./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:11:29,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:11:29,598 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2024-11-28 04:11:29,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:11:29,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:11:29,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:11:29,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:11:29,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:11:29,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:11:29,665 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:11:29,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:11:29,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:11:29,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:11:29,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:11:29,668 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:11:29,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:11:29,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:11:29,668 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:11:29,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:11:29,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:11:29,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:11:29,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:11:29,669 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:11:29,669 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:11:29,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:11:29,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:11:29,670 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:11:29,671 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:11:29,671 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:11:29,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:11:29,672 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:11:29,672 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:11:29,672 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:11:29,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:11:29,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:11:29,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:11:29,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:11:29,673 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:11:29,673 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:11:29,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:11:29,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:11:29,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:11:29,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:11:29,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:11:29,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:11:29,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:11:29,674 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:11:29,674 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:11:29,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:11:29,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:11:29,675 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_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2024-11-28 04:11:30,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:11:30,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:11:30,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:11:30,100 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:11:30,101 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:11:30,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2024-11-28 04:11:33,415 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/data/041ae20cb/fb15e4a20dd0443cab2bb93ee30c0b1e/FLAG58abd1ddd [2024-11-28 04:11:33,896 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:11:33,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2024-11-28 04:11:33,924 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/data/041ae20cb/fb15e4a20dd0443cab2bb93ee30c0b1e/FLAG58abd1ddd [2024-11-28 04:11:33,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/data/041ae20cb/fb15e4a20dd0443cab2bb93ee30c0b1e [2024-11-28 04:11:33,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:11:33,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:11:34,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:11:34,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:11:34,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:11:34,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:11:33" (1/1) ... [2024-11-28 04:11:34,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62022e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34, skipping insertion in model container [2024-11-28 04:11:34,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:11:33" (1/1) ... [2024-11-28 04:11:34,066 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:11:34,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:11:34,558 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:11:34,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:11:34,679 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:11:34,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34 WrapperNode [2024-11-28 04:11:34,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:11:34,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:11:34,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:11:34,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:11:34,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,742 INFO L138 Inliner]: procedures = 119, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2024-11-28 04:11:34,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:11:34,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:11:34,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:11:34,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:11:34,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,796 INFO L175 MemorySlicer]: Split 24 memory accesses to 2 slices as follows [2, 22]. 92 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 11 writes are split as follows [0, 11]. [2024-11-28 04:11:34,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,812 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:11:34,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:11:34,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:11:34,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:11:34,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (1/1) ... [2024-11-28 04:11:34,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:11:34,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:34,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:11:34,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:11:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-28 04:11:34,922 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-28 04:11:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:11:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:11:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:11:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:11:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:11:35,086 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:11:35,090 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:11:35,429 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-28 04:11:35,430 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:11:35,447 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:11:35,448 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 04:11:35,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:11:35 BoogieIcfgContainer [2024-11-28 04:11:35,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:11:35,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:11:35,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:11:35,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:11:35,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:11:33" (1/3) ... [2024-11-28 04:11:35,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f87a4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:11:35, skipping insertion in model container [2024-11-28 04:11:35,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:34" (2/3) ... [2024-11-28 04:11:35,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f87a4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:11:35, skipping insertion in model container [2024-11-28 04:11:35,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:11:35" (3/3) ... [2024-11-28 04:11:35,465 INFO L128 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2024-11-28 04:11:35,484 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:11:35,486 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-rb-sentinel-2.i that has 2 procedures, 42 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2024-11-28 04:11:35,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:11:35,556 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;@13e5dc4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:11:35,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:11:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 36 states have internal predecessors, (58), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:11:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:11:35,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:35,572 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:35,573 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:35,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:35,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1239716389, now seen corresponding path program 1 times [2024-11-28 04:11:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:35,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321351189] [2024-11-28 04:11:35,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:35,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321351189] [2024-11-28 04:11:35,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321351189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:35,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:35,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:11:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569682981] [2024-11-28 04:11:35,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:35,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:11:35,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:35,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:11:35,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:11:35,843 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 36 states have internal predecessors, (58), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-28 04:11:35,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:35,859 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-28 04:11:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:11:35,861 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 8 [2024-11-28 04:11:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:35,868 INFO L225 Difference]: With dead ends: 36 [2024-11-28 04:11:35,868 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 04:11:35,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:11:35,875 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:35,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 04:11:35,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-28 04:11:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 32 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-28 04:11:35,914 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 8 [2024-11-28 04:11:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:35,914 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-28 04:11:35,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-28 04:11:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-28 04:11:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:11:35,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:35,915 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:35,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:11:35,916 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:35,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:35,917 INFO L85 PathProgramCache]: Analyzing trace with hash -556587122, now seen corresponding path program 1 times [2024-11-28 04:11:35,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:35,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8895955] [2024-11-28 04:11:35,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:35,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:36,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8895955] [2024-11-28 04:11:36,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8895955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:36,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:36,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:11:36,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192576578] [2024-11-28 04:11:36,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:36,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:36,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:36,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:36,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:11:36,181 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-28 04:11:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:36,337 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2024-11-28 04:11:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:36,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-11-28 04:11:36,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:36,339 INFO L225 Difference]: With dead ends: 44 [2024-11-28 04:11:36,340 INFO L226 Difference]: Without dead ends: 44 [2024-11-28 04:11:36,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:36,341 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 46 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:36,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 46 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-28 04:11:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-11-28 04:11:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-28 04:11:36,352 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 9 [2024-11-28 04:11:36,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:36,352 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-28 04:11:36,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-28 04:11:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-28 04:11:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 04:11:36,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:36,353 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:36,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:11:36,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:36,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:36,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2117303421, now seen corresponding path program 1 times [2024-11-28 04:11:36,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:36,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768349848] [2024-11-28 04:11:36,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:36,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:36,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:36,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768349848] [2024-11-28 04:11:36,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768349848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:36,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:36,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:11:36,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340184434] [2024-11-28 04:11:36,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:36,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:11:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:36,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:11:36,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:36,876 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-28 04:11:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:37,181 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2024-11-28 04:11:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:11:37,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 12 [2024-11-28 04:11:37,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:37,183 INFO L225 Difference]: With dead ends: 71 [2024-11-28 04:11:37,184 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 04:11:37,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:11:37,185 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 49 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:37,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 96 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:11:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 04:11:37,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46. [2024-11-28 04:11:37,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 44 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:37,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2024-11-28 04:11:37,192 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 12 [2024-11-28 04:11:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:37,193 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2024-11-28 04:11:37,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-28 04:11:37,193 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2024-11-28 04:11:37,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:11:37,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:37,194 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:37,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:11:37,195 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:37,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:37,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1584302309, now seen corresponding path program 1 times [2024-11-28 04:11:37,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:37,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287086675] [2024-11-28 04:11:37,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:37,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:38,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:38,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287086675] [2024-11-28 04:11:38,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287086675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:38,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284374268] [2024-11-28 04:11:38,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:38,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:38,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:38,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:38,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:11:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:38,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:11:38,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:38,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-28 04:11:38,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:38,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-11-28 04:11:38,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:11:38,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2024-11-28 04:11:38,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:38,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-28 04:11:38,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-28 04:11:38,695 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:11:38,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:11:38,778 INFO L349 Elim1Store]: treesize reduction 14, result has 39.1 percent of original size [2024-11-28 04:11:38,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-28 04:11:38,791 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 8 treesize of output 7 [2024-11-28 04:11:38,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2024-11-28 04:11:38,860 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 8 treesize of output 7 [2024-11-28 04:11:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:39,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:39,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:39,447 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2024-11-28 04:11:39,591 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int)) (v_ArrVal_206 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.base_31| Int) (|v_ULTIMATE.start_main_~end~0#1.base_32| Int) (v_arrayElimArr_1 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_32|) 0)) (not (= (select v_arrayElimArr_1 4) 1)) (not (= v_ArrVal_205 (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| (select v_ArrVal_205 |c_ULTIMATE.start_main_~end~0#1.offset|)))) (= (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_205) |v_ULTIMATE.start_main_~end~0#1.base_32| v_ArrVal_206) |v_ULTIMATE.start_main_~end~0#1.base_31| v_arrayElimArr_1) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) 1))) is different from false [2024-11-28 04:11:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 04:11:39,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284374268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:39,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:39,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-28 04:11:39,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743132392] [2024-11-28 04:11:39,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:39,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:11:39,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:39,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:11:39,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=138, Unknown=8, NotChecked=24, Total=210 [2024-11-28 04:11:39,708 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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) [2024-11-28 04:11:40,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:40,472 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2024-11-28 04:11:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:11:40,474 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 16 [2024-11-28 04:11:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:40,475 INFO L225 Difference]: With dead ends: 55 [2024-11-28 04:11:40,477 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 04:11:40,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=270, Unknown=10, NotChecked=36, Total=420 [2024-11-28 04:11:40,478 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 108 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:40,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 145 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 190 Invalid, 0 Unknown, 52 Unchecked, 0.4s Time] [2024-11-28 04:11:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 04:11:40,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2024-11-28 04:11:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-28 04:11:40,491 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 16 [2024-11-28 04:11:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:40,491 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-28 04:11:40,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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) [2024-11-28 04:11:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-28 04:11:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 04:11:40,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:40,493 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:40,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:11:40,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:40,698 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:40,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1479338505, now seen corresponding path program 1 times [2024-11-28 04:11:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:40,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083325957] [2024-11-28 04:11:40,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:40,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:40,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:40,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083325957] [2024-11-28 04:11:40,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083325957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:40,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:40,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:11:40,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105462527] [2024-11-28 04:11:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:40,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:11:40,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:40,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:11:40,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:40,816 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-28 04:11:40,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:40,931 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-28 04:11:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:11:40,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 17 [2024-11-28 04:11:40,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:40,934 INFO L225 Difference]: With dead ends: 37 [2024-11-28 04:11:40,934 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 04:11:40,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:40,936 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:40,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 99 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 04:11:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-28 04:11:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-28 04:11:40,944 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 17 [2024-11-28 04:11:40,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:40,946 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-28 04:11:40,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-28 04:11:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-28 04:11:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:11:40,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:40,948 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:40,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:11:40,948 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:40,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash 279629393, now seen corresponding path program 1 times [2024-11-28 04:11:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:40,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883518950] [2024-11-28 04:11:40,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:40,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:41,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883518950] [2024-11-28 04:11:41,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883518950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151642276] [2024-11-28 04:11:41,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:41,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:41,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:41,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:41,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:11:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:41,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:11:41,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:41,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 39 [2024-11-28 04:11:41,415 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2024-11-28 04:11:41,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 39 [2024-11-28 04:11:41,460 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2024-11-28 04:11:41,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 39 [2024-11-28 04:11:41,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 24 [2024-11-28 04:11:41,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:11:41,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 39 [2024-11-28 04:11:41,529 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:11:41,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 24 [2024-11-28 04:11:41,549 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:11:41,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:11:42,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:42,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 110 [2024-11-28 04:11:42,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2024-11-28 04:11:42,671 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 37 treesize of output 35 [2024-11-28 04:11:42,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 04:11:42,710 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:11:42,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 04:11:42,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:11:42,747 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 11 treesize of output 7 [2024-11-28 04:11:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:42,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:42,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151642276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:42,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:42,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 04:11:42,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877892742] [2024-11-28 04:11:42,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:42,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:11:42,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:42,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:11:42,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:11:42,859 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2024-11-28 04:11:43,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:43,545 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-11-28 04:11:43,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:11:43,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 21 [2024-11-28 04:11:43,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:43,547 INFO L225 Difference]: With dead ends: 53 [2024-11-28 04:11:43,547 INFO L226 Difference]: Without dead ends: 53 [2024-11-28 04:11:43,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:11:43,548 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 34 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:43,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 109 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 3 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:11:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-28 04:11:43,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-11-28 04:11:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.2) internal successors, (54), 47 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-28 04:11:43,559 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 21 [2024-11-28 04:11:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:43,563 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-28 04:11:43,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2024-11-28 04:11:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-28 04:11:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:11:43,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:43,564 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:43,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:11:43,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:43,765 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:43,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash -612387063, now seen corresponding path program 1 times [2024-11-28 04:11:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836762415] [2024-11-28 04:11:43,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:11:44,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:44,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836762415] [2024-11-28 04:11:44,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836762415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557983656] [2024-11-28 04:11:44,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:44,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:44,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:44,076 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:44,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:11:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:44,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:11:44,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:44,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 29 [2024-11-28 04:11:44,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 37 [2024-11-28 04:11:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:11:44,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:11:44,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557983656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:44,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:44,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 11 [2024-11-28 04:11:44,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245279426] [2024-11-28 04:11:44,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:44,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:11:44,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:44,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:11:44,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:11:44,949 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2024-11-28 04:11:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:45,291 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2024-11-28 04:11:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:11:45,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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 21 [2024-11-28 04:11:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:45,293 INFO L225 Difference]: With dead ends: 58 [2024-11-28 04:11:45,293 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 04:11:45,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:11:45,294 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:45,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 157 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:11:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 04:11:45,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2024-11-28 04:11:45,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 50 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-11-28 04:11:45,303 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 21 [2024-11-28 04:11:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:45,303 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-11-28 04:11:45,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2024-11-28 04:11:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-11-28 04:11:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:11:45,307 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:45,307 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:45,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:11:45,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:45,511 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:45,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash -612446645, now seen corresponding path program 1 times [2024-11-28 04:11:45,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:45,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698872554] [2024-11-28 04:11:45,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:45,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:45,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:45,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698872554] [2024-11-28 04:11:45,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698872554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:45,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094107366] [2024-11-28 04:11:45,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:45,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:45,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:45,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:45,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:11:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:45,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:11:45,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:45,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:11:45,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 04:11:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:11:45,947 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:45,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094107366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:45,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:45,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-28 04:11:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127596635] [2024-11-28 04:11:45,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:45,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:45,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:45,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:11:45,950 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-28 04:11:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:46,035 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-11-28 04:11:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:46,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2024-11-28 04:11:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:46,036 INFO L225 Difference]: With dead ends: 53 [2024-11-28 04:11:46,036 INFO L226 Difference]: Without dead ends: 53 [2024-11-28 04:11:46,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:11:46,037 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:46,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 85 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:46,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-28 04:11:46,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-11-28 04:11:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.1875) internal successors, (57), 50 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2024-11-28 04:11:46,042 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 21 [2024-11-28 04:11:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:46,042 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2024-11-28 04:11:46,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-28 04:11:46,042 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2024-11-28 04:11:46,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:11:46,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:46,043 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:46,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:46,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:46,244 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:46,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:46,244 INFO L85 PathProgramCache]: Analyzing trace with hash 581929515, now seen corresponding path program 1 times [2024-11-28 04:11:46,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:46,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39674247] [2024-11-28 04:11:46,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:46,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:47,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39674247] [2024-11-28 04:11:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39674247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:47,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425363720] [2024-11-28 04:11:47,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:47,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:47,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:47,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:47,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:11:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:47,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:11:47,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:47,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-28 04:11:47,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:47,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-11-28 04:11:47,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-28 04:11:47,293 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 04:11:47,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 04:11:47,300 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 5 treesize of output 3 [2024-11-28 04:11:47,318 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:11:47,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:11:47,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-28 04:11:47,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 04:11:47,393 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 04:11:47,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 68 [2024-11-28 04:11:47,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 04:11:47,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 04:11:47,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-28 04:11:47,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 04:11:47,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:11:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:47,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:47,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2024-11-28 04:11:47,846 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_504 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_504) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) |c_ULTIMATE.start_main_~end~0#1.base|)) (forall ((v_ArrVal_506 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_506) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) |c_ULTIMATE.start_main_~end~0#1.offset|))) is different from false [2024-11-28 04:11:47,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:47,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2024-11-28 04:11:47,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:47,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-28 04:11:47,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:47,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2024-11-28 04:11:47,889 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 27 [2024-11-28 04:11:47,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:47,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2024-11-28 04:11:47,911 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 35 treesize of output 33 [2024-11-28 04:11:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:48,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425363720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:48,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:48,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2024-11-28 04:11:48,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169396412] [2024-11-28 04:11:48,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:48,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:11:48,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:48,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:11:48,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=405, Unknown=1, NotChecked=40, Total=506 [2024-11-28 04:11:48,048 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2024-11-28 04:11:49,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:49,142 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2024-11-28 04:11:49,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:11:49,143 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 25 [2024-11-28 04:11:49,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:49,144 INFO L225 Difference]: With dead ends: 89 [2024-11-28 04:11:49,146 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 04:11:49,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=221, Invalid=838, Unknown=1, NotChecked=62, Total=1122 [2024-11-28 04:11:49,148 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 172 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:49,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 349 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 370 Invalid, 0 Unknown, 82 Unchecked, 0.5s Time] [2024-11-28 04:11:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 04:11:49,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2024-11-28 04:11:49,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 65 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2024-11-28 04:11:49,153 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 25 [2024-11-28 04:11:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:49,153 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2024-11-28 04:11:49,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2024-11-28 04:11:49,154 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2024-11-28 04:11:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:11:49,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:49,155 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:49,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:11:49,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:49,359 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:11:49,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:49,360 INFO L85 PathProgramCache]: Analyzing trace with hash -235718935, now seen corresponding path program 1 times [2024-11-28 04:11:49,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:49,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041177043] [2024-11-28 04:11:49,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:49,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:50,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:50,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041177043] [2024-11-28 04:11:50,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041177043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:50,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489919078] [2024-11-28 04:11:50,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:50,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:50,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:50,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:50,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:11:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:50,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 04:11:50,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:50,461 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 04:11:50,462 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 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-28 04:11:50,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-28 04:11:50,551 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 04:11:50,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 04:11:50,559 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 5 treesize of output 3 [2024-11-28 04:11:50,603 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2024-11-28 04:11:50,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2024-11-28 04:11:50,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-28 04:11:50,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 04:11:50,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:50,743 INFO L349 Elim1Store]: treesize reduction 33, result has 29.8 percent of original size [2024-11-28 04:11:50,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 54 [2024-11-28 04:11:50,762 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 20 treesize of output 1 [2024-11-28 04:11:50,800 INFO L349 Elim1Store]: treesize reduction 20, result has 67.2 percent of original size [2024-11-28 04:11:50,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 53 [2024-11-28 04:11:50,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 23 [2024-11-28 04:11:50,829 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 12 treesize of output 11 [2024-11-28 04:11:51,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:51,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 04:11:51,352 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:11:51,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 27 [2024-11-28 04:11:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:51,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:51,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:51,461 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2024-11-28 04:11:51,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:51,472 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2024-11-28 04:11:51,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:51,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 65 [2024-11-28 04:11:51,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:51,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2024-11-28 04:11:51,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:51,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 1632 treesize of output 1245 [2024-11-28 04:11:51,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:51,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1443 treesize of output 1410 [2024-11-28 04:11:51,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:51,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1401 treesize of output 1387 [2024-11-28 04:11:51,955 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 1375 treesize of output 1335 [2024-11-28 04:11:52,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:52,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1121 treesize of output 1097 [2024-11-28 04:11:52,258 INFO L349 Elim1Store]: treesize reduction 8, result has 90.1 percent of original size [2024-11-28 04:11:52,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1298 treesize of output 1124 [2024-11-28 04:14:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:56,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489919078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:56,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:56,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-11-28 04:14:56,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448668368] [2024-11-28 04:14:56,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:56,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:14:56,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:56,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:14:56,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:14:56,267 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 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) [2024-11-28 04:14:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:58,258 INFO L93 Difference]: Finished difference Result 159 states and 190 transitions. [2024-11-28 04:14:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:14:58,259 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 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 25 [2024-11-28 04:14:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:58,260 INFO L225 Difference]: With dead ends: 159 [2024-11-28 04:14:58,260 INFO L226 Difference]: Without dead ends: 159 [2024-11-28 04:14:58,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:14:58,262 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 234 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 22 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:58,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 332 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 529 Invalid, 30 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:14:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-28 04:14:58,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2024-11-28 04:14:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.168421052631579) internal successors, (111), 97 states have internal predecessors, (111), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2024-11-28 04:14:58,270 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 25 [2024-11-28 04:14:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:58,270 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2024-11-28 04:14:58,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 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) [2024-11-28 04:14:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2024-11-28 04:14:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 04:14:58,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:58,271 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:58,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:58,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:14:58,475 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:14:58,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1331514946, now seen corresponding path program 2 times [2024-11-28 04:14:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:58,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233130309] [2024-11-28 04:14:58,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:58,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:58,498 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:58,498 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:58,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233130309] [2024-11-28 04:14:58,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233130309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097939079] [2024-11-28 04:14:58,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:58,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:58,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:58,653 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:58,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:14:58,781 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:58,781 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:58,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:14:58,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:58,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 37 [2024-11-28 04:14:58,802 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2024-11-28 04:14:58,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2024-11-28 04:14:58,825 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2024-11-28 04:14:58,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 43 [2024-11-28 04:14:58,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 28 [2024-11-28 04:14:58,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 04:14:58,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2024-11-28 04:14:58,870 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:14:58,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 28 [2024-11-28 04:14:58,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:14:58,885 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:14:58,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 04:14:58,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:14:58,904 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:14:58,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 04:14:58,926 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:14:58,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 7 [2024-11-28 04:14:58,941 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse5 (= |c_ULTIMATE.start_main_~null~0#1.base| |c_ULTIMATE.start_main_~list~0#1.base|))) (let ((.cse0 (not .cse5)) (.cse4 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (and (or (and (= |c_ULTIMATE.start_main_~null~0#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) .cse0) (and (let ((.cse1 (= |c_ULTIMATE.start_main_~list~0#1.offset| |c_ULTIMATE.start_main_~null~0#1.offset|)) (.cse3 (= .cse4 |c_ULTIMATE.start_main_~null~0#1.offset|)) (.cse2 (= |c_ULTIMATE.start_main_~null~0#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~null~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (or (and .cse1 .cse2) (and (not .cse1) (not .cse3) .cse2) (and .cse3 .cse2))) .cse5)) (or (and .cse0 (exists ((v_arrayElimArr_22 (Array Int Int)) (v_DerPreprocessor_8 (Array Int Int))) (and (let ((.cse6 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|))) (= (store (store (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_DerPreprocessor_8) |c_ULTIMATE.start_main_~null~0#1.base| v_arrayElimArr_22) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset| |c_ULTIMATE.start_main_~null~0#1.offset|) .cse4 (select .cse6 .cse4)) .cse6)) (= (select v_arrayElimArr_22 |c_ULTIMATE.start_main_~null~0#1.offset|) 0)))) (and (exists ((v_DerPreprocessor_6 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_DerPreprocessor_6) |c_ULTIMATE.start_main_~null~0#1.base| v_arrayElimArr_20) |c_ULTIMATE.start_main_~list~0#1.base|))) (and (= (select v_arrayElimArr_20 |c_ULTIMATE.start_main_~null~0#1.offset|) 0) (= .cse7 v_DerPreprocessor_6) (let ((.cse8 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~null~0#1.base|))) (= (store (store .cse7 |c_ULTIMATE.start_main_~list~0#1.offset| |c_ULTIMATE.start_main_~null~0#1.offset|) .cse4 (select .cse8 .cse4)) .cse8))))) .cse5))))) is different from true [2024-11-28 04:14:59,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:14:59,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 126 [2024-11-28 04:14:59,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 58 [2024-11-28 04:14:59,451 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 41 treesize of output 39 [2024-11-28 04:14:59,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:14:59,503 INFO L349 Elim1Store]: treesize reduction 32, result has 30.4 percent of original size [2024-11-28 04:14:59,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2024-11-28 04:14:59,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2024-11-28 04:14:59,570 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 11 treesize of output 7 [2024-11-28 04:14:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:14:59,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:14:59,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097939079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:59,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:59,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-11-28 04:14:59,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644548913] [2024-11-28 04:14:59,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:59,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:14:59,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:59,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:14:59,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2024-11-28 04:14:59,678 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2024-11-28 04:15:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:00,097 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2024-11-28 04:15:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:15:00,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 24 [2024-11-28 04:15:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:00,098 INFO L225 Difference]: With dead ends: 112 [2024-11-28 04:15:00,098 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 04:15:00,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=50, Unknown=2, NotChecked=14, Total=90 [2024-11-28 04:15:00,099 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:00,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 116 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 4 Unknown, 70 Unchecked, 0.3s Time] [2024-11-28 04:15:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 04:15:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2024-11-28 04:15:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 92 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:15:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2024-11-28 04:15:00,105 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 24 [2024-11-28 04:15:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:00,105 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2024-11-28 04:15:00,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2024-11-28 04:15:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2024-11-28 04:15:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 04:15:00,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:00,106 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:00,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:15:00,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:15:00,307 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-28 04:15:00,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1928036758, now seen corresponding path program 1 times [2024-11-28 04:15:00,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:00,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232727856] [2024-11-28 04:15:00,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:00,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:15:00,349 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:15:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:15:00,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:15:00,397 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:15:00,398 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2024-11-28 04:15:00,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2024-11-28 04:15:00,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:15:00,403 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:00,435 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:15:00,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:15:00 BoogieIcfgContainer [2024-11-28 04:15:00,439 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:15:00,440 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:15:00,440 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:15:00,440 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:15:00,441 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:11:35" (3/4) ... [2024-11-28 04:15:00,442 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 04:15:00,492 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 17. [2024-11-28 04:15:00,572 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:15:00,572 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:15:00,573 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:15:00,573 INFO L158 Benchmark]: Toolchain (without parser) took 206576.10ms. Allocated memory was 167.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 129.2MB in the beginning and 1.0GB in the end (delta: -875.9MB). Peak memory consumption was 740.9MB. Max. memory is 16.1GB. [2024-11-28 04:15:00,577 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 167.8MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:15:00,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 680.91ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 111.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:15:00,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.16ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:15:00,578 INFO L158 Benchmark]: Boogie Preprocessor took 89.26ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:15:00,578 INFO L158 Benchmark]: RCFGBuilder took 615.64ms. Allocated memory is still 167.8MB. Free memory was 107.4MB in the beginning and 91.3MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:15:00,580 INFO L158 Benchmark]: TraceAbstraction took 204986.60ms. Allocated memory was 167.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 90.7MB in the beginning and 1.0GB in the end (delta: -919.1MB). Peak memory consumption was 699.0MB. Max. memory is 16.1GB. [2024-11-28 04:15:00,581 INFO L158 Benchmark]: Witness Printer took 133.05ms. Allocated memory is still 1.8GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:15:00,582 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 167.8MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 680.91ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 111.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.16ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 89.26ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 615.64ms. Allocated memory is still 167.8MB. Free memory was 107.4MB in the beginning and 91.3MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 204986.60ms. Allocated memory was 167.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 90.7MB in the beginning and 1.0GB in the end (delta: -919.1MB). Peak memory consumption was 699.0MB. Max. memory is 16.1GB. * Witness Printer took 133.05ms. Allocated memory is still 1.8GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 993]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1005] SLL* null = malloc(sizeof(SLL)); [L1006] null->colour = BLACK [L1007] null->next = ((void*)0) [L1009] SLL* list = malloc(sizeof(SLL)); [L1010] list->next = null [L1011] list->colour = BLACK [L1013] SLL* end = list; VAL [end={-1:0}, list={-1:0}, null={-2:0}] [L1016] COND TRUE __VERIFIER_nondet_int() [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1029] end->colour = RED [L1030] end->next = malloc(sizeof(SLL)) [L1031] EXPR end->next [L1031] end = end->next [L1032] end->next = null [L1033] end->colour = BLACK [L1016] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={-1:0}, list={-1:0}, null={-2:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={-1:0}, list={-1:0}, null={-2:0}] [L1041] COND FALSE !(0) VAL [end={-1:0}, list={-1:0}, null={-2:0}] [L1042] EXPR end->colour [L1042] COND FALSE !(!(BLACK == end->colour)) [L1042] COND FALSE !(0) VAL [end={-1:0}, list={-1:0}, null={-2:0}] [L1044] COND TRUE null != end VAL [end={-1:0}, list={-1:0}, null={-2:0}] [L1046] EXPR end->colour [L1046] COND FALSE !(RED == end->colour) [L1053] EXPR end->next [L1053] end = end->next [L1044] COND TRUE null != end VAL [end={-3:0}, list={-1:0}, null={-2:0}] [L1046] EXPR end->colour [L1046] COND TRUE RED == end->colour [L1048] EXPR end->next [L1048] end = end->next [L1049] COND FALSE !(!(null != end)) VAL [end={-4:0}, list={-1:0}, null={-2:0}] [L1049] COND FALSE !(0) VAL [end={-4:0}, list={-1:0}, null={-2:0}] [L1050] EXPR end->colour [L1050] COND TRUE !(BLACK != end->colour) [L1050] CALL reach_error() [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-sentinel-2.c", 13, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 204.9s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 mSolverCounterUnknown, 678 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 678 mSDsluCounter, 1578 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 204 IncrementalHoareTripleChecker+Unchecked, 1252 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1653 IncrementalHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 326 mSDtfsCounter, 1653 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 388 GetRequests, 255 SyntacticMatches, 4 SemanticMatches, 129 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=10, InterpolantAutomatonStates: 86, 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, 11 MinimizatonAttempts, 150 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 195.4s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 460 ConstructedInterpolants, 53 QuantifiedInterpolants, 9634 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1141 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 26/73 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-28 04:15:00,800 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-11-28 04:15:00,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276c218-8e90-4987-929c-3ef38fff0c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)