,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-12-02 12:39:18,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:18,115 INFO L225 Difference]: With dead ends: 64 [2024-12-02 12:39:18,115 INFO L226 Difference]: Without dead ends: 50 [2024-12-02 12:39:18,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:39:18,115 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:18,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:39:18,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-12-02 12:39:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2024-12-02 12:39:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 39 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-12-02 12:39:18,119 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 18 [2024-12-02 12:39:18,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:18,119 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-12-02 12:39:18,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:39:18,119 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-12-02 12:39:18,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-02 12:39:18,120 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:18,120 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:18,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:39:18,120 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:18,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash -203796296, now seen corresponding path program 1 times [2024-12-02 12:39:18,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70334706] [2024-12-02 12:39:18,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:18,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:18,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:18,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70334706] [2024-12-02 12:39:18,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70334706] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:18,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165653879] [2024-12-02 12:39:18,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:18,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:18,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:18,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:18,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:39:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:18,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:39:18,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:18,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:18,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165653879] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:18,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:18,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-12-02 12:39:18,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134997744] [2024-12-02 12:39:18,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:18,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 12:39:18,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:18,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 12:39:18,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:39:18,421 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:18,599 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2024-12-02 12:39:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:39:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-12-02 12:39:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:18,600 INFO L225 Difference]: With dead ends: 62 [2024-12-02 12:39:18,600 INFO L226 Difference]: Without dead ends: 62 [2024-12-02 12:39:18,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:39:18,601 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 148 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:18,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 157 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:18,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-12-02 12:39:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2024-12-02 12:39:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 41 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-12-02 12:39:18,604 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 19 [2024-12-02 12:39:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:18,605 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-12-02 12:39:18,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-12-02 12:39:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-02 12:39:18,605 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:18,605 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:18,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:39:18,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:18,806 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting selectionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:18,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash -203798728, now seen corresponding path program 1 times [2024-12-02 12:39:18,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:18,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973339444] [2024-12-02 12:39:18,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:18,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 12:39:18,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:18,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973339444] [2024-12-02 12:39:18,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973339444] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:18,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:18,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:39:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790327376] [2024-12-02 12:39:18,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:18,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:39:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:18,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:39:18,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:39:18,911 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:19,001 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2024-12-02 12:39:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:39:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-12-02 12:39:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:19,002 INFO L225 Difference]: With dead ends: 70 [2024-12-02 12:39:19,002 INFO L226 Difference]: Without dead ends: 70 [2024-12-02 12:39:19,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:39:19,003 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 67 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:19,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 105 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-12-02 12:39:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2024-12-02 12:39:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 53 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-12-02 12:39:19,006 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 19 [2024-12-02 12:39:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:19,006 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-12-02 12:39:19,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:19,006 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-12-02 12:39:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 12:39:19,007 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:19,007 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:19,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:39:19,007 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:19,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash -335767302, now seen corresponding path program 1 times [2024-12-02 12:39:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:19,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234857840] [2024-12-02 12:39:19,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:19,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 12:39:19,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:19,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234857840] [2024-12-02 12:39:19,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234857840] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:39:19,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:39:19,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:39:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888040151] [2024-12-02 12:39:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:39:19,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:39:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:19,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:39:19,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:39:19,111 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:19,169 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2024-12-02 12:39:19,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:39:19,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-02 12:39:19,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:19,170 INFO L225 Difference]: With dead ends: 68 [2024-12-02 12:39:19,170 INFO L226 Difference]: Without dead ends: 68 [2024-12-02 12:39:19,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:39:19,171 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:19,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 83 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:39:19,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-12-02 12:39:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2024-12-02 12:39:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 58 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-12-02 12:39:19,174 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 24 [2024-12-02 12:39:19,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:19,174 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-12-02 12:39:19,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:19,175 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-12-02 12:39:19,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 12:39:19,175 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:19,175 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:19,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:39:19,176 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting selectionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:19,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash -335769734, now seen corresponding path program 1 times [2024-12-02 12:39:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497506319] [2024-12-02 12:39:19,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:19,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:19,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497506319] [2024-12-02 12:39:19,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497506319] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:19,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520748081] [2024-12-02 12:39:19,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:19,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:19,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:19,300 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:19,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:39:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:19,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 12:39:19,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:19,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:19,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520748081] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:19,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:19,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2024-12-02 12:39:19,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557214887] [2024-12-02 12:39:19,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:19,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:39:19,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:19,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:39:19,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:39:19,515 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:19,698 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2024-12-02 12:39:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:39:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-02 12:39:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:19,699 INFO L225 Difference]: With dead ends: 119 [2024-12-02 12:39:19,700 INFO L226 Difference]: Without dead ends: 119 [2024-12-02 12:39:19,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2024-12-02 12:39:19,700 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 160 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:19,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 182 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-12-02 12:39:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 105. [2024-12-02 12:39:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 95 states have (on average 1.263157894736842) internal successors, (120), 100 states have internal predecessors, (120), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2024-12-02 12:39:19,706 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 24 [2024-12-02 12:39:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:19,706 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2024-12-02 12:39:19,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2024-12-02 12:39:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 12:39:19,707 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:19,707 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:19,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:39:19,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:19,908 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting selectionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:19,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:19,908 INFO L85 PathProgramCache]: Analyzing trace with hash -549829669, now seen corresponding path program 1 times [2024-12-02 12:39:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:19,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831955113] [2024-12-02 12:39:19,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:19,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 12:39:20,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:20,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831955113] [2024-12-02 12:39:20,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831955113] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:20,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291280842] [2024-12-02 12:39:20,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:20,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:20,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:20,049 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:20,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:39:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:20,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:39:20,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 12:39:20,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:20,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-12-02 12:39:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 12:39:20,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291280842] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:20,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:20,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-12-02 12:39:20,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498090743] [2024-12-02 12:39:20,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:20,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 12:39:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:20,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 12:39:20,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:39:20,349 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 21 states, 20 states have (on average 2.95) internal successors, (59), 18 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:20,796 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2024-12-02 12:39:20,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 12:39:20,797 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 18 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-12-02 12:39:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:20,798 INFO L225 Difference]: With dead ends: 134 [2024-12-02 12:39:20,798 INFO L226 Difference]: Without dead ends: 134 [2024-12-02 12:39:20,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 12:39:20,799 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 152 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:20,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 137 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-12-02 12:39:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 84. [2024-12-02 12:39:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 79 states have internal predecessors, (93), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2024-12-02 12:39:20,804 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 26 [2024-12-02 12:39:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:20,804 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2024-12-02 12:39:20,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 18 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:20,804 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2024-12-02 12:39:20,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 12:39:20,805 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:20,805 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 12:39:20,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:39:21,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 12:39:21,006 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:21,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1258045971, now seen corresponding path program 1 times [2024-12-02 12:39:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293952368] [2024-12-02 12:39:21,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:39:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293952368] [2024-12-02 12:39:21,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293952368] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293793939] [2024-12-02 12:39:21,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:21,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:21,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:21,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:21,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:39:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:21,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 12:39:21,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:39:21,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:39:21,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293793939] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:21,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:21,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2024-12-02 12:39:21,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597082688] [2024-12-02 12:39:21,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:21,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:39:21,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:21,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:39:21,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:39:21,391 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:21,473 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2024-12-02 12:39:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:39:21,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-12-02 12:39:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:21,474 INFO L225 Difference]: With dead ends: 76 [2024-12-02 12:39:21,474 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 12:39:21,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:39:21,474 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:21,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 181 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 12:39:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2024-12-02 12:39:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 50 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2024-12-02 12:39:21,476 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 34 [2024-12-02 12:39:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:21,476 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2024-12-02 12:39:21,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2024-12-02 12:39:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 12:39:21,477 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:21,478 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:21,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:39:21,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:21,678 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:21,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash 74655782, now seen corresponding path program 2 times [2024-12-02 12:39:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:21,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234615229] [2024-12-02 12:39:21,679 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:39:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:21,693 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:39:21,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:21,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234615229] [2024-12-02 12:39:21,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234615229] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228983648] [2024-12-02 12:39:21,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:39:21,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:21,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:21,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:21,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:39:21,894 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:39:21,895 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:21,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 12:39:21,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:21,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:22,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228983648] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:22,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:22,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-12-02 12:39:22,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730287134] [2024-12-02 12:39:22,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:22,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 12:39:22,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:22,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 12:39:22,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:39:22,083 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:22,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:22,289 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2024-12-02 12:39:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:39:22,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 12:39:22,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:22,290 INFO L225 Difference]: With dead ends: 65 [2024-12-02 12:39:22,290 INFO L226 Difference]: Without dead ends: 65 [2024-12-02 12:39:22,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-12-02 12:39:22,291 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 108 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:22,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 220 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:22,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-12-02 12:39:22,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2024-12-02 12:39:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 55 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2024-12-02 12:39:22,292 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 38 [2024-12-02 12:39:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:22,293 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2024-12-02 12:39:22,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2024-12-02 12:39:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 12:39:22,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:22,293 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:22,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:39:22,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 12:39:22,494 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:22,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:22,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1551189294, now seen corresponding path program 3 times [2024-12-02 12:39:22,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:22,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910800628] [2024-12-02 12:39:22,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:39:22,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:22,504 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:39:22,504 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 12:39:22,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910800628] [2024-12-02 12:39:22,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910800628] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207267412] [2024-12-02 12:39:22,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:39:22,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:22,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:22,822 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:22,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:39:22,878 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:39:22,878 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:22,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 12:39:22,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 12:39:23,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:23,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2024-12-02 12:39:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 12:39:23,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207267412] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:23,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:23,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-12-02 12:39:23,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326052797] [2024-12-02 12:39:23,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:23,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 12:39:23,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:23,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 12:39:23,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2024-12-02 12:39:23,673 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 29 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 23 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:24,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:24,019 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2024-12-02 12:39:24,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:39:24,020 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 23 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-12-02 12:39:24,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:24,020 INFO L225 Difference]: With dead ends: 63 [2024-12-02 12:39:24,020 INFO L226 Difference]: Without dead ends: 63 [2024-12-02 12:39:24,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 12:39:24,021 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 185 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:24,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 144 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:39:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-12-02 12:39:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2024-12-02 12:39:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 55 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2024-12-02 12:39:24,023 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 43 [2024-12-02 12:39:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:24,024 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2024-12-02 12:39:24,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 23 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2024-12-02 12:39:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 12:39:24,024 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:24,024 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:24,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:39:24,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 12:39:24,225 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting selectionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:24,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash -842227864, now seen corresponding path program 1 times [2024-12-02 12:39:24,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:24,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724014859] [2024-12-02 12:39:24,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:39:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724014859] [2024-12-02 12:39:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724014859] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319034802] [2024-12-02 12:39:24,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:24,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:24,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:24,371 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:24,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:39:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:24,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 12:39:24,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:39:24,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:24,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29 treesize of output 25 [2024-12-02 12:39:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:39:24,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319034802] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:24,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:24,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-12-02 12:39:24,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645490249] [2024-12-02 12:39:24,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:24,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 12:39:24,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:24,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 12:39:24,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:39:24,764 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:25,133 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2024-12-02 12:39:25,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:39:25,134 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-12-02 12:39:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:25,135 INFO L225 Difference]: With dead ends: 88 [2024-12-02 12:39:25,135 INFO L226 Difference]: Without dead ends: 88 [2024-12-02 12:39:25,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 12:39:25,135 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 165 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:25,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 242 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:39:25,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-02 12:39:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 56. [2024-12-02 12:39:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 53 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-12-02 12:39:25,137 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 44 [2024-12-02 12:39:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:25,137 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-12-02 12:39:25,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-12-02 12:39:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 12:39:25,138 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:25,138 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:25,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:39:25,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:25,339 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:25,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash -836878160, now seen corresponding path program 4 times [2024-12-02 12:39:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633020415] [2024-12-02 12:39:25,339 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:39:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:25,350 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:39:25,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 12:39:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633020415] [2024-12-02 12:39:25,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633020415] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992884739] [2024-12-02 12:39:25,463 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:39:25,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:25,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:25,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:25,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:39:25,526 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:39:25,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:25,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 12:39:25,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 12:39:25,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 12:39:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992884739] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:25,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-12-02 12:39:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627552647] [2024-12-02 12:39:25,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:25,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:39:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:25,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:39:25,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:39:25,655 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:25,759 INFO L93 Difference]: Finished difference Result 117 states and 138 transitions. [2024-12-02 12:39:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:39:25,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 12:39:25,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:25,760 INFO L225 Difference]: With dead ends: 117 [2024-12-02 12:39:25,760 INFO L226 Difference]: Without dead ends: 117 [2024-12-02 12:39:25,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:39:25,760 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:25,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 159 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:25,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-12-02 12:39:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 91. [2024-12-02 12:39:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.223529411764706) internal successors, (104), 87 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2024-12-02 12:39:25,764 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 48 [2024-12-02 12:39:25,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:25,764 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2024-12-02 12:39:25,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:25,765 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2024-12-02 12:39:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 12:39:25,765 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:25,765 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:25,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:39:25,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:25,966 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:25,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash -173416758, now seen corresponding path program 1 times [2024-12-02 12:39:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:25,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296806199] [2024-12-02 12:39:25,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:39:26,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:26,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296806199] [2024-12-02 12:39:26,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296806199] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:26,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896717468] [2024-12-02 12:39:26,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:26,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:26,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:26,144 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:26,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:39:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:26,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 12:39:26,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:39:26,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:26,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29 treesize of output 25 [2024-12-02 12:39:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:39:26,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896717468] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:26,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:26,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-12-02 12:39:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183168041] [2024-12-02 12:39:26,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:26,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 12:39:26,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:26,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 12:39:26,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:39:26,525 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 23 states, 22 states have (on average 4.454545454545454) internal successors, (98), 17 states have internal predecessors, (98), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:26,724 INFO L93 Difference]: Finished difference Result 95 states and 109 transitions. [2024-12-02 12:39:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:39:26,724 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.454545454545454) internal successors, (98), 17 states have internal predecessors, (98), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-12-02 12:39:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:26,725 INFO L225 Difference]: With dead ends: 95 [2024-12-02 12:39:26,725 INFO L226 Difference]: Without dead ends: 71 [2024-12-02 12:39:26,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2024-12-02 12:39:26,725 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 116 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:26,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 144 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-12-02 12:39:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-12-02 12:39:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-12-02 12:39:26,727 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 49 [2024-12-02 12:39:26,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:26,727 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-12-02 12:39:26,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.454545454545454) internal successors, (98), 17 states have internal predecessors, (98), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:26,727 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-12-02 12:39:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 12:39:26,727 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:26,727 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:26,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:39:26,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 12:39:26,928 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:26,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash 873426012, now seen corresponding path program 5 times [2024-12-02 12:39:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081524251] [2024-12-02 12:39:26,928 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:39:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:26,952 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-12-02 12:39:26,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 12:39:27,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081524251] [2024-12-02 12:39:27,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081524251] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648620818] [2024-12-02 12:39:27,102 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:39:27,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:27,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:27,104 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:27,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:39:27,181 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-12-02 12:39:27,181 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:27,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 12:39:27,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 12:39:27,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 12:39:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648620818] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:27,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:27,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2024-12-02 12:39:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160257736] [2024-12-02 12:39:27,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:27,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:39:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:27,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:39:27,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:39:27,343 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:27,455 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2024-12-02 12:39:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:39:27,458 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-12-02 12:39:27,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:27,458 INFO L225 Difference]: With dead ends: 85 [2024-12-02 12:39:27,458 INFO L226 Difference]: Without dead ends: 70 [2024-12-02 12:39:27,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 92 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:39:27,460 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:27,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 212 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:39:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-12-02 12:39:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-12-02 12:39:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 64 states have (on average 1.171875) internal successors, (75), 64 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2024-12-02 12:39:27,462 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 53 [2024-12-02 12:39:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:27,462 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2024-12-02 12:39:27,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2024-12-02 12:39:27,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 12:39:27,463 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:27,463 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:27,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 12:39:27,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 12:39:27,663 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-12-02 12:39:27,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:27,664 INFO L85 PathProgramCache]: Analyzing trace with hash 235699587, now seen corresponding path program 6 times [2024-12-02 12:39:27,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:27,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863816602] [2024-12-02 12:39:27,664 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:39:27,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:27,679 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 12:39:27,679 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 12:39:28,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:28,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863816602] [2024-12-02 12:39:28,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863816602] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:28,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094572709] [2024-12-02 12:39:28,037 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:39:28,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:28,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:28,039 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:28,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 12:39:28,098 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 12:39:28,098 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:39:28,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 12:39:28,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 12:39:28,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:29,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2024-12-02 12:39:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 12:39:29,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094572709] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:29,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:29,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-12-02 12:39:29,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091652401] [2024-12-02 12:39:29,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:29,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 12:39:29,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:29,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 12:39:29,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 12:39:29,192 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 35 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 29 states have internal predecessors, (107), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:29,656 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2024-12-02 12:39:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:39:29,656 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 29 states have internal predecessors, (107), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-12-02 12:39:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:29,656 INFO L225 Difference]: With dead ends: 74 [2024-12-02 12:39:29,656 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 12:39:29,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=1618, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 12:39:29,658 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 156 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:29,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 180 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:39:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 12:39:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 12:39:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 12:39:29,658 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2024-12-02 12:39:29,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:29,658 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 12:39:29,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 29 states have internal predecessors, (107), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 12:39:29,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 12:39:29,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (15 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (14 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (13 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (12 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-12-02 12:39:29,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-12-02 12:39:29,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-12-02 12:39:29,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-12-02 12:39:29,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-12-02 12:39:29,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-12-02 12:39:29,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-12-02 12:39:29,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-12-02 12:39:29,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 12:39:29,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 12:39:29,864 INFO L422 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:29,866 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:39:29,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:39:29 BoogieIcfgContainer [2024-12-02 12:39:29,868 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:39:29,868 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:39:29,868 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:39:29,869 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:39:29,869 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:39:14" (3/4) ... [2024-12-02 12:39:29,870 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 12:39:29,874 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure selectionSort [2024-12-02 12:39:29,876 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-12-02 12:39:29,876 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-12-02 12:39:29,876 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-02 12:39:29,876 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 12:39:29,945 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 12:39:29,945 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 12:39:29,945 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:39:29,946 INFO L158 Benchmark]: Toolchain (without parser) took 15721.37ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 93.4MB in the beginning and 153.7MB in the end (delta: -60.3MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2024-12-02 12:39:29,946 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 73.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:39:29,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.43ms. Allocated memory is still 117.4MB. Free memory was 93.2MB in the beginning and 82.5MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:39:29,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.98ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 81.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:39:29,946 INFO L158 Benchmark]: Boogie Preprocessor took 31.61ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.0MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:39:29,947 INFO L158 Benchmark]: RCFGBuilder took 308.01ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 66.1MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:39:29,947 INFO L158 Benchmark]: TraceAbstraction took 15129.02ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 65.6MB in the beginning and 159.2MB in the end (delta: -93.7MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2024-12-02 12:39:29,947 INFO L158 Benchmark]: Witness Printer took 76.55ms. Allocated memory is still 218.1MB. Free memory was 159.2MB in the beginning and 153.7MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:39:29,949 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 73.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.43ms. Allocated memory is still 117.4MB. Free memory was 93.2MB in the beginning and 82.5MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.98ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 81.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.61ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.0MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 308.01ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 66.1MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 15129.02ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 65.6MB in the beginning and 159.2MB in the end (delta: -93.7MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Witness Printer took 76.55ms. Allocated memory is still 218.1MB. Free memory was 159.2MB in the beginning and 153.7MB in the end (delta: 5.5MB). 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 42]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 42]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 42]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 26]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 50 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1590 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1584 mSDsluCounter, 3299 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2658 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3824 IncrementalHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 641 mSDtfsCounter, 3824 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1141 GetRequests, 760 SyntacticMatches, 36 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=14, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 217 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 1058 NumberOfCodeBlocks, 968 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 1468 ConstructedInterpolants, 0 QuantifiedInterpolants, 11107 SizeOfPredicates, 88 NumberOfNonLiveVariables, 1762 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 49 InterpolantComputations, 10 PerfectInterpolantSequences, 665/1028 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 12:39:29,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18f9969d-b381-4da0-83a6-b5ddb1995ffc/bin/uautomizer-verify-84ZbGMXZE1/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 Result: TRUE