./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_add-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/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 0.3.0-?-8fc3dc6-m [2025-03-16 17:33:34,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 17:33:34,847 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 17:33:34,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 17:33:34,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 17:33:34,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 17:33:34,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 17:33:34,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 17:33:34,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 17:33:34,877 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 17:33:34,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 17:33:34,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 17:33:34,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 17:33:34,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 17:33:34,878 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 17:33:34,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 17:33:34,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 17:33:34,880 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 17:33:34,880 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 17:33:34,880 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 17:33:34,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 17:33:34,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 17:33:34,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 17:33:34,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:33:34,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 17:33:34,881 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/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 [2025-03-16 17:33:35,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 17:33:35,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 17:33:35,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 17:33:35,147 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 17:33:35,147 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 17:33:35,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_add-2.i [2025-03-16 17:33:36,271 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf0ac6359/773f0bec146643048cf6700a323996ce/FLAGad5863c6e [2025-03-16 17:33:36,507 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 17:33:36,507 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-2.i [2025-03-16 17:33:36,522 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf0ac6359/773f0bec146643048cf6700a323996ce/FLAGad5863c6e [2025-03-16 17:33:36,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf0ac6359/773f0bec146643048cf6700a323996ce [2025-03-16 17:33:36,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 17:33:36,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 17:33:36,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 17:33:36,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 17:33:36,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 17:33:36,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:33:36" (1/1) ... [2025-03-16 17:33:36,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f329753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:36, skipping insertion in model container [2025-03-16 17:33:36,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:33:36" (1/1) ... [2025-03-16 17:33:36,868 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 17:33:37,045 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] [2025-03-16 17:33:37,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:33:37,056 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 17:33:37,097 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] [2025-03-16 17:33:37,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:33:37,119 INFO L204 MainTranslator]: Completed translation [2025-03-16 17:33:37,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37 WrapperNode [2025-03-16 17:33:37,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 17:33:37,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 17:33:37,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 17:33:37,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 17:33:37,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,145 INFO L138 Inliner]: procedures = 135, calls = 46, calls flagged for inlining = 11, calls inlined = 7, statements flattened = 56 [2025-03-16 17:33:37,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 17:33:37,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 17:33:37,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 17:33:37,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 17:33:37,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,158 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,172 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]. [2025-03-16 17:33:37,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,176 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 17:33:37,181 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 17:33:37,181 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 17:33:37,181 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 17:33:37,186 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (1/1) ... [2025-03-16 17:33:37,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:33:37,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:37,209 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) [2025-03-16 17:33:37,212 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 [2025-03-16 17:33:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 17:33:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2025-03-16 17:33:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2025-03-16 17:33:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 17:33:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 17:33:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 17:33:37,304 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 17:33:37,305 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 17:33:37,435 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2025-03-16 17:33:37,435 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 17:33:37,446 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 17:33:37,446 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 17:33:37,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:33:37 BoogieIcfgContainer [2025-03-16 17:33:37,447 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 17:33:37,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 17:33:37,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 17:33:37,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 17:33:37,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 05:33:36" (1/3) ... [2025-03-16 17:33:37,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a67c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:33:37, skipping insertion in model container [2025-03-16 17:33:37,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:37" (2/3) ... [2025-03-16 17:33:37,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a67c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:33:37, skipping insertion in model container [2025-03-16 17:33:37,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:33:37" (3/3) ... [2025-03-16 17:33:37,457 INFO L128 eAbstractionObserver]: Analyzing ICFG test_add-2.i [2025-03-16 17:33:37,472 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 17:33:37,473 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test_add-2.i that has 3 procedures, 25 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 17:33:37,514 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 17:33:37,522 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;@2d74bee3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 17:33:37,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 17:33:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 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) [2025-03-16 17:33:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-16 17:33:37,531 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:37,532 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:37,532 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:37,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash -828071000, now seen corresponding path program 1 times [2025-03-16 17:33:37,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:37,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952260719] [2025-03-16 17:33:37,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:37,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-16 17:33:37,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-16 17:33:37,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:37,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 17:33:37,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:37,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952260719] [2025-03-16 17:33:37,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952260719] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:33:37,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724201193] [2025-03-16 17:33:37,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:37,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:37,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:37,826 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) [2025-03-16 17:33:37,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 17:33:37,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-16 17:33:37,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-16 17:33:37,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:37,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:37,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 17:33:37,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:33:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:37,938 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 17:33:37,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724201193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:33:37,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 17:33:37,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2025-03-16 17:33:37,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627058593] [2025-03-16 17:33:37,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:33:37,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 17:33:37,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:37,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 17:33:37,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 17:33:37,958 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 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 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2025-03-16 17:33:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:38,000 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2025-03-16 17:33:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 17:33:38,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2025-03-16 17:33:38,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:38,005 INFO L225 Difference]: With dead ends: 49 [2025-03-16 17:33:38,005 INFO L226 Difference]: Without dead ends: 26 [2025-03-16 17:33:38,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 17:33:38,011 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 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 [2025-03-16 17:33:38,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:33:38,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-03-16 17:33:38,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-03-16 17:33:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-16 17:33:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2025-03-16 17:33:38,040 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2025-03-16 17:33:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:38,041 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2025-03-16 17:33:38,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2025-03-16 17:33:38,042 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2025-03-16 17:33:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-16 17:33:38,043 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:38,043 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:38,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 17:33:38,247 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 [2025-03-16 17:33:38,247 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:38,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:38,248 INFO L85 PathProgramCache]: Analyzing trace with hash -128973464, now seen corresponding path program 1 times [2025-03-16 17:33:38,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:38,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479444604] [2025-03-16 17:33:38,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:38,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:38,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-16 17:33:38,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-16 17:33:38,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:38,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 17:33:38,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479444604] [2025-03-16 17:33:38,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479444604] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:33:38,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550800401] [2025-03-16 17:33:38,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:38,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:38,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:38,462 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) [2025-03-16 17:33:38,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 17:33:38,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-16 17:33:38,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-16 17:33:38,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:38,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:38,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-16 17:33:38,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:33:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:38,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 17:33:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550800401] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:33:38,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 17:33:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-03-16 17:33:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663056436] [2025-03-16 17:33:38,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:33:38,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 17:33:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:38,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 17:33:38,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-16 17:33:38,686 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-03-16 17:33:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:38,760 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2025-03-16 17:33:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 17:33:38,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 18 [2025-03-16 17:33:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:38,761 INFO L225 Difference]: With dead ends: 61 [2025-03-16 17:33:38,761 INFO L226 Difference]: Without dead ends: 28 [2025-03-16 17:33:38,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 17:33:38,762 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:38,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 68 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:33:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-16 17:33:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2025-03-16 17:33:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2025-03-16 17:33:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2025-03-16 17:33:38,765 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2025-03-16 17:33:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:38,765 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2025-03-16 17:33:38,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-03-16 17:33:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2025-03-16 17:33:38,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-16 17:33:38,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:38,766 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:38,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 17:33:38,970 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 [2025-03-16 17:33:38,970 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:38,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:38,970 INFO L85 PathProgramCache]: Analyzing trace with hash 959918327, now seen corresponding path program 1 times [2025-03-16 17:33:38,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:38,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449925188] [2025-03-16 17:33:38,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:38,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:38,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-16 17:33:39,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-16 17:33:39,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:39,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 17:33:39,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:39,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449925188] [2025-03-16 17:33:39,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449925188] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:33:39,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:33:39,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-16 17:33:39,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214369153] [2025-03-16 17:33:39,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:33:39,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 17:33:39,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:39,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 17:33:39,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 17:33:39,341 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 17:33:39,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:39,474 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2025-03-16 17:33:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 17:33:39,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 1 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 24 [2025-03-16 17:33:39,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:39,475 INFO L225 Difference]: With dead ends: 36 [2025-03-16 17:33:39,475 INFO L226 Difference]: Without dead ends: 30 [2025-03-16 17:33:39,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-16 17:33:39,476 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:39,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 94 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:33:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-16 17:33:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2025-03-16 17:33:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2025-03-16 17:33:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2025-03-16 17:33:39,483 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2025-03-16 17:33:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:39,483 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2025-03-16 17:33:39,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 17:33:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2025-03-16 17:33:39,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-16 17:33:39,484 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:39,484 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, 1, 1] [2025-03-16 17:33:39,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 17:33:39,484 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:39,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash -309057473, now seen corresponding path program 1 times [2025-03-16 17:33:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:39,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852996910] [2025-03-16 17:33:39,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:39,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:39,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-16 17:33:39,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-16 17:33:39,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:39,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 17:33:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:39,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852996910] [2025-03-16 17:33:39,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852996910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:33:39,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:33:39,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 17:33:39,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681528562] [2025-03-16 17:33:39,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:33:39,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 17:33:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:39,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 17:33:39,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 17:33:39,572 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-16 17:33:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:39,586 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2025-03-16 17:33:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 17:33:39,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2025-03-16 17:33:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:39,587 INFO L225 Difference]: With dead ends: 33 [2025-03-16 17:33:39,587 INFO L226 Difference]: Without dead ends: 27 [2025-03-16 17:33:39,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 17:33:39,588 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:39,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:33:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-16 17:33:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-03-16 17:33:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2025-03-16 17:33:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2025-03-16 17:33:39,595 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2025-03-16 17:33:39,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:39,595 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2025-03-16 17:33:39,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-16 17:33:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2025-03-16 17:33:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-16 17:33:39,596 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:39,596 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:39,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 17:33:39,597 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:39,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash 582596342, now seen corresponding path program 1 times [2025-03-16 17:33:39,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:39,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081304474] [2025-03-16 17:33:39,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:39,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:39,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-16 17:33:39,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-16 17:33:39,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:39,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 17:33:40,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:40,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081304474] [2025-03-16 17:33:40,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081304474] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:33:40,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627425527] [2025-03-16 17:33:40,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:40,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:40,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:40,703 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) [2025-03-16 17:33:40,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 17:33:40,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-16 17:33:40,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-16 17:33:40,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:40,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:40,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-03-16 17:33:40,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:33:40,914 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-16 17:33:40,915 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 [2025-03-16 17:33:40,975 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 [2025-03-16 17:33:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:41,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 66 [2025-03-16 17:33:41,069 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 31 treesize of output 39 [2025-03-16 17:33:41,075 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 29 [2025-03-16 17:33:41,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:33:41,080 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 13 treesize of output 7 [2025-03-16 17:33:41,093 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2025-03-16 17:33:41,093 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 1 case distinctions, treesize of input 17 treesize of output 22 [2025-03-16 17:33:41,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-16 17:33:41,118 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 40 treesize of output 37 [2025-03-16 17:33:41,140 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 40 treesize of output 55 [2025-03-16 17:33:41,156 INFO L349 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2025-03-16 17:33:41,157 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 1 case distinctions, treesize of input 18 treesize of output 30 [2025-03-16 17:33:41,160 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 53 treesize of output 32 [2025-03-16 17:33:41,169 INFO L349 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2025-03-16 17:33:41,169 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 22 [2025-03-16 17:33:41,180 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 [2025-03-16 17:33:41,185 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 [2025-03-16 17:33:41,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:41,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-03-16 17:33:41,193 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 [2025-03-16 17:33:41,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:41,200 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 19 treesize of output 24 [2025-03-16 17:33:41,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:41,214 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 60 treesize of output 75 [2025-03-16 17:33:41,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 56 [2025-03-16 17:33:41,245 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 93 treesize of output 94 [2025-03-16 17:33:41,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2025-03-16 17:33:41,273 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 77 treesize of output 69 [2025-03-16 17:33:41,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 56 [2025-03-16 17:33:41,290 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 [2025-03-16 17:33:41,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 40 treesize of output 11 [2025-03-16 17:33:41,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:41,332 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 62 [2025-03-16 17:33:41,343 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 10 treesize of output 9 [2025-03-16 17:33:41,353 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:33:41,355 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 54 [2025-03-16 17:33:41,371 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 81 treesize of output 76 [2025-03-16 17:33:41,394 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 67 treesize of output 64 [2025-03-16 17:33:41,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:41,407 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 35 treesize of output 18 [2025-03-16 17:33:41,466 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:33:41,469 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 55 treesize of output 47 [2025-03-16 17:33:41,474 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 24 treesize of output 32 [2025-03-16 17:33:41,481 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 21 treesize of output 24 [2025-03-16 17:33:41,487 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 10 treesize of output 9 [2025-03-16 17:33:41,871 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 19 treesize of output 24 [2025-03-16 17:33:42,176 INFO L349 Elim1Store]: treesize reduction 81, result has 1.2 percent of original size [2025-03-16 17:33:42,176 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 192 treesize of output 248 [2025-03-16 17:33:42,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 38 treesize of output 35 [2025-03-16 17:33:42,408 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 31 treesize of output 1 [2025-03-16 17:33:42,428 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 31 treesize of output 1 [2025-03-16 17:33:42,498 INFO L349 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2025-03-16 17:33:42,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 15 [2025-03-16 17:33:42,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:42,527 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 68 treesize of output 39 [2025-03-16 17:33:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:43,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:33:44,497 INFO L349 Elim1Store]: treesize reduction 369, result has 32.9 percent of original size [2025-03-16 17:33:44,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 37 case distinctions, treesize of input 36424 treesize of output 27282 [2025-03-16 17:33:45,026 INFO L349 Elim1Store]: treesize reduction 17, result has 64.6 percent of original size [2025-03-16 17:33:45,028 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 2 case distinctions, treesize of input 580888 treesize of output 503478 [2025-03-16 17:33:45,970 INFO L349 Elim1Store]: treesize reduction 486, result has 31.2 percent of original size [2025-03-16 17:33:45,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 37 case distinctions, treesize of input 13640 treesize of output 10404 [2025-03-16 17:33:46,646 INFO L349 Elim1Store]: treesize reduction 60, result has 81.3 percent of original size [2025-03-16 17:33:46,647 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 13 new quantified variables, introduced 36 case distinctions, treesize of input 12065 treesize of output 11003 [2025-03-16 17:33:46,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:33:46,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 12630 treesize of output 12460 [2025-03-16 17:33:47,170 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 14056 treesize of output 13768 [2025-03-16 17:33:47,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:33:47,690 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 23683 treesize of output 23132 [2025-03-16 17:33:48,783 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 14741 treesize of output 14669