./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/nla-digbench-scaling/ps4-ll_valuebound10.c -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 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:18:49,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:18:49,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:18:49,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:18:49,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:18:49,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:18:49,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:18:49,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:18:49,779 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:18:49,779 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:18:49,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:18:49,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:18:49,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:18:49,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:18:49,780 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:18:49,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:18:49,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:18:49,780 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:18:49,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:18:49,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:18:49,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:18:49,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:18:49,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:18:49,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:18:49,782 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:18:49,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:18:49,782 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:18:49,782 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:18:49,782 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:18:49,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:18:49,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:18:49,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:18:49,783 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 -> 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f [2025-03-08 05:18:50,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:18:50,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:18:50,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:18:50,029 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:18:50,029 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:18:50,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2025-03-08 05:18:51,233 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a47da9d/64fb25d744004344bdb67bf11265cc60/FLAGdde4654e6 [2025-03-08 05:18:51,434 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:18:51,435 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2025-03-08 05:18:51,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a47da9d/64fb25d744004344bdb67bf11265cc60/FLAGdde4654e6 [2025-03-08 05:18:51,457 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a47da9d/64fb25d744004344bdb67bf11265cc60 [2025-03-08 05:18:51,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:18:51,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:18:51,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:18:51,462 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:18:51,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:18:51,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3993ea07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51, skipping insertion in model container [2025-03-08 05:18:51,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,478 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:18:51,576 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/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2025-03-08 05:18:51,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:18:51,594 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:18:51,602 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/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2025-03-08 05:18:51,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:18:51,615 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:18:51,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51 WrapperNode [2025-03-08 05:18:51,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:18:51,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:18:51,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:18:51,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:18:51,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,636 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2025-03-08 05:18:51,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:18:51,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:18:51,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:18:51,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:18:51,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,647 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,653 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 05:18:51,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,655 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,656 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:18:51,657 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:18:51,657 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:18:51,657 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:18:51,658 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (1/1) ... [2025-03-08 05:18:51,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:18:51,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:18:51,683 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) [2025-03-08 05:18:51,686 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 [2025-03-08 05:18:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:18:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:18:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:18:51,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:18:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 05:18:51,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 05:18:51,738 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:18:51,739 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:18:51,829 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-08 05:18:51,829 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:18:51,837 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:18:51,837 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:18:51,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:18:51 BoogieIcfgContainer [2025-03-08 05:18:51,837 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:18:51,840 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:18:51,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:18:51,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:18:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:18:51" (1/3) ... [2025-03-08 05:18:51,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568b694f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:18:51, skipping insertion in model container [2025-03-08 05:18:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:51" (2/3) ... [2025-03-08 05:18:51,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568b694f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:18:51, skipping insertion in model container [2025-03-08 05:18:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:18:51" (3/3) ... [2025-03-08 05:18:51,845 INFO L128 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound10.c [2025-03-08 05:18:51,854 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:18:51,855 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ps4-ll_valuebound10.c that has 2 procedures, 18 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 05:18:51,892 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:18:51,902 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;@7c3b72f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:18:51,902 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:18:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-08 05:18:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 05:18:51,909 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:18:51,910 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:18:51,910 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:18:51,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:18:51,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1540419880, now seen corresponding path program 1 times [2025-03-08 05:18:51,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:18:51,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162306907] [2025-03-08 05:18:51,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:18:51,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:18:51,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 05:18:51,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 05:18:51,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:18:51,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:18:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:18:52,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:18:52,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162306907] [2025-03-08 05:18:52,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162306907] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:18:52,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:18:52,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 05:18:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523429576] [2025-03-08 05:18:52,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:18:52,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 05:18:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:18:52,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 05:18:52,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 05:18:52,035 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 05:18:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:18:52,044 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2025-03-08 05:18:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 05:18:52,049 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-08 05:18:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:18:52,052 INFO L225 Difference]: With dead ends: 33 [2025-03-08 05:18:52,052 INFO L226 Difference]: Without dead ends: 14 [2025-03-08 05:18:52,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 05:18:52,060 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:18:52,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:18:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-08 05:18:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-08 05:18:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 05:18:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-08 05:18:52,082 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2025-03-08 05:18:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:18:52,083 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-08 05:18:52,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 05:18:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-08 05:18:52,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 05:18:52,083 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:18:52,083 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:18:52,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 05:18:52,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:18:52,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:18:52,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1511790729, now seen corresponding path program 1 times [2025-03-08 05:18:52,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:18:52,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111637027] [2025-03-08 05:18:52,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:18:52,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:18:52,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 05:18:52,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 05:18:52,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:18:52,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:18:52,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673910015] [2025-03-08 05:18:52,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:18:52,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:18:52,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:18:52,106 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) [2025-03-08 05:18:52,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 05:18:52,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 05:18:52,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 05:18:52,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:18:52,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:18:52,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:18:52,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:18:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:18:52,230 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:18:52,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:18:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111637027] [2025-03-08 05:18:52,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:18:52,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673910015] [2025-03-08 05:18:52,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673910015] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:18:52,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:18:52,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:18:52,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254298782] [2025-03-08 05:18:52,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:18:52,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:18:52,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:18:52,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:18:52,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:18:52,232 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 05:18:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:18:52,288 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-03-08 05:18:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:18:52,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-08 05:18:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:18:52,289 INFO L225 Difference]: With dead ends: 24 [2025-03-08 05:18:52,289 INFO L226 Difference]: Without dead ends: 20 [2025-03-08 05:18:52,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:18:52,289 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:18:52,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:18:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-03-08 05:18:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-03-08 05:18:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-08 05:18:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-03-08 05:18:52,298 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2025-03-08 05:18:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:18:52,298 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-03-08 05:18:52,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 05:18:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-03-08 05:18:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 05:18:52,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:18:52,299 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:18:52,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 05:18:52,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:18:52,500 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:18:52,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:18:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash 836718783, now seen corresponding path program 1 times [2025-03-08 05:18:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:18:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732660691] [2025-03-08 05:18:52,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:18:52,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:18:52,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 05:18:52,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 05:18:52,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:18:52,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:18:52,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953228286] [2025-03-08 05:18:52,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:18:52,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:18:52,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:18:52,528 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) [2025-03-08 05:18:52,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 05:18:52,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 05:18:52,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 05:18:52,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:18:52,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:18:52,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 05:18:52,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:18:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:18:52,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:18:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 05:18:52,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:18:52,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732660691] [2025-03-08 05:18:52,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:18:52,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953228286] [2025-03-08 05:18:52,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953228286] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 05:18:52,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:18:52,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2025-03-08 05:18:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793391982] [2025-03-08 05:18:52,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:18:52,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:18:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:18:52,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:18:52,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:18:52,696 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 05:18:52,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:18:52,722 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2025-03-08 05:18:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:18:52,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2025-03-08 05:18:52,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:18:52,723 INFO L225 Difference]: With dead ends: 26 [2025-03-08 05:18:52,723 INFO L226 Difference]: Without dead ends: 21 [2025-03-08 05:18:52,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:18:52,723 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:18:52,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 41 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:18:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-08 05:18:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-03-08 05:18:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 05:18:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2025-03-08 05:18:52,729 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2025-03-08 05:18:52,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:18:52,729 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2025-03-08 05:18:52,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 05:18:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2025-03-08 05:18:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-08 05:18:52,731 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:18:52,731 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:18:52,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 05:18:52,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-08 05:18:52,935 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:18:52,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:18:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash -460616633, now seen corresponding path program 1 times [2025-03-08 05:18:52,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:18:52,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330444877] [2025-03-08 05:18:52,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:18:52,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:18:52,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 05:18:52,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 05:18:52,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:18:52,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:18:52,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554788984] [2025-03-08 05:18:52,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:18:52,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:18:52,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:18:52,956 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) [2025-03-08 05:18:52,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 05:18:52,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 05:18:53,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 05:18:53,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:18:53,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:18:53,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 05:18:53,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:18:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 05:18:53,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:18:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 05:18:53,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:18:53,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330444877] [2025-03-08 05:18:53,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:18:53,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554788984] [2025-03-08 05:18:53,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554788984] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:18:53,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 05:18:53,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2025-03-08 05:18:53,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890524274] [2025-03-08 05:18:53,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 05:18:53,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 05:18:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:18:53,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 05:18:53,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:18:53,147 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-08 05:18:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:18:53,221 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2025-03-08 05:18:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:18:53,221 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2025-03-08 05:18:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:18:53,222 INFO L225 Difference]: With dead ends: 33 [2025-03-08 05:18:53,222 INFO L226 Difference]: Without dead ends: 27 [2025-03-08 05:18:53,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:18:53,224 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:18:53,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 86 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:18:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-08 05:18:53,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-03-08 05:18:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 05:18:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2025-03-08 05:18:53,232 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 20 [2025-03-08 05:18:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:18:53,233 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2025-03-08 05:18:53,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-08 05:18:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2025-03-08 05:18:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 05:18:53,234 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:18:53,234 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:18:53,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 05:18:53,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:18:53,438 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:18:53,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:18:53,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2014313953, now seen corresponding path program 2 times [2025-03-08 05:18:53,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:18:53,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344415946] [2025-03-08 05:18:53,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:18:53,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:18:53,448 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-08 05:18:53,480 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 05:18:53,480 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:18:53,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:18:53,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189778469] [2025-03-08 05:18:53,481 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:18:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:18:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:18:53,487 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) [2025-03-08 05:18:53,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 05:18:53,519 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-08 05:18:53,536 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 05:18:53,536 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:18:53,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:18:53,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-08 05:18:53,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:18:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-08 05:18:53,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:18:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-08 05:18:53,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:18:53,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344415946] [2025-03-08 05:18:53,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:18:53,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189778469] [2025-03-08 05:18:53,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189778469] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:18:53,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 05:18:53,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2025-03-08 05:18:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823133356] [2025-03-08 05:18:53,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 05:18:53,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-08 05:18:53,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:18:53,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-08 05:18:53,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-03-08 05:18:53,961 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-08 05:18:54,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:18:54,165 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2025-03-08 05:18:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 05:18:54,166 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 38 [2025-03-08 05:18:54,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:18:54,166 INFO L225 Difference]: With dead ends: 30 [2025-03-08 05:18:54,166 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 05:18:54,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2025-03-08 05:18:54,167 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:18:54,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 110 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:18:54,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 05:18:54,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 05:18:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 05:18:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 05:18:54,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2025-03-08 05:18:54,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:18:54,171 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 05:18:54,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-08 05:18:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 05:18:54,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 05:18:54,173 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 05:18:54,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 05:18:54,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:18:54,376 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2025-03-08 05:18:54,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 05:18:54,481 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 05:18:54,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:18:54 BoogieIcfgContainer [2025-03-08 05:18:54,497 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 05:18:54,498 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 05:18:54,498 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 05:18:54,498 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 05:18:54,499 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:18:51" (3/4) ... [2025-03-08 05:18:54,500 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 05:18:54,503 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-03-08 05:18:54,505 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-03-08 05:18:54,505 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 05:18:54,506 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 05:18:54,506 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 05:18:54,556 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 05:18:54,557 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 05:18:54,557 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 05:18:54,558 INFO L158 Benchmark]: Toolchain (without parser) took 3096.40ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 65.1MB in the end (delta: 47.5MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2025-03-08 05:18:54,558 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 05:18:54,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.26ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 101.5MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 05:18:54,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.50ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.6MB in the end (delta: 939.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 05:18:54,559 INFO L158 Benchmark]: Boogie Preprocessor took 18.47ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 99.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 05:18:54,559 INFO L158 Benchmark]: IcfgBuilder took 180.35ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 88.1MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 05:18:54,559 INFO L158 Benchmark]: TraceAbstraction took 2657.25ms. Allocated memory is still 142.6MB. Free memory was 87.6MB in the beginning and 70.3MB in the end (delta: 17.3MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2025-03-08 05:18:54,559 INFO L158 Benchmark]: Witness Printer took 58.98ms. Allocated memory is still 142.6MB. Free memory was 70.3MB in the beginning and 65.1MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 05:18:54,561 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.26ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 101.5MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.50ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.6MB in the end (delta: 939.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.47ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 99.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 180.35ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 88.1MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2657.25ms. Allocated memory is still 142.6MB. Free memory was 87.6MB in the beginning and 70.3MB in the end (delta: 17.3MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Witness Printer took 58.98ms. Allocated memory is still 142.6MB. Free memory was 70.3MB in the beginning and 65.1MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 26 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 298 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 230 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 247 IncrementalHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 68 mSDtfsCounter, 247 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 589 SizeOfPredicates, 7 NumberOfNonLiveVariables, 288 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 95/166 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Location Invariant Derived location invariant: (((((y + ((__int128) y * y)) == (c + ((__int128) c * y))) && ((((__int128) 2 * c) + ((__int128) c * y)) == (((__int128) 2 * y) + ((__int128) y * y)))) && ((((__int128) k * y) == ((__int128) y * y)) || (c < k))) && (((((((__int128) y * y) * y) * 2) + ((((__int128) y * y) * y) * y)) + ((__int128) y * y)) == ((__int128) x * 4))) RESULT: Ultimate proved your program to be correct! [2025-03-08 05:18:54,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE