./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/forester-heap/dll-rb-sentinel-2.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 2bd23b8476745cc5eeb44766af6c01d42c768ef8188ecd9b3f71230eca21db6b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:03:33,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:03:33,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:03:33,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:03:33,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:03:33,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:03:33,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:03:33,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:03:33,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:03:33,702 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:03:33,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:03:33,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:03:33,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:03:33,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:03:33,703 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:03:33,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:03:33,704 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:03:33,704 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:03:33,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:03:33,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:03:33,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:03:33,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:03:33,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:03:33,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:03:33,706 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:03:33,706 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:03:33,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:03:33,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:03:33,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:03:33,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:03:33,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:03:33,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:03:33,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:03:33,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:03:33,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:03:33,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:03:33,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:03:33,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:03:33,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:03:33,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:03:33,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:03:33,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:03:33,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bd23b8476745cc5eeb44766af6c01d42c768ef8188ecd9b3f71230eca21db6b [2024-11-18 13:03:33,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:03:33,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:03:33,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:03:33,925 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:03:33,925 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:03:33,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i [2024-11-18 13:03:35,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:03:35,451 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:03:35,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i [2024-11-18 13:03:35,468 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f81a4ad2/db7e45cf090a4c9182c5ab8347c3b3b8/FLAG74c9c16e7 [2024-11-18 13:03:35,482 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f81a4ad2/db7e45cf090a4c9182c5ab8347c3b3b8 [2024-11-18 13:03:35,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:03:35,487 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:03:35,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:03:35,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:03:35,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:03:35,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b36893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35, skipping insertion in model container [2024-11-18 13:03:35,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:03:35,772 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/forester-heap/dll-rb-sentinel-2.i[22673,22686] [2024-11-18 13:03:35,776 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/forester-heap/dll-rb-sentinel-2.i[22743,22756] [2024-11-18 13:03:35,777 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/forester-heap/dll-rb-sentinel-2.i[22807,22820] [2024-11-18 13:03:35,778 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/forester-heap/dll-rb-sentinel-2.i[22902,22915] [2024-11-18 13:03:35,779 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/forester-heap/dll-rb-sentinel-2.i[22974,22987] [2024-11-18 13:03:35,780 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/forester-heap/dll-rb-sentinel-2.i[23113,23126] [2024-11-18 13:03:35,780 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/forester-heap/dll-rb-sentinel-2.i[23187,23200] [2024-11-18 13:03:35,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:03:35,794 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:03:35,823 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/forester-heap/dll-rb-sentinel-2.i[22673,22686] [2024-11-18 13:03:35,824 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/forester-heap/dll-rb-sentinel-2.i[22743,22756] [2024-11-18 13:03:35,824 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/forester-heap/dll-rb-sentinel-2.i[22807,22820] [2024-11-18 13:03:35,825 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/forester-heap/dll-rb-sentinel-2.i[22902,22915] [2024-11-18 13:03:35,826 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/forester-heap/dll-rb-sentinel-2.i[22974,22987] [2024-11-18 13:03:35,827 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/forester-heap/dll-rb-sentinel-2.i[23113,23126] [2024-11-18 13:03:35,827 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/forester-heap/dll-rb-sentinel-2.i[23187,23200] [2024-11-18 13:03:35,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:03:35,860 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:03:35,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35 WrapperNode [2024-11-18 13:03:35,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:03:35,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:03:35,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:03:35,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:03:35,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,904 INFO L138 Inliner]: procedures = 119, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 158 [2024-11-18 13:03:35,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:03:35,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:03:35,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:03:35,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:03:35,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,938 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [2, 30]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 15 writes are split as follows [0, 15]. [2024-11-18 13:03:35,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,952 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:03:35,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:03:35,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:03:35,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:03:35,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (1/1) ... [2024-11-18 13:03:35,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:03:35,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:03:35,988 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) [2024-11-18 13:03:35,993 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 [2024-11-18 13:03:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 13:03:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 13:03:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 13:03:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 13:03:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 13:03:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:03:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 13:03:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 13:03:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 13:03:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 13:03:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 13:03:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:03:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:03:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:03:36,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:03:36,148 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:03:36,151 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:03:36,384 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-18 13:03:36,385 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:03:36,398 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:03:36,399 INFO L316 CfgBuilder]: Removed 17 assume(true) statements. [2024-11-18 13:03:36,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:36 BoogieIcfgContainer [2024-11-18 13:03:36,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:03:36,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:03:36,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:03:36,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:03:36,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:03:35" (1/3) ... [2024-11-18 13:03:36,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2398c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:36, skipping insertion in model container [2024-11-18 13:03:36,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:35" (2/3) ... [2024-11-18 13:03:36,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2398c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:36, skipping insertion in model container [2024-11-18 13:03:36,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:36" (3/3) ... [2024-11-18 13:03:36,407 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-2.i [2024-11-18 13:03:36,422 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:03:36,422 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-18 13:03:36,471 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:03:36,476 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;@3223260f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:03:36,476 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-18 13:03:36,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-18 13:03:36,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:36,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-18 13:03:36,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:36,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:36,489 INFO L85 PathProgramCache]: Analyzing trace with hash 891600134, now seen corresponding path program 1 times [2024-11-18 13:03:36,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:36,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082287051] [2024-11-18 13:03:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:36,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:36,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082287051] [2024-11-18 13:03:36,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082287051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:03:36,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:03:36,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:03:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35406173] [2024-11-18 13:03:36,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:03:36,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:03:36,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:03:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:03:36,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:03:36,746 INFO L87 Difference]: Start difference. First operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:03:36,790 INFO L93 Difference]: Finished difference Result 92 states and 150 transitions. [2024-11-18 13:03:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:03:36,794 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-18 13:03:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:03:36,802 INFO L225 Difference]: With dead ends: 92 [2024-11-18 13:03:36,802 INFO L226 Difference]: Without dead ends: 41 [2024-11-18 13:03:36,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:03:36,808 INFO L432 NwaCegarLoop]: 52 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, 52 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:03:36,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:03:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-18 13:03:36,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-18 13:03:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-11-18 13:03:36,861 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2024-11-18 13:03:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:03:36,861 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-11-18 13:03:36,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-11-18 13:03:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-18 13:03:36,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:36,863 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:03:36,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:03:36,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:36,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1806905862, now seen corresponding path program 1 times [2024-11-18 13:03:36,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:36,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421265201] [2024-11-18 13:03:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:36,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:37,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:37,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421265201] [2024-11-18 13:03:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421265201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:03:37,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:03:37,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:03:37,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922272733] [2024-11-18 13:03:37,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:03:37,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:03:37,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:03:37,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:03:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:03:37,038 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:03:37,118 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2024-11-18 13:03:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:03:37,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2024-11-18 13:03:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:03:37,119 INFO L225 Difference]: With dead ends: 47 [2024-11-18 13:03:37,119 INFO L226 Difference]: Without dead ends: 45 [2024-11-18 13:03:37,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:03:37,120 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:03:37,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 47 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:03:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-18 13:03:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2024-11-18 13:03:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-11-18 13:03:37,126 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 7 [2024-11-18 13:03:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:03:37,126 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-11-18 13:03:37,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-11-18 13:03:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 13:03:37,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:37,127 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:03:37,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:03:37,128 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:37,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:37,128 INFO L85 PathProgramCache]: Analyzing trace with hash 179566605, now seen corresponding path program 1 times [2024-11-18 13:03:37,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:37,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984361245] [2024-11-18 13:03:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:37,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:37,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:37,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984361245] [2024-11-18 13:03:37,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984361245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:03:37,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:03:37,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:03:37,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116775259] [2024-11-18 13:03:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:03:37,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:03:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:03:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:03:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:03:37,250 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:03:37,299 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-18 13:03:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:03:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-11-18 13:03:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:03:37,300 INFO L225 Difference]: With dead ends: 39 [2024-11-18 13:03:37,300 INFO L226 Difference]: Without dead ends: 37 [2024-11-18 13:03:37,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:03:37,301 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:03:37,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 80 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:03:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-18 13:03:37,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-18 13:03:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.25) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-18 13:03:37,306 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2024-11-18 13:03:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:03:37,306 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-18 13:03:37,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-18 13:03:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:03:37,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:37,307 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:03:37,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 13:03:37,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:37,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash 711412120, now seen corresponding path program 1 times [2024-11-18 13:03:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:37,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053025583] [2024-11-18 13:03:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:37,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:37,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:37,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053025583] [2024-11-18 13:03:37,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053025583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:03:37,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:03:37,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 13:03:37,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437383520] [2024-11-18 13:03:37,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:03:37,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:03:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:03:37,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:03:37,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:03:37,541 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:03:37,762 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2024-11-18 13:03:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:03:37,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:03:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:03:37,763 INFO L225 Difference]: With dead ends: 78 [2024-11-18 13:03:37,763 INFO L226 Difference]: Without dead ends: 76 [2024-11-18 13:03:37,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:03:37,764 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 67 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:03:37,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 106 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:03:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-18 13:03:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 55. [2024-11-18 13:03:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.26) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-11-18 13:03:37,772 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 10 [2024-11-18 13:03:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:03:37,772 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-11-18 13:03:37,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-11-18 13:03:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 13:03:37,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:37,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:03:37,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 13:03:37,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:37,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:37,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2056579816, now seen corresponding path program 1 times [2024-11-18 13:03:37,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:37,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779435753] [2024-11-18 13:03:37,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:37,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:37,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779435753] [2024-11-18 13:03:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779435753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:03:37,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:03:37,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:03:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70843104] [2024-11-18 13:03:37,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:03:37,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:03:37,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:03:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:03:37,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:03:37,921 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:03:37,994 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-18 13:03:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:03:37,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2024-11-18 13:03:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:03:37,995 INFO L225 Difference]: With dead ends: 55 [2024-11-18 13:03:37,995 INFO L226 Difference]: Without dead ends: 53 [2024-11-18 13:03:37,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:03:37,996 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:03:37,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:03:37,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-18 13:03:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-18 13:03:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2024-11-18 13:03:38,010 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 11 [2024-11-18 13:03:38,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:03:38,011 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2024-11-18 13:03:38,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2024-11-18 13:03:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 13:03:38,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:38,016 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:03:38,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 13:03:38,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:38,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash -688119236, now seen corresponding path program 1 times [2024-11-18 13:03:38,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:38,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583086305] [2024-11-18 13:03:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583086305] [2024-11-18 13:03:38,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583086305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:03:38,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:03:38,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:03:38,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147024603] [2024-11-18 13:03:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:03:38,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:03:38,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:03:38,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:03:38,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:03:38,364 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:03:38,450 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-11-18 13:03:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:03:38,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-18 13:03:38,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:03:38,452 INFO L225 Difference]: With dead ends: 53 [2024-11-18 13:03:38,453 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 13:03:38,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:03:38,454 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:03:38,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 38 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:03:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 13:03:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-18 13:03:38,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1875) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-18 13:03:38,468 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 13 [2024-11-18 13:03:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:03:38,468 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-18 13:03:38,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-18 13:03:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-18 13:03:38,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:38,469 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:03:38,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 13:03:38,469 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:38,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:38,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1285114177, now seen corresponding path program 1 times [2024-11-18 13:03:38,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:38,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610964699] [2024-11-18 13:03:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:38,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:38,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:38,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610964699] [2024-11-18 13:03:38,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610964699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:03:38,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:03:38,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:03:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718421422] [2024-11-18 13:03:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:03:38,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:03:38,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:03:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:03:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:03:38,526 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:03:38,600 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2024-11-18 13:03:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:03:38,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2024-11-18 13:03:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:03:38,601 INFO L225 Difference]: With dead ends: 66 [2024-11-18 13:03:38,601 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 13:03:38,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:03:38,602 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:03:38,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 79 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:03:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 13:03:38,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-11-18 13:03:38,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.18) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:38,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2024-11-18 13:03:38,612 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 14 [2024-11-18 13:03:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:03:38,612 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2024-11-18 13:03:38,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2024-11-18 13:03:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 13:03:38,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:38,613 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:03:38,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 13:03:38,614 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:38,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:38,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1621160418, now seen corresponding path program 1 times [2024-11-18 13:03:38,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:38,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288235094] [2024-11-18 13:03:38,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:38,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:38,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:38,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288235094] [2024-11-18 13:03:38,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288235094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:03:38,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170985728] [2024-11-18 13:03:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:38,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:03:38,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:03:38,712 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) [2024-11-18 13:03:38,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:03:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:38,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 13:03:38,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:03:38,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-18 13:03:38,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-11-18 13:03:39,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 13:03:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:39,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:03:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170985728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:03:39,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:03:39,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 13:03:39,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397718190] [2024-11-18 13:03:39,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:03:39,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:03:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:03:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:03:39,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:03:39,092 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:39,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:03:39,223 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2024-11-18 13:03:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:03:39,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 17 [2024-11-18 13:03:39,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:03:39,225 INFO L225 Difference]: With dead ends: 75 [2024-11-18 13:03:39,225 INFO L226 Difference]: Without dead ends: 53 [2024-11-18 13:03:39,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:03:39,226 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 34 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:03:39,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 98 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:03:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-18 13:03:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-18 13:03:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.16) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-11-18 13:03:39,239 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 17 [2024-11-18 13:03:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:03:39,241 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-11-18 13:03:39,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-11-18 13:03:39,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 13:03:39,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:39,242 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:03:39,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:03:39,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:03:39,443 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:39,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1036168340, now seen corresponding path program 1 times [2024-11-18 13:03:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:39,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820189097] [2024-11-18 13:03:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:39,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:39,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:39,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820189097] [2024-11-18 13:03:39,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820189097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:03:39,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204105602] [2024-11-18 13:03:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:39,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:03:39,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:03:39,907 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) [2024-11-18 13:03:39,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:03:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:40,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-18 13:03:40,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:03:40,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-18 13:03:40,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:03:40,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-11-18 13:03:40,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-18 13:03:40,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2024-11-18 13:03:40,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:03:40,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-18 13:03:40,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 20 [2024-11-18 13:03:40,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:03:40,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2024-11-18 13:03:40,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2024-11-18 13:03:40,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2024-11-18 13:03:40,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 56 [2024-11-18 13:03:40,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2024-11-18 13:03:40,176 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 79 treesize of output 47 [2024-11-18 13:03:40,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2024-11-18 13:03:40,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 62 [2024-11-18 13:03:40,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 56 [2024-11-18 13:03:40,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 75 [2024-11-18 13:03:40,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:03:40,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2024-11-18 13:03:40,245 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-18 13:03:40,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2024-11-18 13:03:40,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 50 [2024-11-18 13:03:40,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 58 [2024-11-18 13:03:40,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 56 [2024-11-18 13:03:40,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 60 [2024-11-18 13:03:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:40,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:03:40,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:03:40,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2024-11-18 13:03:40,347 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 71 treesize of output 51 [2024-11-18 13:03:40,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-11-18 13:03:40,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:03:40,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 172 [2024-11-18 13:03:40,479 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 363 treesize of output 267 [2024-11-18 13:03:40,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 221 [2024-11-18 13:03:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204105602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:03:42,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:03:42,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-18 13:03:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872085880] [2024-11-18 13:03:42,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:03:42,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 13:03:42,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:03:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 13:03:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=116, Unknown=2, NotChecked=0, Total=156 [2024-11-18 13:03:42,711 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:03:42,973 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2024-11-18 13:03:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:03:42,973 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-18 13:03:42,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:03:42,974 INFO L225 Difference]: With dead ends: 65 [2024-11-18 13:03:42,976 INFO L226 Difference]: Without dead ends: 63 [2024-11-18 13:03:42,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=78, Invalid=192, Unknown=2, NotChecked=0, Total=272 [2024-11-18 13:03:42,977 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 121 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:03:42,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 99 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:03:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-18 13:03:42,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2024-11-18 13:03:42,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-18 13:03:42,986 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2024-11-18 13:03:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:03:42,987 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-18 13:03:42,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:03:42,987 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-18 13:03:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:03:42,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:03:42,988 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:03:43,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:03:43,188 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,SelfDestructingSolverStorable8 [2024-11-18 13:03:43,189 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-18 13:03:43,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:03:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1438350182, now seen corresponding path program 1 times [2024-11-18 13:03:43,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:03:43,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057770459] [2024-11-18 13:03:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:43,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:03:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:43,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:03:43,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057770459] [2024-11-18 13:03:43,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057770459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:03:43,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396381707] [2024-11-18 13:03:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:03:43,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:03:43,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:03:43,648 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) [2024-11-18 13:03:43,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:03:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:03:43,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-18 13:03:43,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:03:43,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-18 13:03:43,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-18 13:03:43,795 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-18 13:03:43,807 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-18 13:03:43,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-18 13:03:43,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2024-11-18 13:03:43,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:03:43,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-18 13:03:43,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2024-11-18 13:03:43,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:03:43,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-18 13:03:43,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:03:43,884 INFO L349 Elim1Store]: treesize reduction 173, result has 0.6 percent of original size [2024-11-18 13:03:43,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 216 treesize of output 197 [2024-11-18 13:03:43,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:03:43,903 INFO L349 Elim1Store]: treesize reduction 33, result has 29.8 percent of original size [2024-11-18 13:03:43,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 99 [2024-11-18 13:03:43,925 INFO L349 Elim1Store]: treesize reduction 32, result has 48.4 percent of original size [2024-11-18 13:03:43,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 61 [2024-11-18 13:03:43,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-18 13:03:43,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-18 13:03:43,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-18 13:03:43,959 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2024-11-18 13:03:43,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-18 13:03:43,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-18 13:03:44,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-18 13:03:44,281 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-18 13:03:44,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 23 [2024-11-18 13:03:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:03:44,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:03:44,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:03:44,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 191 [2024-11-18 13:03:44,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:03:44,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 155 [2024-11-18 13:03:44,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:03:44,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1837 treesize of output 1526 [2024-11-18 13:03:44,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:03:44,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1517 treesize of output 998 [2024-11-18 13:03:48,091 INFO L349 Elim1Store]: treesize reduction 1107, result has 42.6 percent of original size [2024-11-18 13:03:48,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 28 new quantified variables, introduced 171 case distinctions, treesize of input 22867882 treesize of output 16045966 [2024-11-18 13:04:20,537 WARN L286 SmtUtils]: Spent 32.41s on a formula simplification. DAG size of input: 8570 DAG size of output: 2042 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-18 13:04:23,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:04:23,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1527931 treesize of output 1363294 [2024-11-18 13:04:53,468 WARN L286 SmtUtils]: Spent 30.35s on a formula simplification. DAG size of input: 5955 DAG size of output: 2237 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-18 13:04:56,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:04:56,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 203058 treesize of output 185024 [2024-11-18 13:05:02,383 WARN L286 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 2417 DAG size of output: 2415 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-18 13:05:02,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:05:02,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 229495 treesize of output 209711