./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem04_label56.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem04_label56.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 2262aabab9627c4ea14db7dc86f4bb007d53f272db7525238b48029085d9b972 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 17:34:11,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 17:34:11,641 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 17:34:11,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 17:34:11,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 17:34:11,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 17:34:11,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 17:34:11,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 17:34:11,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 17:34:11,667 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 17:34:11,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 17:34:11,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 17:34:11,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 17:34:11,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 17:34:11,668 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 17:34:11,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 17:34:11,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 17:34:11,668 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 17:34:11,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 17:34:11,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 17:34:11,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 17:34:11,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 17:34:11,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 17:34:11,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 17:34:11,669 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 17:34:11,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 17:34:11,669 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 17:34:11,670 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 17:34:11,670 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 17:34:11,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 17:34:11,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 17:34:11,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 17:34:11,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:34:11,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 17:34:11,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 17:34:11,671 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 17:34:11,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 17:34:11,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 17:34:11,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 17:34:11,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 17:34:11,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 17:34:11,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 17:34:11,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 17:34:11,671 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 -> /storage/repos/ultimate-jdk21/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 -> 2262aabab9627c4ea14db7dc86f4bb007d53f272db7525238b48029085d9b972 [2025-02-07 17:34:11,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 17:34:11,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 17:34:11,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 17:34:11,997 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 17:34:11,998 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 17:34:12,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label56.c [2025-02-07 17:34:13,416 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c68e0d312/e3d1a1e182b3464e8f462d9c68817cff/FLAG9734bc3b1 [2025-02-07 17:34:13,896 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 17:34:13,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label56.c [2025-02-07 17:34:13,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c68e0d312/e3d1a1e182b3464e8f462d9c68817cff/FLAG9734bc3b1 [2025-02-07 17:34:13,999 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c68e0d312/e3d1a1e182b3464e8f462d9c68817cff [2025-02-07 17:34:14,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 17:34:14,004 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 17:34:14,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 17:34:14,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 17:34:14,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 17:34:14,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:34:14" (1/1) ... [2025-02-07 17:34:14,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5057ad37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:14, skipping insertion in model container [2025-02-07 17:34:14,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:34:14" (1/1) ... [2025-02-07 17:34:14,111 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 17:34:14,998 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label56.c[182373,182386] [2025-02-07 17:34:15,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:34:15,033 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 17:34:15,409 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label56.c[182373,182386] [2025-02-07 17:34:15,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:34:15,436 INFO L204 MainTranslator]: Completed translation [2025-02-07 17:34:15,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15 WrapperNode [2025-02-07 17:34:15,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 17:34:15,437 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 17:34:15,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 17:34:15,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 17:34:15,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,667 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5573 [2025-02-07 17:34:15,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 17:34:15,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 17:34:15,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 17:34:15,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 17:34:15,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,828 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-07 17:34:15,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,923 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:15,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 17:34:15,994 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 17:34:15,994 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 17:34:15,994 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 17:34:15,996 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (1/1) ... [2025-02-07 17:34:16,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:34:16,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:34:16,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 17:34:16,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 17:34:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 17:34:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 17:34:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 17:34:16,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 17:34:16,136 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 17:34:16,138 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 17:34:20,654 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4081: havoc calculate_output3_#t~ret11#1;calculate_output2_#t~ret10#1 := calculate_output3_#res#1;havoc calculate_output3_#t~ret11#1, calculate_output3_~input#1;havoc calculate_output3_#in~input#1;assume { :end_inline_calculate_output3 } true;assume -2147483648 <= calculate_output2_#t~ret10#1 && calculate_output2_#t~ret10#1 <= 2147483647;calculate_output2_#res#1 := calculate_output2_#t~ret10#1;havoc calculate_output2_#t~ret10#1; [2025-02-07 17:34:20,655 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4081-2: calculate_output3_#t~ret11#1 := calculate_output4_#res#1;havoc calculate_output4_~input#1;havoc calculate_output4_#in~input#1;assume { :end_inline_calculate_output4 } true;assume -2147483648 <= calculate_output3_#t~ret11#1 && calculate_output3_#t~ret11#1 <= 2147483647;calculate_output3_#res#1 := calculate_output3_#t~ret11#1;havoc calculate_output3_#t~ret11#1; [2025-02-07 17:34:20,655 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1382: havoc calculate_output_#t~ret9#1;main_#t~ret13#1 := calculate_output_#res#1;havoc calculate_output_#t~ret9#1, calculate_output_~input#1;havoc calculate_output_#in~input#1;assume { :end_inline_calculate_output } true;assume -2147483648 <= main_#t~ret13#1 && main_#t~ret13#1 <= 2147483647;main_~output~0#1 := main_#t~ret13#1;havoc main_~input~0#1;havoc main_#t~ret13#1; [2025-02-07 17:34:20,655 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2719: havoc calculate_output2_#t~ret10#1;calculate_output_#t~ret9#1 := calculate_output2_#res#1;havoc calculate_output2_#t~ret10#1, calculate_output2_~input#1;havoc calculate_output2_#in~input#1;assume { :end_inline_calculate_output2 } true;assume -2147483648 <= calculate_output_#t~ret9#1 && calculate_output_#t~ret9#1 <= 2147483647;calculate_output_#res#1 := calculate_output_#t~ret9#1;havoc calculate_output_#t~ret9#1; [2025-02-07 17:34:21,057 INFO L? ?]: Removed 1513 outVars from TransFormulas that were not future-live. [2025-02-07 17:34:21,057 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 17:34:21,097 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 17:34:21,098 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 17:34:21,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:34:21 BoogieIcfgContainer [2025-02-07 17:34:21,098 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 17:34:21,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 17:34:21,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 17:34:21,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 17:34:21,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 05:34:14" (1/3) ... [2025-02-07 17:34:21,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14afd6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:34:21, skipping insertion in model container [2025-02-07 17:34:21,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:34:15" (2/3) ... [2025-02-07 17:34:21,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14afd6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:34:21, skipping insertion in model container [2025-02-07 17:34:21,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:34:21" (3/3) ... [2025-02-07 17:34:21,108 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem04_label56.c [2025-02-07 17:34:21,122 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 17:34:21,124 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem04_label56.c that has 1 procedures, 824 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 17:34:21,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 17:34:21,215 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;@75f74454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 17:34:21,215 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 17:34:21,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 824 states, 817 states have (on average 1.996328029375765) internal successors, (1631), 823 states have internal predecessors, (1631), 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) [2025-02-07 17:34:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2025-02-07 17:34:21,262 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:34:21,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:34:21,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:34:21,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:34:21,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1404274262, now seen corresponding path program 1 times [2025-02-07 17:34:21,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:34:21,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054321480] [2025-02-07 17:34:21,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:34:21,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:34:21,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 799 statements into 1 equivalence classes. [2025-02-07 17:34:21,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 799 of 799 statements. [2025-02-07 17:34:21,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:34:21,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:34:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:34:22,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:34:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054321480] [2025-02-07 17:34:22,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054321480] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:34:22,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:34:22,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 17:34:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334622420] [2025-02-07 17:34:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:34:22,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 17:34:22,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:34:22,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 17:34:22,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:34:22,650 INFO L87 Difference]: Start difference. First operand has 824 states, 817 states have (on average 1.996328029375765) internal successors, (1631), 823 states have internal predecessors, (1631), 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) Second operand has 2 states, 2 states have (on average 399.5) internal successors, (799), 2 states have internal predecessors, (799), 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) [2025-02-07 17:34:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:34:22,756 INFO L93 Difference]: Finished difference Result 888 states and 1754 transitions. [2025-02-07 17:34:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 17:34:22,761 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 399.5) internal successors, (799), 2 states have internal predecessors, (799), 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 799 [2025-02-07 17:34:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:34:22,783 INFO L225 Difference]: With dead ends: 888 [2025-02-07 17:34:22,784 INFO L226 Difference]: Without dead ends: 800 [2025-02-07 17:34:22,788 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 [2025-02-07 17:34:22,792 INFO L435 NwaCegarLoop]: 1568 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, 1568 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 [2025-02-07 17:34:22,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:34:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2025-02-07 17:34:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2025-02-07 17:34:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 1.0) internal successors, (799), 799 states have internal predecessors, (799), 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) [2025-02-07 17:34:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 799 transitions. [2025-02-07 17:34:22,885 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 799 transitions. Word has length 799 [2025-02-07 17:34:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:34:22,888 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 799 transitions. [2025-02-07 17:34:22,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 399.5) internal successors, (799), 2 states have internal predecessors, (799), 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) [2025-02-07 17:34:22,889 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 799 transitions. [2025-02-07 17:34:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2025-02-07 17:34:22,913 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:34:22,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:34:22,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 17:34:22,914 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:34:22,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:34:22,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1381569642, now seen corresponding path program 1 times [2025-02-07 17:34:22,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:34:22,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668675144] [2025-02-07 17:34:22,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:34:22,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:34:23,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 799 statements into 1 equivalence classes. [2025-02-07 17:34:23,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 799 of 799 statements. [2025-02-07 17:34:23,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:34:23,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:34:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:34:26,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:34:26,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668675144] [2025-02-07 17:34:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668675144] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:34:26,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:34:26,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 17:34:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482158233] [2025-02-07 17:34:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:34:26,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:34:26,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:34:26,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:34:26,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:34:26,267 INFO L87 Difference]: Start difference. First operand 800 states and 799 transitions. Second operand has 4 states, 4 states have (on average 199.75) internal successors, (799), 3 states have internal predecessors, (799), 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) [2025-02-07 17:34:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:34:27,419 INFO L93 Difference]: Finished difference Result 800 states and 799 transitions. [2025-02-07 17:34:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 17:34:27,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 199.75) internal successors, (799), 3 states have internal predecessors, (799), 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 799 [2025-02-07 17:34:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:34:27,422 INFO L225 Difference]: With dead ends: 800 [2025-02-07 17:34:27,422 INFO L226 Difference]: Without dead ends: 0 [2025-02-07 17:34:27,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 17:34:27,428 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 796 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:34:27,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 3 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-07 17:34:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-07 17:34:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-07 17:34:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:34:27,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-07 17:34:27,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 799 [2025-02-07 17:34:27,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:34:27,430 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-07 17:34:27,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.75) internal successors, (799), 3 states have internal predecessors, (799), 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) [2025-02-07 17:34:27,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-07 17:34:27,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-07 17:34:27,436 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 17:34:27,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 17:34:27,440 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-07 17:34:27,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-07 17:34:27,467 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 17:34:27,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 05:34:27 BoogieIcfgContainer [2025-02-07 17:34:27,487 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 17:34:27,488 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 17:34:27,489 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 17:34:27,489 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 17:34:27,490 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:34:21" (3/4) ... [2025-02-07 17:34:27,492 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-07 17:34:27,552 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-02-07 17:34:27,560 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-07 17:34:27,567 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-07 17:34:27,575 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-07 17:34:27,890 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 17:34:27,892 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 17:34:27,892 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 17:34:27,893 INFO L158 Benchmark]: Toolchain (without parser) took 13889.46ms. Allocated memory was 167.8MB in the beginning and 604.0MB in the end (delta: 436.2MB). Free memory was 106.2MB in the beginning and 468.3MB in the end (delta: -362.1MB). Peak memory consumption was 241.2MB. Max. memory is 16.1GB. [2025-02-07 17:34:27,894 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 201.3MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 17:34:27,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1431.91ms. Allocated memory is still 167.8MB. Free memory was 105.8MB in the beginning and 94.9MB in the end (delta: 11.0MB). Peak memory consumption was 87.4MB. Max. memory is 16.1GB. [2025-02-07 17:34:27,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 230.37ms. Allocated memory is still 167.8MB. Free memory was 94.9MB in the beginning and 56.9MB in the end (delta: 37.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-07 17:34:27,897 INFO L158 Benchmark]: Boogie Preprocessor took 323.54ms. Allocated memory is still 167.8MB. Free memory was 56.9MB in the beginning and 65.6MB in the end (delta: -8.7MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2025-02-07 17:34:27,897 INFO L158 Benchmark]: IcfgBuilder took 5104.48ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 65.6MB in the beginning and 165.9MB in the end (delta: -100.3MB). Peak memory consumption was 169.7MB. Max. memory is 16.1GB. [2025-02-07 17:34:27,897 INFO L158 Benchmark]: TraceAbstraction took 6386.82ms. Allocated memory was 293.6MB in the beginning and 360.7MB in the end (delta: 67.1MB). Free memory was 163.0MB in the beginning and 86.7MB in the end (delta: 76.3MB). Peak memory consumption was 138.8MB. Max. memory is 16.1GB. [2025-02-07 17:34:27,898 INFO L158 Benchmark]: Witness Printer took 403.71ms. Allocated memory was 360.7MB in the beginning and 604.0MB in the end (delta: 243.3MB). Free memory was 86.7MB in the beginning and 468.3MB in the end (delta: -381.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-07 17:34:27,901 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 201.3MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1431.91ms. Allocated memory is still 167.8MB. Free memory was 105.8MB in the beginning and 94.9MB in the end (delta: 11.0MB). Peak memory consumption was 87.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 230.37ms. Allocated memory is still 167.8MB. Free memory was 94.9MB in the beginning and 56.9MB in the end (delta: 37.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 323.54ms. Allocated memory is still 167.8MB. Free memory was 56.9MB in the beginning and 65.6MB in the end (delta: -8.7MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * IcfgBuilder took 5104.48ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 65.6MB in the beginning and 165.9MB in the end (delta: -100.3MB). Peak memory consumption was 169.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6386.82ms. Allocated memory was 293.6MB in the beginning and 360.7MB in the end (delta: 67.1MB). Free memory was 163.0MB in the beginning and 86.7MB in the end (delta: 76.3MB). Peak memory consumption was 138.8MB. Max. memory is 16.1GB. * Witness Printer took 403.71ms. Allocated memory was 360.7MB in the beginning and 604.0MB in the end (delta: 243.3MB). Free memory was 86.7MB in the beginning and 468.3MB in the end (delta: -381.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 4767]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 824 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 796 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 796 mSDsluCounter, 1571 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 794 IncrementalHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 1571 mSDtfsCounter, 794 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=824occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1598 NumberOfCodeBlocks, 1598 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 1596 ConstructedInterpolants, 0 QuantifiedInterpolants, 18153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4826]: Location Invariant Derived location invariant: ((((((((a25 == 1) && (19 == a14)) && (a28 == 15)) && (a3 == 1)) && (a1 == 1)) && (a7 == 1)) && (a26 != 17)) && (a4 == 17)) RESULT: Ultimate proved your program to be correct! [2025-02-07 17:34:27,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 Result: TRUE