./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/dll_of_dll-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 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:01:08,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:01:08,421 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:01:08,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:01:08,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:01:08,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:01:08,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:01:08,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:01:08,464 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:01:08,468 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:01:08,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:01:08,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:01:08,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:01:08,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:01:08,469 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:01:08,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:01:08,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:01:08,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:01:08,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:01:08,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:01:08,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:01:08,474 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:01:08,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:01:08,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:01:08,475 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:01:08,475 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:01:08,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:01:08,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:01:08,476 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:01:08,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:01:08,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:01:08,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:01:08,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:01:08,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:01:08,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:01:08,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:01:08,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:01:08,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:01:08,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:01:08,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:01:08,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:01:08,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:01:08,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2024-11-09 22:01:08,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:01:08,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:01:08,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:01:08,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:01:08,772 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:01:08,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2024-11-09 22:01:10,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:01:10,536 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:01:10,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2024-11-09 22:01:10,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d7edfa2c/036441c181384149972e23d85330075c/FLAGf5ce16c5d [2024-11-09 22:01:10,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d7edfa2c/036441c181384149972e23d85330075c [2024-11-09 22:01:10,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:01:10,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:01:10,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:01:10,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:01:10,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:01:10,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:01:10" (1/1) ... [2024-11-09 22:01:10,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f15dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:10, skipping insertion in model container [2024-11-09 22:01:10,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:01:10" (1/1) ... [2024-11-09 22:01:10,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:01:11,310 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/dll_of_dll-1.i[22634,22647] [2024-11-09 22:01:11,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:01:11,391 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:01:11,424 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/dll_of_dll-1.i[22634,22647] [2024-11-09 22:01:11,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:01:11,475 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:01:11,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11 WrapperNode [2024-11-09 22:01:11,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:01:11,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:01:11,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:01:11,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:01:11,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,539 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 215 [2024-11-09 22:01:11,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:01:11,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:01:11,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:01:11,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:01:11,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,596 INFO L175 MemorySlicer]: Split 48 memory accesses to 3 slices as follows [2, 6, 40]. 83 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 2, 11]. [2024-11-09 22:01:11,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,597 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,613 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,617 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,632 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:01:11,635 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:01:11,636 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:01:11,636 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:01:11,637 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (1/1) ... [2024-11-09 22:01:11,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:01:11,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:01:11,675 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) [2024-11-09 22:01:11,693 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 [2024-11-09 22:01:11,750 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-11-09 22:01:11,750 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-11-09 22:01:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2024-11-09 22:01:11,751 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2024-11-09 22:01:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 22:01:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:01:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2024-11-09 22:01:11,751 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2024-11-09 22:01:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 22:01:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 22:01:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 22:01:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 22:01:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 22:01:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 22:01:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 22:01:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 22:01:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 22:01:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 22:01:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-09 22:01:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-09 22:01:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-09 22:01:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2024-11-09 22:01:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2024-11-09 22:01:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2024-11-09 22:01:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2024-11-09 22:01:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:01:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 22:01:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 22:01:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:01:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:01:11,978 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:01:11,982 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:01:12,015 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L597: havoc #t~ret12.base, #t~ret12.offset; [2024-11-09 22:01:12,126 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L593: havoc #t~mem11.base, #t~mem11.offset;call ULTIMATE.dealloc(~#dll~0.base, ~#dll~0.offset);havoc ~#dll~0.base, ~#dll~0.offset; [2024-11-09 22:01:12,402 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L641: havoc dll_create_master_#t~ret21#1.base, dll_create_master_#t~ret21#1.offset; [2024-11-09 22:01:12,449 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-09 22:01:12,449 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:01:12,472 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:01:12,472 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:01:12,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:01:12 BoogieIcfgContainer [2024-11-09 22:01:12,473 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:01:12,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:01:12,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:01:12,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:01:12,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:01:10" (1/3) ... [2024-11-09 22:01:12,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a7cced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:01:12, skipping insertion in model container [2024-11-09 22:01:12,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:01:11" (2/3) ... [2024-11-09 22:01:12,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a7cced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:01:12, skipping insertion in model container [2024-11-09 22:01:12,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:01:12" (3/3) ... [2024-11-09 22:01:12,485 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2024-11-09 22:01:12,503 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:01:12,503 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:01:12,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:01:12,580 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;@719b25d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:01:12,580 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:01:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 109 states have (on average 1.6238532110091743) internal successors, (177), 129 states have internal predecessors, (177), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-09 22:01:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 22:01:12,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:01:12,593 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:01:12,593 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:01:12,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:01:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1904483846, now seen corresponding path program 1 times [2024-11-09 22:01:12,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:01:12,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026634381] [2024-11-09 22:01:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:01:12,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:01:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:12,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:13,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:13,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 22:01:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 22:01:13,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:01:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026634381] [2024-11-09 22:01:13,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026634381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:01:13,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:01:13,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 22:01:13,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905900755] [2024-11-09 22:01:13,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:01:13,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 22:01:13,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:01:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 22:01:13,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:01:13,149 INFO L87 Difference]: Start difference. First operand has 141 states, 109 states have (on average 1.6238532110091743) internal successors, (177), 129 states have internal predecessors, (177), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:01:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:01:13,430 INFO L93 Difference]: Finished difference Result 276 states and 454 transitions. [2024-11-09 22:01:13,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 22:01:13,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-09 22:01:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:01:13,444 INFO L225 Difference]: With dead ends: 276 [2024-11-09 22:01:13,445 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 22:01:13,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:01:13,453 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:01:13,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 199 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:01:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 22:01:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-09 22:01:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 101 states have (on average 1.2475247524752475) internal successors, (126), 119 states have internal predecessors, (126), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 22:01:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2024-11-09 22:01:13,517 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 39 [2024-11-09 22:01:13,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:01:13,517 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2024-11-09 22:01:13,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:01:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2024-11-09 22:01:13,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 22:01:13,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:01:13,522 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:01:13,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:01:13,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:01:13,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:01:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash 337351655, now seen corresponding path program 1 times [2024-11-09 22:01:13,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:01:13,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770130827] [2024-11-09 22:01:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:01:13,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:01:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:14,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:14,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:14,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 22:01:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 22:01:14,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:01:14,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770130827] [2024-11-09 22:01:14,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770130827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:01:14,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079780019] [2024-11-09 22:01:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:01:14,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:01:14,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:01:14,841 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) [2024-11-09 22:01:14,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:01:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:15,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 22:01:15,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:01:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:01:15,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:01:15,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079780019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:01:15,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:01:15,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-09 22:01:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981637447] [2024-11-09 22:01:15,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:01:15,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:01:15,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:01:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:01:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:01:15,180 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:01:15,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:01:15,332 INFO L93 Difference]: Finished difference Result 272 states and 346 transitions. [2024-11-09 22:01:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:01:15,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-09 22:01:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:01:15,338 INFO L225 Difference]: With dead ends: 272 [2024-11-09 22:01:15,339 INFO L226 Difference]: Without dead ends: 144 [2024-11-09 22:01:15,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:01:15,344 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 14 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:01:15,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 598 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:01:15,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-09 22:01:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-09 22:01:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 109 states have (on average 1.238532110091743) internal successors, (135), 127 states have internal predecessors, (135), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 22:01:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 175 transitions. [2024-11-09 22:01:15,370 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 175 transitions. Word has length 40 [2024-11-09 22:01:15,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:01:15,370 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 175 transitions. [2024-11-09 22:01:15,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:01:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 175 transitions. [2024-11-09 22:01:15,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 22:01:15,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:01:15,377 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:01:15,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:01:15,581 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 [2024-11-09 22:01:15,582 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:01:15,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:01:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2026025671, now seen corresponding path program 1 times [2024-11-09 22:01:15,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:01:15,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636883494] [2024-11-09 22:01:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:01:15,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:01:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:16,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:16,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:17,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:17,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 22:01:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:17,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-09 22:01:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:17,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:18,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 22:01:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:18,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 22:01:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:18,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:18,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 22:01:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:18,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-09 22:01:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:18,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:18,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 22:01:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 51 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-09 22:01:18,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:01:18,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636883494] [2024-11-09 22:01:18,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636883494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:01:18,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194407661] [2024-11-09 22:01:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:01:18,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:01:18,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:01:18,277 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) [2024-11-09 22:01:18,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:01:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:18,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 22:01:18,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:01:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-09 22:01:18,802 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:01:18,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194407661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:01:18,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:01:18,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 11 [2024-11-09 22:01:18,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298919047] [2024-11-09 22:01:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:01:18,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 22:01:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:01:18,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 22:01:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:01:18,808 INFO L87 Difference]: Start difference. First operand 144 states and 175 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 22:01:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:01:19,169 INFO L93 Difference]: Finished difference Result 287 states and 356 transitions. [2024-11-09 22:01:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 22:01:19,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2024-11-09 22:01:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:01:19,171 INFO L225 Difference]: With dead ends: 287 [2024-11-09 22:01:19,172 INFO L226 Difference]: Without dead ends: 148 [2024-11-09 22:01:19,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:01:19,176 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 50 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:01:19,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 625 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:01:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-09 22:01:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-09 22:01:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 112 states have (on average 1.2321428571428572) internal successors, (138), 131 states have internal predecessors, (138), 27 states have call successors, (27), 8 states have call predecessors, (27), 8 states have return successors, (15), 11 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-09 22:01:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 180 transitions. [2024-11-09 22:01:19,202 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 180 transitions. Word has length 112 [2024-11-09 22:01:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:01:19,203 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 180 transitions. [2024-11-09 22:01:19,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 22:01:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 180 transitions. [2024-11-09 22:01:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 22:01:19,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:01:19,207 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:01:19,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:01:19,411 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 [2024-11-09 22:01:19,412 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:01:19,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:01:19,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1779106649, now seen corresponding path program 1 times [2024-11-09 22:01:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:01:19,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458834114] [2024-11-09 22:01:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:01:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:01:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:19,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:20,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:20,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 22:01:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-09 22:01:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 22:01:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 22:01:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 22:01:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-09 22:01:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 22:01:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-09 22:01:21,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:01:21,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458834114] [2024-11-09 22:01:21,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458834114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:01:21,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402966703] [2024-11-09 22:01:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:01:21,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:01:21,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:01:21,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:01:21,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:01:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:21,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 22:01:21,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:01:22,060 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 [2024-11-09 22:01:22,131 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 [2024-11-09 22:01:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 22:01:22,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:01:22,631 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 [2024-11-09 22:01:22,647 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 [2024-11-09 22:01:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 22:01:22,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402966703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:01:22,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:01:22,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 24 [2024-11-09 22:01:22,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463047842] [2024-11-09 22:01:22,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:01:22,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 22:01:22,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:01:22,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 22:01:22,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2024-11-09 22:01:22,802 INFO L87 Difference]: Start difference. First operand 148 states and 180 transitions. Second operand has 24 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 9 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 22:01:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:01:24,432 INFO L93 Difference]: Finished difference Result 379 states and 463 transitions. [2024-11-09 22:01:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 22:01:24,433 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 9 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 112 [2024-11-09 22:01:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:01:24,435 INFO L225 Difference]: With dead ends: 379 [2024-11-09 22:01:24,435 INFO L226 Difference]: Without dead ends: 223 [2024-11-09 22:01:24,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 22:01:24,439 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 175 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:01:24,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2242 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 22:01:24,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-09 22:01:24,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 189. [2024-11-09 22:01:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.2094594594594594) internal successors, (179), 166 states have internal predecessors, (179), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-09 22:01:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 225 transitions. [2024-11-09 22:01:24,467 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 225 transitions. Word has length 112 [2024-11-09 22:01:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:01:24,468 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 225 transitions. [2024-11-09 22:01:24,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 9 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 22:01:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 225 transitions. [2024-11-09 22:01:24,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 22:01:24,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:01:24,469 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:01:24,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 22:01:24,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:01:24,670 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:01:24,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:01:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash 487252643, now seen corresponding path program 1 times [2024-11-09 22:01:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:01:24,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555149702] [2024-11-09 22:01:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:01:24,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:01:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:28,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:31,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:31,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:31,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 22:01:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:31,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-09 22:01:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:31,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-09 22:01:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:31,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 22:01:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:31,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 22:01:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:32,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:01:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:34,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 22:01:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:01:35,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-09 22:01:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat