./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/sll-rb-sentinel-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 19:33:32,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 19:33:32,874 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 19:33:32,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 19:33:32,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 19:33:32,900 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 19:33:32,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 19:33:32,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 19:33:32,901 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 19:33:32,904 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 19:33:32,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 19:33:32,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 19:33:32,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 19:33:32,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 19:33:32,905 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 19:33:32,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 19:33:32,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 19:33:32,907 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 19:33:32,907 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 19:33:32,908 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 19:33:32,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 19:33:32,908 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 19:33:32,908 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 19:33:32,908 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 19:33:32,908 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 19:33:32,909 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 19:33:32,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 19:33:32,909 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 19:33:32,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 19:33:32,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 19:33:32,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 19:33:32,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 19:33:32,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 19:33:32,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 19:33:32,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 19:33:32,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 19:33:32,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 19:33:32,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 19:33:32,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 19:33:32,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 19:33:32,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 19:33:32,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 19:33:32,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2024-11-11 19:33:33,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 19:33:33,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 19:33:33,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 19:33:33,141 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 19:33:33,141 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 19:33:33,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2024-11-11 19:33:34,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 19:33:34,487 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 19:33:34,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2024-11-11 19:33:34,504 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c89db49/2e4aeb695c274417b8a77bc7fde6bd1a/FLAG1b27dfb12 [2024-11-11 19:33:34,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c89db49/2e4aeb695c274417b8a77bc7fde6bd1a [2024-11-11 19:33:34,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 19:33:34,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 19:33:34,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 19:33:34,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 19:33:34,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 19:33:34,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3cc318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34, skipping insertion in model container [2024-11-11 19:33:34,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 19:33:34,837 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/sll-rb-sentinel-1.i[22534,22547] [2024-11-11 19:33:34,840 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/sll-rb-sentinel-1.i[22606,22619] [2024-11-11 19:33:34,841 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/sll-rb-sentinel-1.i[22746,22759] [2024-11-11 19:33:34,842 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/sll-rb-sentinel-1.i[22820,22833] [2024-11-11 19:33:34,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 19:33:34,855 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 19:33:34,887 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/sll-rb-sentinel-1.i[22534,22547] [2024-11-11 19:33:34,888 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/sll-rb-sentinel-1.i[22606,22619] [2024-11-11 19:33:34,889 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/sll-rb-sentinel-1.i[22746,22759] [2024-11-11 19:33:34,889 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/sll-rb-sentinel-1.i[22820,22833] [2024-11-11 19:33:34,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 19:33:34,914 INFO L204 MainTranslator]: Completed translation [2024-11-11 19:33:34,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34 WrapperNode [2024-11-11 19:33:34,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 19:33:34,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 19:33:34,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 19:33:34,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 19:33:34,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,952 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 123 [2024-11-11 19:33:34,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 19:33:34,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 19:33:34,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 19:33:34,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 19:33:34,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,974 INFO L175 MemorySlicer]: Split 24 memory accesses to 2 slices as follows [2, 22]. 92 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 11 writes are split as follows [0, 11]. [2024-11-11 19:33:34,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 19:33:34,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 19:33:34,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 19:33:34,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 19:33:34,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (1/1) ... [2024-11-11 19:33:34,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 19:33:35,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:33:35,017 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) [2024-11-11 19:33:35,020 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 [2024-11-11 19:33:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 19:33:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 19:33:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 19:33:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 19:33:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-11 19:33:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 19:33:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-11 19:33:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-11 19:33:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-11 19:33:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-11 19:33:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 19:33:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 19:33:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 19:33:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 19:33:35,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 19:33:35,175 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 19:33:35,176 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 19:33:35,355 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-11 19:33:35,356 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 19:33:35,369 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 19:33:35,369 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-11 19:33:35,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 07:33:35 BoogieIcfgContainer [2024-11-11 19:33:35,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 19:33:35,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 19:33:35,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 19:33:35,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 19:33:35,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 07:33:34" (1/3) ... [2024-11-11 19:33:35,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f9c139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 07:33:35, skipping insertion in model container [2024-11-11 19:33:35,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:33:34" (2/3) ... [2024-11-11 19:33:35,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f9c139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 07:33:35, skipping insertion in model container [2024-11-11 19:33:35,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 07:33:35" (3/3) ... [2024-11-11 19:33:35,378 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2024-11-11 19:33:35,392 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 19:33:35,393 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-11 19:33:35,440 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 19:33:35,445 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;@50c596c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 19:33:35,445 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-11 19:33:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 states have internal predecessors, (53), 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) [2024-11-11 19:33:35,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-11 19:33:35,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:33:35,453 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-11 19:33:35,454 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-11 19:33:35,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:33:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2024-11-11 19:33:35,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:33:35,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317210334] [2024-11-11 19:33:35,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:35,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:33:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:33:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317210334] [2024-11-11 19:33:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317210334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:33:35,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:33:35,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 19:33:35,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799091840] [2024-11-11 19:33:35,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:33:35,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 19:33:35,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:33:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 19:33:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 19:33:35,659 INFO L87 Difference]: Start difference. First operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 states have internal predecessors, (53), 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) [2024-11-11 19:33:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:33:35,671 INFO L93 Difference]: Finished difference Result 61 states and 98 transitions. [2024-11-11 19:33:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 19:33:35,673 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 [2024-11-11 19:33:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:33:35,679 INFO L225 Difference]: With dead ends: 61 [2024-11-11 19:33:35,679 INFO L226 Difference]: Without dead ends: 27 [2024-11-11 19:33:35,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 19:33:35,684 INFO L435 NwaCegarLoop]: 38 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, 38 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 [2024-11-11 19:33:35,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 19:33:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-11 19:33:35,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-11 19:33:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 26 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) [2024-11-11 19:33:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-11 19:33:35,714 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 6 [2024-11-11 19:33:35,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:33:35,714 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-11 19:33:35,715 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) [2024-11-11 19:33:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-11 19:33:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-11 19:33:35,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:33:35,716 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:33:35,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 19:33:35,716 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-11 19:33:35,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:33:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2024-11-11 19:33:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:33:35,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785200263] [2024-11-11 19:33:35,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:33:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:35,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:33:35,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785200263] [2024-11-11 19:33:35,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785200263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:33:35,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:33:35,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 19:33:35,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268994401] [2024-11-11 19:33:35,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:33:35,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 19:33:35,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:33:35,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 19:33:35,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 19:33:35,930 INFO L87 Difference]: Start difference. First operand 27 states and 30 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) [2024-11-11 19:33:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:33:35,980 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-11-11 19:33:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 19:33:35,981 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 [2024-11-11 19:33:35,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:33:35,982 INFO L225 Difference]: With dead ends: 33 [2024-11-11 19:33:35,982 INFO L226 Difference]: Without dead ends: 31 [2024-11-11 19:33:35,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-11 19:33:35,983 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 19:33:35,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 19:33:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-11 19:33:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2024-11-11 19:33:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 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) [2024-11-11 19:33:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-11 19:33:35,988 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 7 [2024-11-11 19:33:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:33:35,988 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-11 19:33:35,988 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) [2024-11-11 19:33:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-11 19:33:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-11 19:33:35,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:33:35,989 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:33:35,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 19:33:35,989 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-11 19:33:35,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:33:35,990 INFO L85 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2024-11-11 19:33:35,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:33:35,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985389221] [2024-11-11 19:33:35,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:35,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:33:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:36,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:33:36,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985389221] [2024-11-11 19:33:36,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985389221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:33:36,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:33:36,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-11 19:33:36,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554092686] [2024-11-11 19:33:36,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:33:36,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 19:33:36,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:33:36,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 19:33:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 19:33:36,232 INFO L87 Difference]: Start difference. First operand 25 states and 28 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) [2024-11-11 19:33:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:33:36,361 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2024-11-11 19:33:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 19:33:36,362 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 [2024-11-11 19:33:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:33:36,362 INFO L225 Difference]: With dead ends: 57 [2024-11-11 19:33:36,362 INFO L226 Difference]: Without dead ends: 55 [2024-11-11 19:33:36,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-11 19:33:36,364 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:33:36,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 60 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:33:36,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-11 19:33:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2024-11-11 19:33:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.28125) internal successors, (41), 34 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) [2024-11-11 19:33:36,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-11 19:33:36,373 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 10 [2024-11-11 19:33:36,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:33:36,373 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-11 19:33:36,373 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) [2024-11-11 19:33:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-11 19:33:36,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-11 19:33:36,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:33:36,374 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:33:36,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 19:33:36,374 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-11 19:33:36,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:33:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2024-11-11 19:33:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:33:36,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477182250] [2024-11-11 19:33:36,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:36,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:33:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:36,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:33:36,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477182250] [2024-11-11 19:33:36,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477182250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:33:36,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693776322] [2024-11-11 19:33:36,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:36,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:33:36,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:33:36,801 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) [2024-11-11 19:33:36,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 19:33:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:36,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-11 19:33:36,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:33:36,951 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 [2024-11-11 19:33:36,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 19:33:36,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-11-11 19:33:36,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 19:33:37,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 19:33:37,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2024-11-11 19:33:37,045 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-11 19:33:37,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-11 19:33:37,067 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-11 19:33:37,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-11 19:33:37,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2024-11-11 19:33:37,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-11 19:33:37,129 INFO L349 Elim1Store]: treesize reduction 14, result has 39.1 percent of original size [2024-11-11 19:33:37,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-11 19:33:37,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-11 19:33:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:37,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:33:37,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:37,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2024-11-11 19:33:37,381 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_2 (Array Int Int)) (v_ArrVal_208 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.base_30| Int)) (or (not (= (select v_arrayElimArr_2 4) 1)) (= (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_208) |v_ULTIMATE.start_main_~end~0#1.base_30| v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) 1))) is different from false [2024-11-11 19:33:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:37,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693776322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:33:37,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:33:37,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-11 19:33:37,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547943491] [2024-11-11 19:33:37,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:33:37,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-11 19:33:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:33:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-11 19:33:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=139, Unknown=1, NotChecked=24, Total=210 [2024-11-11 19:33:37,451 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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) [2024-11-11 19:33:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:33:37,667 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2024-11-11 19:33:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 19:33:37,668 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 [2024-11-11 19:33:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:33:37,669 INFO L225 Difference]: With dead ends: 42 [2024-11-11 19:33:37,669 INFO L226 Difference]: Without dead ends: 40 [2024-11-11 19:33:37,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=218, Unknown=1, NotChecked=32, Total=342 [2024-11-11 19:33:37,670 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 89 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:33:37,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 93 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 97 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2024-11-11 19:33:37,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-11 19:33:37,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2024-11-11 19:33:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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) [2024-11-11 19:33:37,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-11 19:33:37,677 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2024-11-11 19:33:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:33:37,677 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-11 19:33:37,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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) [2024-11-11 19:33:37,678 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-11 19:33:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-11 19:33:37,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:33:37,678 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:33:37,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 19:33:37,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:33:37,883 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-11 19:33:37,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:33:37,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1689639521, now seen corresponding path program 1 times [2024-11-11 19:33:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:33:37,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346041793] [2024-11-11 19:33:37,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:37,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:33:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:33:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346041793] [2024-11-11 19:33:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346041793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:33:37,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:33:37,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 19:33:37,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175821646] [2024-11-11 19:33:37,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:33:37,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 19:33:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:33:37,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 19:33:37,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 19:33:37,936 INFO L87 Difference]: Start difference. First operand 23 states and 26 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) [2024-11-11 19:33:38,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:33:38,002 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-11 19:33:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 19:33:38,003 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 [2024-11-11 19:33:38,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:33:38,004 INFO L225 Difference]: With dead ends: 38 [2024-11-11 19:33:38,004 INFO L226 Difference]: Without dead ends: 26 [2024-11-11 19:33:38,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 19:33:38,006 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:33:38,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 60 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:33:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-11 19:33:38,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-11 19:33:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 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) [2024-11-11 19:33:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-11 19:33:38,014 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2024-11-11 19:33:38,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:33:38,015 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-11 19:33:38,015 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) [2024-11-11 19:33:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-11 19:33:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-11 19:33:38,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:33:38,016 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:33:38,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 19:33:38,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-11 19:33:38,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:33:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2084817261, now seen corresponding path program 1 times [2024-11-11 19:33:38,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:33:38,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606107530] [2024-11-11 19:33:38,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:33:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:38,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:33:38,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606107530] [2024-11-11 19:33:38,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606107530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:33:38,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256399376] [2024-11-11 19:33:38,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:38,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:33:38,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:33:38,116 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) [2024-11-11 19:33:38,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 19:33:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:38,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 19:33:38,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:33:38,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2024-11-11 19:33:38,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2024-11-11 19:33:38,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2024-11-11 19:33:38,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 22 [2024-11-11 19:33:38,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-11 19:33:38,246 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-11 19:33:38,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 78 [2024-11-11 19:33:38,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2024-11-11 19:33:38,274 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-11 19:33:38,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-11 19:33:38,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 19:33:38,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 19 [2024-11-11 19:33:38,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:38,580 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 66 treesize of output 62 [2024-11-11 19:33:38,586 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 51 [2024-11-11 19:33:38,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2024-11-11 19:33:38,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-11 19:33:38,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-11-11 19:33:38,627 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 [2024-11-11 19:33:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:38,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:33:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:38,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256399376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:33:38,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:33:38,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-11 19:33:38,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663606136] [2024-11-11 19:33:38,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:33:38,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-11 19:33:38,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:33:38,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-11 19:33:38,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2024-11-11 19:33:38,691 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 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) [2024-11-11 19:33:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:33:38,829 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2024-11-11 19:33:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 19:33:38,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 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) Word has length 17 [2024-11-11 19:33:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:33:38,830 INFO L225 Difference]: With dead ends: 49 [2024-11-11 19:33:38,830 INFO L226 Difference]: Without dead ends: 27 [2024-11-11 19:33:38,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=108, Unknown=1, NotChecked=0, Total=156 [2024-11-11 19:33:38,830 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:33:38,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 74 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 51 Invalid, 4 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:33:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-11 19:33:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-11 19:33:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 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) [2024-11-11 19:33:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-11 19:33:38,835 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2024-11-11 19:33:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:33:38,835 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-11 19:33:38,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 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) [2024-11-11 19:33:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-11 19:33:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-11 19:33:38,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:33:38,835 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:33:38,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 19:33:39,039 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,SelfDestructingSolverStorable5 [2024-11-11 19:33:39,040 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-11 19:33:39,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:33:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1088473273, now seen corresponding path program 1 times [2024-11-11 19:33:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:33:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034025692] [2024-11-11 19:33:39,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:39,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:33:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:39,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:33:39,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034025692] [2024-11-11 19:33:39,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034025692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:33:39,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052576024] [2024-11-11 19:33:39,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:39,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:33:39,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:33:39,658 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) [2024-11-11 19:33:39,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 19:33:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:39,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-11 19:33:39,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:33:39,768 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-11 19:33:39,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-11 19:33:39,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-11 19:33:39,821 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-11 19:33:39,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-11 19:33:39,827 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 [2024-11-11 19:33:39,848 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2024-11-11 19:33:39,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2024-11-11 19:33:39,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-11 19:33:39,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-11 19:33:39,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 19:33:39,915 INFO L349 Elim1Store]: treesize reduction 33, result has 29.8 percent of original size [2024-11-11 19:33:39,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 54 [2024-11-11 19:33:39,940 INFO L349 Elim1Store]: treesize reduction 64, result has 41.8 percent of original size [2024-11-11 19:33:39,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 51 [2024-11-11 19:33:39,946 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 [2024-11-11 19:33:39,976 INFO L349 Elim1Store]: treesize reduction 20, result has 67.2 percent of original size [2024-11-11 19:33:39,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 53 [2024-11-11 19:33:39,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 1 [2024-11-11 19:33:40,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 19:33:40,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-11 19:33:40,236 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-11 19:33:40,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 27 [2024-11-11 19:33:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:40,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:33:40,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:40,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2024-11-11 19:33:40,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:40,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2024-11-11 19:33:40,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:40,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 65 [2024-11-11 19:33:40,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:40,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2024-11-11 19:33:40,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:40,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 1632 treesize of output 1245 [2024-11-11 19:33:40,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:40,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 982 treesize of output 830 [2024-11-11 19:33:40,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:40,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 701 treesize of output 635 [2024-11-11 19:33:40,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:40,546 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 1098 treesize of output 1033 [2024-11-11 19:33:40,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:40,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 502 treesize of output 490 [2024-11-11 19:33:40,731 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 478 treesize of output 442 [2024-11-11 19:33:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:47,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052576024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:33:47,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:33:47,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 20 [2024-11-11 19:33:47,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785790166] [2024-11-11 19:33:47,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:33:47,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-11 19:33:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:33:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-11 19:33:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-11-11 19:33:47,029 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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) [2024-11-11 19:33:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:33:48,166 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2024-11-11 19:33:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-11 19:33:48,167 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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 20 [2024-11-11 19:33:48,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:33:48,168 INFO L225 Difference]: With dead ends: 125 [2024-11-11 19:33:48,168 INFO L226 Difference]: Without dead ends: 123 [2024-11-11 19:33:48,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=1055, Unknown=1, NotChecked=0, Total=1260 [2024-11-11 19:33:48,171 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 229 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 53 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 19:33:48,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 340 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 377 Invalid, 25 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 19:33:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-11 19:33:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 45. [2024-11-11 19:33:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 44 states have internal predecessors, (53), 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) [2024-11-11 19:33:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-11 19:33:48,180 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 20 [2024-11-11 19:33:48,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:33:48,180 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-11 19:33:48,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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) [2024-11-11 19:33:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-11 19:33:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-11 19:33:48,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:33:48,181 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:33:48,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 19:33:48,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:33:48,382 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-11 19:33:48,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:33:48,383 INFO L85 PathProgramCache]: Analyzing trace with hash -67404919, now seen corresponding path program 1 times [2024-11-11 19:33:48,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:33:48,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42858147] [2024-11-11 19:33:48,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:48,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:33:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:48,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:33:48,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42858147] [2024-11-11 19:33:48,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42858147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:33:48,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415059252] [2024-11-11 19:33:48,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:48,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:33:48,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:33:48,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:33:48,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 19:33:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:48,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-11 19:33:48,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:33:48,841 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 [2024-11-11 19:33:48,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 19:33:48,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-11-11 19:33:48,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-11 19:33:48,874 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-11 19:33:48,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-11 19:33:48,880 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 [2024-11-11 19:33:48,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-11 19:33:48,896 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-11 19:33:48,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-11 19:33:48,902 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 [2024-11-11 19:33:48,911 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-11 19:33:48,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-11 19:33:48,949 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-11 19:33:48,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2024-11-11 19:33:48,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 19:33:48,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-11 19:33:49,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-11 19:33:49,036 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 [2024-11-11 19:33:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:49,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:33:49,129 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 69 treesize of output 49 [2024-11-11 19:33:49,133 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_529 (Array Int Int))) (= |c_ULTIMATE.start_main_~end~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_529) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (forall ((v_ArrVal_530 (Array Int Int))) (= |c_ULTIMATE.start_main_~end~0#1.offset| (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_530) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2024-11-11 19:33:49,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:49,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2024-11-11 19:33:49,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:49,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-11 19:33:49,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:49,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2024-11-11 19:33:49,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:49,171 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 50 treesize of output 53 [2024-11-11 19:33:49,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2024-11-11 19:33:49,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2024-11-11 19:33:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:49,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415059252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:33:49,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:33:49,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2024-11-11 19:33:49,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148491436] [2024-11-11 19:33:49,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:33:49,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-11 19:33:49,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:33:49,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-11 19:33:49,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=406, Unknown=1, NotChecked=40, Total=506 [2024-11-11 19:33:49,242 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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) [2024-11-11 19:33:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:33:49,663 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2024-11-11 19:33:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-11 19:33:49,664 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 20 [2024-11-11 19:33:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:33:49,664 INFO L225 Difference]: With dead ends: 84 [2024-11-11 19:33:49,664 INFO L226 Difference]: Without dead ends: 72 [2024-11-11 19:33:49,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=765, Unknown=1, NotChecked=58, Total=992 [2024-11-11 19:33:49,665 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 77 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:33:49,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 383 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 369 Invalid, 0 Unknown, 50 Unchecked, 0.2s Time] [2024-11-11 19:33:49,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-11 19:33:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2024-11-11 19:33:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 53 states have internal predecessors, (62), 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) [2024-11-11 19:33:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-11 19:33:49,674 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 20 [2024-11-11 19:33:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:33:49,674 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-11 19:33:49,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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) [2024-11-11 19:33:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-11 19:33:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-11 19:33:49,675 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:33:49,675 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:33:49,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 19:33:49,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:33:49,879 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-11 19:33:49,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:33:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash 299800945, now seen corresponding path program 1 times [2024-11-11 19:33:49,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:33:49,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516890703] [2024-11-11 19:33:49,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:49,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:33:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:50,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:33:50,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516890703] [2024-11-11 19:33:50,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516890703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:33:50,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376170054] [2024-11-11 19:33:50,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:33:50,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:33:50,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:33:50,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:33:50,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 19:33:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:33:50,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-11 19:33:50,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:33:50,500 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 [2024-11-11 19:33:50,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 19:33:50,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-11-11 19:33:50,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-11 19:33:50,533 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-11 19:33:50,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-11 19:33:50,536 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 [2024-11-11 19:33:50,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-11 19:33:50,548 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-11 19:33:50,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-11 19:33:50,552 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 [2024-11-11 19:33:50,564 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-11 19:33:50,564 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 [2024-11-11 19:33:50,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 19:33:50,612 INFO L349 Elim1Store]: treesize reduction 33, result has 29.8 percent of original size [2024-11-11 19:33:50,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 48 [2024-11-11 19:33:50,616 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 27 treesize of output 15 [2024-11-11 19:33:50,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 1 [2024-11-11 19:33:50,636 INFO L349 Elim1Store]: treesize reduction 64, result has 41.8 percent of original size [2024-11-11 19:33:50,637 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 42 treesize of output 51 [2024-11-11 19:33:50,639 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 [2024-11-11 19:33:50,649 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 [2024-11-11 19:33:50,666 INFO L349 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2024-11-11 19:33:50,666 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 28 treesize of output 38 [2024-11-11 19:33:50,921 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-11 19:33:50,921 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 85 treesize of output 40 [2024-11-11 19:33:50,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-11 19:33:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:33:50,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:33:51,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:51,114 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 139 treesize of output 133 [2024-11-11 19:33:51,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:51,120 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 151 treesize of output 145 [2024-11-11 19:33:51,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:51,129 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 349 treesize of output 348 [2024-11-11 19:33:51,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:51,410 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 425 treesize of output 370 [2024-11-11 19:33:51,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:51,421 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 361 treesize of output 306 [2024-11-11 19:33:51,765 INFO L349 Elim1Store]: treesize reduction 52, result has 84.9 percent of original size [2024-11-11 19:33:51,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 5941 treesize of output 4248 [2024-11-11 19:33:54,235 INFO L349 Elim1Store]: treesize reduction 1252, result has 50.3 percent of original size [2024-11-11 19:33:54,236 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 20 new quantified variables, introduced 171 case distinctions, treesize of input 15318 treesize of output 15185 [2024-11-11 19:33:55,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:55,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3708 treesize of output 3676 [2024-11-11 19:33:55,851 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 3668 treesize of output 3592 [2024-11-11 19:33:56,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:56,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2989 treesize of output 2989 [2024-11-11 19:33:56,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:56,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3568 treesize of output 3424 [2024-11-11 19:33:56,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:56,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3396 treesize of output 3356 [2024-11-11 19:33:57,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:57,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2785 treesize of output 2731 [2024-11-11 19:33:57,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:57,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3264 treesize of output 3016 [2024-11-11 19:33:57,929 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 2982 treesize of output 2900 [2024-11-11 19:33:58,277 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 2405 treesize of output 2333 [2024-11-11 19:33:58,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:58,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 2365 treesize of output 2347 [2024-11-11 19:33:59,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:33:59,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 2357 treesize of output 2379 [2024-11-11 19:34:00,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:34:00,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2303 treesize of output 2207 [2024-11-11 19:34:00,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:34:00,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 2237 treesize of output 2263 [2024-11-11 19:34:01,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:34:01,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2203 treesize of output 2129 [2024-11-11 19:34:02,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 19:34:02,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 2199 treesize of output 2171 [2024-11-11 19:34:02,977 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 2119 treesize of output 2051