./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b0bf6ee66b233cfe70507a3d8d55aa219725b8ce14e12bc2fdcf83f18b236eff --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 20:41:00,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 20:41:00,727 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 20:41:00,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 20:41:00,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 20:41:00,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 20:41:00,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 20:41:00,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 20:41:00,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 20:41:00,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 20:41:00,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 20:41:00,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 20:41:00,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 20:41:00,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 20:41:00,758 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 20:41:00,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 20:41:00,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 20:41:00,759 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 20:41:00,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 20:41:00,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 20:41:00,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 20:41:00,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 20:41:00,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 20:41:00,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 20:41:00,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 20:41:00,762 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 20:41:00,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 20:41:00,762 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 20:41:00,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 20:41:00,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 20:41:00,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 20:41:00,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 20:41:00,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 20:41:00,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 20:41:00,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 20:41:00,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 20:41:00,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 20:41:00,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 20:41:00,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 20:41:00,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 20:41:00,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 20:41:00,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 20:41:00,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0bf6ee66b233cfe70507a3d8d55aa219725b8ce14e12bc2fdcf83f18b236eff [2024-11-19 20:41:00,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 20:41:00,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 20:41:00,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 20:41:00,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 20:41:00,974 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 20:41:00,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-2.i [2024-11-19 20:41:02,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 20:41:02,304 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 20:41:02,304 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-2.i [2024-11-19 20:41:02,316 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/062e67d2f/50a64544d653485f9a7fe04622009031/FLAG0367a3b39 [2024-11-19 20:41:02,328 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/062e67d2f/50a64544d653485f9a7fe04622009031 [2024-11-19 20:41:02,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 20:41:02,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 20:41:02,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 20:41:02,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 20:41:02,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 20:41:02,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60379f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02, skipping insertion in model container [2024-11-19 20:41:02,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 20:41:02,613 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/ldv-sets/test_add-2.i[25793,25806] [2024-11-19 20:41:02,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 20:41:02,623 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 20:41:02,684 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/ldv-sets/test_add-2.i[25793,25806] [2024-11-19 20:41:02,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 20:41:02,731 INFO L204 MainTranslator]: Completed translation [2024-11-19 20:41:02,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02 WrapperNode [2024-11-19 20:41:02,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 20:41:02,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 20:41:02,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 20:41:02,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 20:41:02,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,766 INFO L138 Inliner]: procedures = 135, calls = 46, calls flagged for inlining = 11, calls inlined = 7, statements flattened = 56 [2024-11-19 20:41:02,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 20:41:02,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 20:41:02,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 20:41:02,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 20:41:02,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,789 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 5 writes are split as follows [0, 5]. [2024-11-19 20:41:02,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,794 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 20:41:02,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 20:41:02,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 20:41:02,801 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 20:41:02,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (1/1) ... [2024-11-19 20:41:02,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 20:41:02,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:02,832 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) [2024-11-19 20:41:02,839 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 [2024-11-19 20:41:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 20:41:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 20:41:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-19 20:41:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-19 20:41:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 20:41:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 20:41:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 20:41:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 20:41:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 20:41:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 20:41:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-19 20:41:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-19 20:41:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 20:41:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 20:41:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 20:41:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 20:41:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 20:41:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 20:41:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 20:41:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 20:41:02,997 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 20:41:02,998 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 20:41:03,142 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-19 20:41:03,142 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 20:41:03,154 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 20:41:03,154 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 20:41:03,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:41:03 BoogieIcfgContainer [2024-11-19 20:41:03,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 20:41:03,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 20:41:03,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 20:41:03,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 20:41:03,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:41:02" (1/3) ... [2024-11-19 20:41:03,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5824cd3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:41:03, skipping insertion in model container [2024-11-19 20:41:03,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:02" (2/3) ... [2024-11-19 20:41:03,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5824cd3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:41:03, skipping insertion in model container [2024-11-19 20:41:03,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:41:03" (3/3) ... [2024-11-19 20:41:03,160 INFO L112 eAbstractionObserver]: Analyzing ICFG test_add-2.i [2024-11-19 20:41:03,172 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 20:41:03,172 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 20:41:03,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 20:41:03,216 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;@7983c2a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 20:41:03,216 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 20:41:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 20:41:03,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 20:41:03,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:03,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:03,227 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:03,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1385480168, now seen corresponding path program 1 times [2024-11-19 20:41:03,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:03,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101530900] [2024-11-19 20:41:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:03,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:03,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 20:41:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:03,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 20:41:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 20:41:03,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:03,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101530900] [2024-11-19 20:41:03,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101530900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:41:03,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074341076] [2024-11-19 20:41:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:03,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:03,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:03,694 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) [2024-11-19 20:41:03,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 20:41:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:03,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 20:41:03,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:41:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 20:41:03,847 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 20:41:03,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074341076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:41:03,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 20:41:03,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-19 20:41:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096041871] [2024-11-19 20:41:03,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:41:03,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 20:41:03,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 20:41:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 20:41:03,872 INFO L87 Difference]: Start difference. First operand has 31 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:41:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:03,904 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-11-19 20:41:03,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 20:41:03,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-19 20:41:03,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:03,911 INFO L225 Difference]: With dead ends: 63 [2024-11-19 20:41:03,912 INFO L226 Difference]: Without dead ends: 29 [2024-11-19 20:41:03,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 20:41:03,916 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:03,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 20:41:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-19 20:41:03,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-19 20:41:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 20:41:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-19 20:41:03,941 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2024-11-19 20:41:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:03,941 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-19 20:41:03,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:41:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-19 20:41:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 20:41:03,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:03,943 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:03,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 20:41:04,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 20:41:04,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:04,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:04,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1334883823, now seen corresponding path program 1 times [2024-11-19 20:41:04,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:04,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725558780] [2024-11-19 20:41:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:04,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:04,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 20:41:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:04,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 20:41:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 20:41:04,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725558780] [2024-11-19 20:41:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725558780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:41:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187761381] [2024-11-19 20:41:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:04,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:04,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:04,323 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) [2024-11-19 20:41:04,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 20:41:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:04,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 20:41:04,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:41:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 20:41:04,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 20:41:04,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187761381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:41:04,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 20:41:04,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-19 20:41:04,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514266915] [2024-11-19 20:41:04,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:41:04,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 20:41:04,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:04,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 20:41:04,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 20:41:04,559 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 20:41:04,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:04,720 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2024-11-19 20:41:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 20:41:04,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-19 20:41:04,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:04,722 INFO L225 Difference]: With dead ends: 78 [2024-11-19 20:41:04,722 INFO L226 Difference]: Without dead ends: 38 [2024-11-19 20:41:04,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-19 20:41:04,724 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:04,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 107 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 20:41:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-19 20:41:04,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2024-11-19 20:41:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 20:41:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2024-11-19 20:41:04,733 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 20 [2024-11-19 20:41:04,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:04,733 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2024-11-19 20:41:04,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 20:41:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2024-11-19 20:41:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 20:41:04,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:04,734 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:04,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 20:41:04,934 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,SelfDestructingSolverStorable1 [2024-11-19 20:41:04,935 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:04,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash 23912952, now seen corresponding path program 1 times [2024-11-19 20:41:04,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:04,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054584932] [2024-11-19 20:41:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:04,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 20:41:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:04,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 20:41:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 20:41:04,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:04,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054584932] [2024-11-19 20:41:04,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054584932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:41:04,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572435269] [2024-11-19 20:41:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:04,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:04,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:04,983 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) [2024-11-19 20:41:04,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 20:41:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:05,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 20:41:05,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:41:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 20:41:05,043 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 20:41:05,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572435269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:41:05,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 20:41:05,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-19 20:41:05,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872057870] [2024-11-19 20:41:05,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:41:05,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 20:41:05,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 20:41:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 20:41:05,044 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 20:41:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:05,057 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2024-11-19 20:41:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 20:41:05,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-19 20:41:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:05,058 INFO L225 Difference]: With dead ends: 43 [2024-11-19 20:41:05,058 INFO L226 Difference]: Without dead ends: 32 [2024-11-19 20:41:05,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 20:41:05,059 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:05,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 20:41:05,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-19 20:41:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-19 20:41:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 20:41:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2024-11-19 20:41:05,066 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2024-11-19 20:41:05,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:05,066 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2024-11-19 20:41:05,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 20:41:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2024-11-19 20:41:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 20:41:05,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:05,067 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:05,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 20:41:05,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:05,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:05,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1578740613, now seen corresponding path program 1 times [2024-11-19 20:41:05,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:05,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206078310] [2024-11-19 20:41:05,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:05,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:05,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 20:41:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:05,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 20:41:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:05,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 20:41:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 20:41:05,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206078310] [2024-11-19 20:41:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206078310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:41:05,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 20:41:05,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 20:41:05,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578609098] [2024-11-19 20:41:05,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:41:05,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 20:41:05,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 20:41:05,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-19 20:41:05,713 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 20:41:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:06,047 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2024-11-19 20:41:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 20:41:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-11-19 20:41:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:06,048 INFO L225 Difference]: With dead ends: 42 [2024-11-19 20:41:06,048 INFO L226 Difference]: Without dead ends: 35 [2024-11-19 20:41:06,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-11-19 20:41:06,050 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 56 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:06,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 82 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 20:41:06,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-19 20:41:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-11-19 20:41:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 20:41:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2024-11-19 20:41:06,061 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 29 [2024-11-19 20:41:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:06,061 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2024-11-19 20:41:06,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 20:41:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2024-11-19 20:41:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 20:41:06,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:06,062 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:06,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 20:41:06,062 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:06,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash 600563240, now seen corresponding path program 1 times [2024-11-19 20:41:06,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:06,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089934353] [2024-11-19 20:41:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 20:41:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 20:41:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 20:41:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 20:41:07,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:07,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089934353] [2024-11-19 20:41:07,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089934353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:41:07,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735210824] [2024-11-19 20:41:07,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:07,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:07,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:07,286 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) [2024-11-19 20:41:07,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 20:41:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:07,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-19 20:41:07,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:41:07,510 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 20:41:07,511 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 [2024-11-19 20:41:07,610 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 11 treesize of output 7 [2024-11-19 20:41:07,705 INFO L349 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2024-11-19 20:41:07,706 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 36 treesize of output 64 [2024-11-19 20:41:07,712 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 [2024-11-19 20:41:07,728 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 [2024-11-19 20:41:07,777 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:07,778 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 0 case distinctions, treesize of input 21 treesize of output 5 [2024-11-19 20:41:07,780 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 [2024-11-19 20:41:07,785 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 23 treesize of output 1 [2024-11-19 20:41:07,839 INFO L349 Elim1Store]: treesize reduction 135, result has 13.5 percent of original size [2024-11-19 20:41:07,840 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 3 case distinctions, treesize of input 59 treesize of output 28 [2024-11-19 20:41:07,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:07,864 INFO L349 Elim1Store]: treesize reduction 49, result has 15.5 percent of original size [2024-11-19 20:41:07,864 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 1 case distinctions, treesize of input 37 treesize of output 24 [2024-11-19 20:41:07,918 INFO L349 Elim1Store]: treesize reduction 36, result has 52.0 percent of original size [2024-11-19 20:41:07,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 130 [2024-11-19 20:41:07,932 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 139 treesize of output 111 [2024-11-19 20:41:07,941 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 [2024-11-19 20:41:07,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 77 treesize of output 60 [2024-11-19 20:41:08,102 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 162 treesize of output 134 [2024-11-19 20:41:08,112 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 8 treesize of output 7 [2024-11-19 20:41:08,245 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 98 treesize of output 75 [2024-11-19 20:41:08,488 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:08,491 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 9 treesize of output 8 [2024-11-19 20:41:08,495 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 [2024-11-19 20:41:08,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:08,503 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 14 treesize of output 8 [2024-11-19 20:41:08,507 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 [2024-11-19 20:41:08,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:08,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:08,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 62 [2024-11-19 20:41:08,534 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 118 treesize of output 105 [2024-11-19 20:41:08,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:08,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:08,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-19 20:41:08,559 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 [2024-11-19 20:41:08,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:08,572 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:08,575 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 55 treesize of output 52 [2024-11-19 20:41:08,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:08,587 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:08,590 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 18 [2024-11-19 20:41:08,594 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 8 treesize of output 7 [2024-11-19 20:41:08,602 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:08,603 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 58 treesize of output 24 [2024-11-19 20:41:08,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 20:41:08,620 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:08,621 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 69 treesize of output 35 [2024-11-19 20:41:08,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:08,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 7 [2024-11-19 20:41:08,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:08,642 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:08,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2024-11-19 20:41:08,649 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 [2024-11-19 20:41:08,658 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:08,659 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 50 treesize of output 28 [2024-11-19 20:41:08,664 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 19 treesize of output 7 [2024-11-19 20:41:09,338 INFO L349 Elim1Store]: treesize reduction 77, result has 1.3 percent of original size [2024-11-19 20:41:09,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 383 treesize of output 434 [2024-11-19 20:41:09,587 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 44 treesize of output 15 [2024-11-19 20:41:09,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:09,725 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:09,726 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:09,727 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 65 treesize of output 15 [2024-11-19 20:41:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 20:41:12,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 20:41:13,415 INFO L349 Elim1Store]: treesize reduction 413, result has 30.2 percent of original size [2024-11-19 20:41:13,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 46 case distinctions, treesize of input 30026 treesize of output 23896 [2024-11-19 20:41:14,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 20:41:14,044 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 1335316 treesize of output 1309572 [2024-11-19 20:41:15,291 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 24180 treesize of output 24012 [2024-11-19 20:41:15,612 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 26076 treesize of output 25676 [2024-11-19 20:41:16,462 INFO L349 Elim1Store]: treesize reduction 65, result has 82.0 percent of original size [2024-11-19 20:41:16,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 25667 treesize of output 24747 [2024-11-19 20:41:17,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 20:41:17,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 25693 treesize of output 25258