./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:29:58,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:29:58,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:29:58,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:29:58,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:29:58,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:29:58,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:29:58,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:29:58,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:29:58,572 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:29:58,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:29:58,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:29:58,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:29:58,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:29:58,574 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:29:58,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:29:58,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:29:58,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:29:58,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:29:58,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:29:58,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:29:58,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:29:58,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:29:58,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:29:58,583 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:29:58,583 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:29:58,583 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:29:58,584 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:29:58,584 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:29:58,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:29:58,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:29:58,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:29:58,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:29:58,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:29:58,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:29:58,586 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:29:58,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:29:58,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:29:58,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:29:58,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:29:58,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:29:58,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:29:58,588 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f [2024-11-16 06:29:58,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:29:58,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:29:58,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:29:58,887 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:29:58,887 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:29:58,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2024-11-16 06:30:00,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:30:00,612 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:30:00,613 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2024-11-16 06:30:00,627 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2006d67bf/b7eb3863bee8484cba53d6d15b0c7a85/FLAG17b8dea9a [2024-11-16 06:30:00,928 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2006d67bf/b7eb3863bee8484cba53d6d15b0c7a85 [2024-11-16 06:30:00,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:30:00,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:30:00,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:30:00,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:30:00,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:30:00,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:30:00" (1/1) ... [2024-11-16 06:30:00,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c35e598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:00, skipping insertion in model container [2024-11-16 06:30:00,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:30:00" (1/1) ... [2024-11-16 06:30:00,986 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:30:01,286 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2024-11-16 06:30:01,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:30:01,344 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:30:01,395 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2024-11-16 06:30:01,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:30:01,445 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:30:01,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01 WrapperNode [2024-11-16 06:30:01,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:30:01,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:30:01,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:30:01,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:30:01,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,494 INFO L138 Inliner]: procedures = 129, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 192 [2024-11-16 06:30:01,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:30:01,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:30:01,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:30:01,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:30:01,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,513 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,567 INFO L175 MemorySlicer]: Split 42 memory accesses to 5 slices as follows [2, 8, 8, 6, 18]. 43 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 0, 1, 0]. The 10 writes are split as follows [0, 1, 1, 1, 7]. [2024-11-16 06:30:01,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,589 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:30:01,600 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:30:01,600 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:30:01,600 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:30:01,601 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (1/1) ... [2024-11-16 06:30:01,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:30:01,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:30:01,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 06:30:01,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 06:30:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-11-16 06:30:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-11-16 06:30:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 06:30:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:30:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 06:30:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 06:30:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 06:30:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 06:30:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-16 06:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-16 06:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 06:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 06:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 06:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-16 06:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-16 06:30:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2024-11-16 06:30:01,711 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2024-11-16 06:30:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:30:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-16 06:30:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-16 06:30:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-16 06:30:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-16 06:30:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-16 06:30:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2024-11-16 06:30:01,713 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2024-11-16 06:30:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:30:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:30:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 06:30:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 06:30:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-16 06:30:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2024-11-16 06:30:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2024-11-16 06:30:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:30:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:30:01,886 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:30:01,889 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:30:02,287 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L639: call ULTIMATE.dealloc(main_~#p1~0#1.base, main_~#p1~0#1.offset);havoc main_~#p1~0#1.base, main_~#p1~0#1.offset;call ULTIMATE.dealloc(main_~#p2~0#1.base, main_~#p2~0#1.offset);havoc main_~#p2~0#1.base, main_~#p2~0#1.offset; [2024-11-16 06:30:02,287 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L599: havoc create_sll_#t~mem11#1.base, create_sll_#t~mem11#1.offset;call ULTIMATE.dealloc(create_sll_~#list~0#1.base, create_sll_~#list~0#1.offset);havoc create_sll_~#list~0#1.base, create_sll_~#list~0#1.offset; [2024-11-16 06:30:02,323 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-16 06:30:02,323 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:30:02,345 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:30:02,351 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:30:02,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:30:02 BoogieIcfgContainer [2024-11-16 06:30:02,352 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:30:02,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:30:02,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:30:02,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:30:02,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:30:00" (1/3) ... [2024-11-16 06:30:02,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6ea71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:30:02, skipping insertion in model container [2024-11-16 06:30:02,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:30:01" (2/3) ... [2024-11-16 06:30:02,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6ea71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:30:02, skipping insertion in model container [2024-11-16 06:30:02,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:30:02" (3/3) ... [2024-11-16 06:30:02,364 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2024-11-16 06:30:02,382 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:30:02,383 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:30:02,460 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:30:02,469 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40aaa811, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:30:02,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:30:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 92 states have (on average 1.565217391304348) internal successors, (144), 102 states have internal predecessors, (144), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-16 06:30:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 06:30:02,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:30:02,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:30:02,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:30:02,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:30:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1937365100, now seen corresponding path program 1 times [2024-11-16 06:30:02,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:30:02,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759564254] [2024-11-16 06:30:02,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:30:02,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:30:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:30:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:30:02,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:30:02,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759564254] [2024-11-16 06:30:02,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759564254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:30:02,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:30:02,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:30:02,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108452327] [2024-11-16 06:30:02,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:30:02,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:30:02,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:30:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:30:02,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:30:02,769 INFO L87 Difference]: Start difference. First operand has 115 states, 92 states have (on average 1.565217391304348) internal successors, (144), 102 states have internal predecessors, (144), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 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) [2024-11-16 06:30:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:30:02,807 INFO L93 Difference]: Finished difference Result 225 states and 361 transitions. [2024-11-16 06:30:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:30:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 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) Word has length 18 [2024-11-16 06:30:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:30:02,820 INFO L225 Difference]: With dead ends: 225 [2024-11-16 06:30:02,820 INFO L226 Difference]: Without dead ends: 105 [2024-11-16 06:30:02,825 INFO L431 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 [2024-11-16 06:30:02,829 INFO L432 NwaCegarLoop]: 133 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, 133 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 [2024-11-16 06:30:02,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:30:02,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-16 06:30:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-16 06:30:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 93 states have internal predecessors, (100), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 06:30:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2024-11-16 06:30:02,887 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 18 [2024-11-16 06:30:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:30:02,891 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2024-11-16 06:30:02,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 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) [2024-11-16 06:30:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2024-11-16 06:30:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 06:30:02,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:30:02,893 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:30:02,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:30:02,894 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:30:02,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:30:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1170217962, now seen corresponding path program 1 times [2024-11-16 06:30:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:30:02,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017506653] [2024-11-16 06:30:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:30:02,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:30:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:30:03,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 06:30:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:30:03,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:30:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:30:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 06:30:03,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:30:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017506653] [2024-11-16 06:30:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017506653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:30:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950364481] [2024-11-16 06:30:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:30:03,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:30:03,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:30:03,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:30:03,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:30:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:30:04,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 06:30:04,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:30:04,202 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 15 treesize of output 1 [2024-11-16 06:30:04,291 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 24 treesize of output 16 [2024-11-16 06:30:04,300 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 15 treesize of output 1 [2024-11-16 06:30:04,394 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 16 treesize of output 8 [2024-11-16 06:30:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:30:04,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:30:04,468 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 34 treesize of output 30 [2024-11-16 06:30:04,622 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 30 treesize of output 26 [2024-11-16 06:30:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 06:30:04,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950364481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:30:04,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:30:04,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 13 [2024-11-16 06:30:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943100126] [2024-11-16 06:30:04,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:30:04,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 06:30:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:30:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 06:30:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:30:04,675 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 06:30:08,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:30:12,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:30:16,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:30:20,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:30:24,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:30:28,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:30:32,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:30:33,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:30:33,571 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2024-11-16 06:30:33,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 06:30:33,573 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-16 06:30:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:30:33,575 INFO L225 Difference]: With dead ends: 139 [2024-11-16 06:30:33,575 INFO L226 Difference]: Without dead ends: 135 [2024-11-16 06:30:33,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-16 06:30:33,577 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 186 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 38 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2024-11-16 06:30:33,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 527 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 721 Invalid, 7 Unknown, 0 Unchecked, 28.6s Time] [2024-11-16 06:30:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-16 06:30:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2024-11-16 06:30:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 104 states have (on average 1.1826923076923077) internal successors, (123), 113 states have internal predecessors, (123), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 06:30:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2024-11-16 06:30:33,608 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 38 [2024-11-16 06:30:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:30:33,609 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2024-11-16 06:30:33,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 06:30:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2024-11-16 06:30:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 06:30:33,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:30:33,611 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:30:33,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:30:33,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:30:33,812 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:30:33,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:30:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1279428335, now seen corresponding path program 1 times [2024-11-16 06:30:33,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:30:33,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124900395] [2024-11-16 06:30:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:30:33,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:30:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:30:34,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 06:30:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:30:34,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:30:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:30:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 06:30:34,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:30:34,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124900395] [2024-11-16 06:30:34,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124900395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:30:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884693533] [2024-11-16 06:30:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:30:34,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:30:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:30:34,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:30:34,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:30:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:30:34,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-16 06:30:34,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:30:34,857 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 15 treesize of output 11 [2024-11-16 06:30:34,868 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 15 treesize of output 11 [2024-11-16 06:30:34,922 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 19 [2024-11-16 06:30:34,928 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 19 [2024-11-16 06:30:34,930 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 15 treesize of output 11 [2024-11-16 06:30:34,935 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 15 treesize of output 11 [2024-11-16 06:30:35,121 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 11 [2024-11-16 06:30:35,130 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 11 [2024-11-16 06:30:35,135 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 [2024-11-16 06:30:35,140 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 [2024-11-16 06:30:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:30:35,256 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:30:35,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884693533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:30:35,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:30:35,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 21 [2024-11-16 06:30:35,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056787406] [2024-11-16 06:30:35,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:30:35,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:30:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:30:35,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:30:35,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2024-11-16 06:30:35,258 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:30:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:30:35,719 INFO L93 Difference]: Finished difference Result 246 states and 286 transitions. [2024-11-16 06:30:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 06:30:35,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-11-16 06:30:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:30:35,722 INFO L225 Difference]: With dead ends: 246 [2024-11-16 06:30:35,722 INFO L226 Difference]: Without dead ends: 242 [2024-11-16 06:30:35,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2024-11-16 06:30:35,726 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 152 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:30:35,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 918 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:30:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-16 06:30:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 162. [2024-11-16 06:30:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 135 states have (on average 1.1703703703703703) internal successors, (158), 144 states have internal predecessors, (158), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 06:30:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 187 transitions. [2024-11-16 06:30:35,768 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 187 transitions. Word has length 41 [2024-11-16 06:30:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:30:35,769 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 187 transitions. [2024-11-16 06:30:35,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:30:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 187 transitions. [2024-11-16 06:30:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 06:30:35,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:30:35,771 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:30:35,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:30:35,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-16 06:30:35,973 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:30:35,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:30:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash -415393040, now seen corresponding path program 1 times [2024-11-16 06:30:35,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:30:35,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617462858] [2024-11-16 06:30:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:30:35,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:30:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 06:30:36,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 06:30:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 06:30:36,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 06:30:36,050 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 06:30:36,052 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 06:30:36,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 06:30:36,058 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-16 06:30:36,099 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 06:30:36,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 06:30:36 BoogieIcfgContainer [2024-11-16 06:30:36,102 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 06:30:36,103 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 06:30:36,103 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 06:30:36,103 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 06:30:36,104 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:30:02" (3/4) ... [2024-11-16 06:30:36,104 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-16 06:30:36,158 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 06:30:36,158 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 06:30:36,158 INFO L158 Benchmark]: Toolchain (without parser) took 35226.90ms. Allocated memory was 169.9MB in the beginning and 241.2MB in the end (delta: 71.3MB). Free memory was 112.3MB in the beginning and 148.3MB in the end (delta: -35.9MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2024-11-16 06:30:36,159 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 169.9MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:30:36,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.95ms. Allocated memory is still 169.9MB. Free memory was 112.3MB in the beginning and 91.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-16 06:30:36,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.38ms. Allocated memory is still 169.9MB. Free memory was 91.4MB in the beginning and 89.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:30:36,162 INFO L158 Benchmark]: Boogie Preprocessor took 104.10ms. Allocated memory is still 169.9MB. Free memory was 88.8MB in the beginning and 84.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 06:30:36,162 INFO L158 Benchmark]: IcfgBuilder took 752.25ms. Allocated memory was 169.9MB in the beginning and 241.2MB in the end (delta: 71.3MB). Free memory was 84.2MB in the beginning and 198.2MB in the end (delta: -114.1MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2024-11-16 06:30:36,162 INFO L158 Benchmark]: TraceAbstraction took 33746.06ms. Allocated memory is still 241.2MB. Free memory was 197.2MB in the beginning and 151.4MB in the end (delta: 45.8MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2024-11-16 06:30:36,163 INFO L158 Benchmark]: Witness Printer took 55.27ms. Allocated memory is still 241.2MB. Free memory was 151.4MB in the beginning and 148.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:30:36,164 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 169.9MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 511.95ms. Allocated memory is still 169.9MB. Free memory was 112.3MB in the beginning and 91.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.38ms. Allocated memory is still 169.9MB. Free memory was 91.4MB in the beginning and 89.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 104.10ms. Allocated memory is still 169.9MB. Free memory was 88.8MB in the beginning and 84.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 752.25ms. Allocated memory was 169.9MB in the beginning and 241.2MB in the end (delta: 71.3MB). Free memory was 84.2MB in the beginning and 198.2MB in the end (delta: -114.1MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * TraceAbstraction took 33746.06ms. Allocated memory is still 241.2MB. Free memory was 197.2MB in the beginning and 151.4MB in the end (delta: 45.8MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * Witness Printer took 55.27ms. Allocated memory is still 241.2MB. Free memory was 151.4MB in the beginning and 148.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L639] const struct node *p1, *p2; [L640] CALL, EXPR create_sll(&p1, &p2) [L588] struct node *list = ((void *)0); [L588] struct node *list = ((void *)0); [L590] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) VAL [ptr={-1:0}] [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; VAL [\result={-1:0}] [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node VAL [\old(ppnode)={3:0}] [L590] RET chain_node(&list) VAL [list={3:0}, pp1={6:0}, pp2={5:0}] [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L597] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) VAL [ptr={-2:0}] [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; VAL [\result={-2:0}] [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node VAL [\old(ppnode)={3:0}] [L597] RET chain_node(&list) VAL [list={3:0}] [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; VAL [\result={-2:0}] [L640] RET, EXPR create_sll(&p1, &p2) [L640] struct node *list = create_sll(&p1, &p2); [L641] COND FALSE !(0) VAL [list={-2:0}, p1={6:0}, p2={5:0}] [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) [L642] CALL check_seq_next(p1, p2) VAL [\old(beg)={-1:0}, \old(end)={-1:0}] [L626] COND FALSE !(!(beg)) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={-1:0}, end={-1:0}] [L626] COND FALSE !(0) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={-1:0}, end={-1:0}] [L627] COND FALSE !(!(end)) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={-1:0}, end={-1:0}] [L627] COND FALSE !(0) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={-1:0}, end={-1:0}] [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={0:0}, end={-1:0}] [L629] COND TRUE !(beg) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={0:0}, end={-1:0}] [L629] CALL fail() [L565] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 33.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 346 SdHoareTripleChecker+Valid, 28.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 338 mSDsluCounter, 1578 SdHoareTripleChecker+Invalid, 28.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1276 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 951 IncrementalHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 302 mSDtfsCounter, 951 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=3, InterpolantAutomatonStates: 35, 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, 3 MinimizatonAttempts, 88 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 208 ConstructedInterpolants, 12 QuantifiedInterpolants, 1912 SizeOfPredicates, 27 NumberOfNonLiveVariables, 679 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 10/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-16 06:30:36,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE