./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 81099e1fe8016daaefd672ebf53a7cbfe30573425760bd713b63c430b338ca02 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 18:27:40,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 18:27:40,053 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-03 18:27:40,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 18:27:40,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 18:27:40,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 18:27:40,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 18:27:40,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 18:27:40,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 18:27:40,080 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 18:27:40,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 18:27:40,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 18:27:40,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 18:27:40,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 18:27:40,081 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 18:27:40,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 18:27:40,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 18:27:40,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 18:27:40,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 18:27:40,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 18:27:40,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 18:27:40,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 18:27:40,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 18:27:40,082 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 18:27:40,082 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 18:27:40,082 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 18:27:40,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 18:27:40,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 18:27:40,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 18:27:40,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:27:40,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 18:27:40,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 18:27:40,083 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 18:27:40,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 18:27:40,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 18:27:40,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 18:27:40,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 18:27:40,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 18:27:40,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 18:27:40,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 18:27:40,084 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81099e1fe8016daaefd672ebf53a7cbfe30573425760bd713b63c430b338ca02 [2025-03-03 18:27:40,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 18:27:40,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 18:27:40,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 18:27:40,322 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 18:27:40,322 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 18:27:40,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2025-03-03 18:27:41,455 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70a87d31d/0987b0a2549842c4831b69823cb3feeb/FLAG381c07800 [2025-03-03 18:27:41,730 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 18:27:41,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2025-03-03 18:27:41,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70a87d31d/0987b0a2549842c4831b69823cb3feeb/FLAG381c07800 [2025-03-03 18:27:42,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70a87d31d/0987b0a2549842c4831b69823cb3feeb [2025-03-03 18:27:42,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 18:27:42,024 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 18:27:42,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 18:27:42,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 18:27:42,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 18:27:42,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22da2d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42, skipping insertion in model container [2025-03-03 18:27:42,029 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,049 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 18:27:42,155 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1266,1279] [2025-03-03 18:27:42,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:27:42,254 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 18:27:42,260 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1266,1279] [2025-03-03 18:27:42,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:27:42,345 INFO L204 MainTranslator]: Completed translation [2025-03-03 18:27:42,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42 WrapperNode [2025-03-03 18:27:42,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 18:27:42,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 18:27:42,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 18:27:42,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 18:27:42,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,426 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 731 [2025-03-03 18:27:42,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 18:27:42,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 18:27:42,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 18:27:42,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 18:27:42,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,453 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,485 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]. [2025-03-03 18:27:42,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,515 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 18:27:42,548 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 18:27:42,548 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 18:27:42,548 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 18:27:42,549 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (1/1) ... [2025-03-03 18:27:42,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:27:42,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:27:42,580 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) [2025-03-03 18:27:42,583 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 [2025-03-03 18:27:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 18:27:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 18:27:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 18:27:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 18:27:42,719 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 18:27:42,721 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 18:27:43,401 INFO L? ?]: Removed 381 outVars from TransFormulas that were not future-live. [2025-03-03 18:27:43,402 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 18:27:43,439 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 18:27:43,441 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 18:27:43,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:27:43 BoogieIcfgContainer [2025-03-03 18:27:43,441 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 18:27:43,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 18:27:43,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 18:27:43,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 18:27:43,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 06:27:42" (1/3) ... [2025-03-03 18:27:43,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28048875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:27:43, skipping insertion in model container [2025-03-03 18:27:43,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:42" (2/3) ... [2025-03-03 18:27:43,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28048875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:27:43, skipping insertion in model container [2025-03-03 18:27:43,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:27:43" (3/3) ... [2025-03-03 18:27:43,449 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2025-03-03 18:27:43,460 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 18:27:43,462 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c that has 1 procedures, 142 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 18:27:43,506 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 18:27:43,516 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;@dad5ce9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 18:27:43,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 18:27:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 140 states have (on average 1.4928571428571429) internal successors, (209), 141 states have internal predecessors, (209), 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) [2025-03-03 18:27:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-03 18:27:43,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:43,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:43,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:43,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:43,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1016460869, now seen corresponding path program 1 times [2025-03-03 18:27:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:27:43,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044913556] [2025-03-03 18:27:43,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:43,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:27:43,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-03 18:27:43,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-03 18:27:43,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:43,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:27:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:27:44,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:27:44,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044913556] [2025-03-03 18:27:44,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044913556] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:27:44,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:27:44,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 18:27:44,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890693672] [2025-03-03 18:27:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:27:44,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 18:27:44,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:27:44,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 18:27:44,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:27:44,167 INFO L87 Difference]: Start difference. First operand has 142 states, 140 states have (on average 1.4928571428571429) internal successors, (209), 141 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:27:44,280 INFO L93 Difference]: Finished difference Result 229 states and 339 transitions. [2025-03-03 18:27:44,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 18:27:44,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2025-03-03 18:27:44,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:27:44,287 INFO L225 Difference]: With dead ends: 229 [2025-03-03 18:27:44,287 INFO L226 Difference]: Without dead ends: 141 [2025-03-03 18:27:44,289 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 [2025-03-03 18:27:44,290 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 18:27:44,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 505 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 18:27:44,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-03-03 18:27:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2025-03-03 18:27:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 140 states have internal predecessors, (207), 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) [2025-03-03 18:27:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2025-03-03 18:27:44,317 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 41 [2025-03-03 18:27:44,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:27:44,317 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2025-03-03 18:27:44,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2025-03-03 18:27:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-03 18:27:44,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:44,318 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:44,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 18:27:44,318 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:44,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:44,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1440836617, now seen corresponding path program 1 times [2025-03-03 18:27:44,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:27:44,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707287149] [2025-03-03 18:27:44,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:44,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:27:44,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-03 18:27:44,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-03 18:27:44,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:44,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:27:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:27:44,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:27:44,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707287149] [2025-03-03 18:27:44,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707287149] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:27:44,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:27:44,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 18:27:44,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508589771] [2025-03-03 18:27:44,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:27:44,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 18:27:44,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:27:44,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 18:27:44,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:27:44,489 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:44,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:27:44,579 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2025-03-03 18:27:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 18:27:44,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-03-03 18:27:44,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:27:44,581 INFO L225 Difference]: With dead ends: 230 [2025-03-03 18:27:44,581 INFO L226 Difference]: Without dead ends: 143 [2025-03-03 18:27:44,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:27:44,581 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 18:27:44,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 18:27:44,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-03-03 18:27:44,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2025-03-03 18:27:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.471830985915493) internal successors, (209), 142 states have internal predecessors, (209), 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) [2025-03-03 18:27:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 209 transitions. [2025-03-03 18:27:44,595 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 209 transitions. Word has length 42 [2025-03-03 18:27:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:27:44,595 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 209 transitions. [2025-03-03 18:27:44,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 209 transitions. [2025-03-03 18:27:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-03 18:27:44,596 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:44,596 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:44,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 18:27:44,596 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:44,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash 215247158, now seen corresponding path program 1 times [2025-03-03 18:27:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:27:44,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546051232] [2025-03-03 18:27:44,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:44,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:27:44,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-03 18:27:44,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-03 18:27:44,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:44,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:27:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:27:45,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:27:45,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546051232] [2025-03-03 18:27:45,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546051232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:27:45,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:27:45,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 18:27:45,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643344984] [2025-03-03 18:27:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:27:45,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 18:27:45,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:27:45,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 18:27:45,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-03 18:27:45,153 INFO L87 Difference]: Start difference. First operand 143 states and 209 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2025-03-03 18:27:45,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:27:45,375 INFO L93 Difference]: Finished difference Result 239 states and 349 transitions. [2025-03-03 18:27:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 18:27:45,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-03-03 18:27:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:27:45,378 INFO L225 Difference]: With dead ends: 239 [2025-03-03 18:27:45,378 INFO L226 Difference]: Without dead ends: 150 [2025-03-03 18:27:45,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-03 18:27:45,379 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 183 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 18:27:45,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 759 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 18:27:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-03-03 18:27:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2025-03-03 18:27:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.4594594594594594) internal successors, (216), 148 states have internal predecessors, (216), 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) [2025-03-03 18:27:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 216 transitions. [2025-03-03 18:27:45,389 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 216 transitions. Word has length 43 [2025-03-03 18:27:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:27:45,389 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 216 transitions. [2025-03-03 18:27:45,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2025-03-03 18:27:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 216 transitions. [2025-03-03 18:27:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-03 18:27:45,390 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:45,390 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:45,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 18:27:45,391 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:45,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:45,392 INFO L85 PathProgramCache]: Analyzing trace with hash -652558886, now seen corresponding path program 1 times [2025-03-03 18:27:45,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:27:45,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409304630] [2025-03-03 18:27:45,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:45,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:27:45,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-03 18:27:45,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-03 18:27:45,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:45,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:27:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:27:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:27:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409304630] [2025-03-03 18:27:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409304630] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:27:45,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:27:45,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 18:27:45,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234189250] [2025-03-03 18:27:45,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:27:45,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 18:27:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:27:45,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 18:27:45,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 18:27:45,869 INFO L87 Difference]: Start difference. First operand 149 states and 216 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:46,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:27:46,009 INFO L93 Difference]: Finished difference Result 252 states and 363 transitions. [2025-03-03 18:27:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 18:27:46,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-03-03 18:27:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:27:46,010 INFO L225 Difference]: With dead ends: 252 [2025-03-03 18:27:46,010 INFO L226 Difference]: Without dead ends: 157 [2025-03-03 18:27:46,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 18:27:46,011 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 189 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 18:27:46,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 661 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 18:27:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-03-03 18:27:46,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2025-03-03 18:27:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4539473684210527) internal successors, (221), 152 states have internal predecessors, (221), 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) [2025-03-03 18:27:46,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 221 transitions. [2025-03-03 18:27:46,020 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 221 transitions. Word has length 44 [2025-03-03 18:27:46,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:27:46,021 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 221 transitions. [2025-03-03 18:27:46,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:46,021 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 221 transitions. [2025-03-03 18:27:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-03 18:27:46,023 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:46,023 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:46,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 18:27:46,023 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:46,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash -28910084, now seen corresponding path program 1 times [2025-03-03 18:27:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:27:46,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867567000] [2025-03-03 18:27:46,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:46,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:27:46,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-03 18:27:46,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-03 18:27:46,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:46,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:27:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:27:46,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:27:46,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867567000] [2025-03-03 18:27:46,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867567000] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:27:46,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:27:46,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 18:27:46,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496524899] [2025-03-03 18:27:46,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:27:46,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 18:27:46,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:27:46,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 18:27:46,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 18:27:46,252 INFO L87 Difference]: Start difference. First operand 153 states and 221 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:27:46,427 INFO L93 Difference]: Finished difference Result 256 states and 368 transitions. [2025-03-03 18:27:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 18:27:46,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-03-03 18:27:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:27:46,429 INFO L225 Difference]: With dead ends: 256 [2025-03-03 18:27:46,429 INFO L226 Difference]: Without dead ends: 157 [2025-03-03 18:27:46,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 18:27:46,430 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 171 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 18:27:46,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 768 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 18:27:46,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-03-03 18:27:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2025-03-03 18:27:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4539473684210527) internal successors, (221), 152 states have internal predecessors, (221), 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) [2025-03-03 18:27:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 221 transitions. [2025-03-03 18:27:46,440 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 221 transitions. Word has length 44 [2025-03-03 18:27:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:27:46,440 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 221 transitions. [2025-03-03 18:27:46,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 221 transitions. [2025-03-03 18:27:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-03 18:27:46,442 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:46,442 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:46,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 18:27:46,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:46,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1456769761, now seen corresponding path program 1 times [2025-03-03 18:27:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:27:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415543221] [2025-03-03 18:27:46,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:27:46,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-03 18:27:46,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-03 18:27:46,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:46,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:27:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:27:46,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:27:46,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415543221] [2025-03-03 18:27:46,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415543221] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:27:46,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:27:46,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 18:27:46,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562836839] [2025-03-03 18:27:46,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:27:46,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 18:27:46,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:27:46,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 18:27:46,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 18:27:46,572 INFO L87 Difference]: Start difference. First operand 153 states and 221 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:27:46,786 INFO L93 Difference]: Finished difference Result 280 states and 397 transitions. [2025-03-03 18:27:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 18:27:46,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-03-03 18:27:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:27:46,788 INFO L225 Difference]: With dead ends: 280 [2025-03-03 18:27:46,788 INFO L226 Difference]: Without dead ends: 181 [2025-03-03 18:27:46,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-03 18:27:46,788 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 229 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 18:27:46,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 538 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 18:27:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-03-03 18:27:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 161. [2025-03-03 18:27:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.44375) internal successors, (231), 160 states have internal predecessors, (231), 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) [2025-03-03 18:27:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 231 transitions. [2025-03-03 18:27:46,796 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 231 transitions. Word has length 44 [2025-03-03 18:27:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:27:46,796 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 231 transitions. [2025-03-03 18:27:46,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 231 transitions. [2025-03-03 18:27:46,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-03 18:27:46,797 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:46,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:46,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 18:27:46,798 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:46,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash -569786742, now seen corresponding path program 1 times [2025-03-03 18:27:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:27:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45934184] [2025-03-03 18:27:46,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:46,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:27:46,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-03 18:27:46,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-03 18:27:46,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:46,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:27:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:27:46,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:27:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45934184] [2025-03-03 18:27:46,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45934184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:27:46,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:27:46,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 18:27:46,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145114190] [2025-03-03 18:27:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:27:46,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 18:27:46,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:27:46,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 18:27:46,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 18:27:46,913 INFO L87 Difference]: Start difference. First operand 161 states and 231 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2025-03-03 18:27:46,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:27:46,998 INFO L93 Difference]: Finished difference Result 282 states and 398 transitions. [2025-03-03 18:27:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 18:27:46,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-03-03 18:27:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:27:46,999 INFO L225 Difference]: With dead ends: 282 [2025-03-03 18:27:46,999 INFO L226 Difference]: Without dead ends: 179 [2025-03-03 18:27:47,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 18:27:47,000 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 79 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 18:27:47,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 601 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 18:27:47,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-03 18:27:47,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 157. [2025-03-03 18:27:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.4423076923076923) internal successors, (225), 156 states have internal predecessors, (225), 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) [2025-03-03 18:27:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 225 transitions. [2025-03-03 18:27:47,004 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 225 transitions. Word has length 45 [2025-03-03 18:27:47,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:27:47,004 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 225 transitions. [2025-03-03 18:27:47,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2025-03-03 18:27:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 225 transitions. [2025-03-03 18:27:47,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-03 18:27:47,005 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:47,005 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:47,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 18:27:47,005 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:47,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash 368501204, now seen corresponding path program 1 times [2025-03-03 18:27:47,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:27:47,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4534942] [2025-03-03 18:27:47,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:47,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:27:47,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-03 18:27:47,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-03 18:27:47,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:47,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 18:27:47,030 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 18:27:47,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-03 18:27:47,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-03 18:27:47,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:47,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 18:27:47,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 18:27:47,082 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 18:27:47,083 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 18:27:47,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 18:27:47,086 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:47,114 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-03 18:27:47,124 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 18:27:47,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 06:27:47 BoogieIcfgContainer [2025-03-03 18:27:47,127 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 18:27:47,127 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 18:27:47,127 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 18:27:47,127 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 18:27:47,128 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:27:43" (3/4) ... [2025-03-03 18:27:47,129 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 18:27:47,130 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 18:27:47,130 INFO L158 Benchmark]: Toolchain (without parser) took 5106.17ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 131.1MB in the beginning and 155.9MB in the end (delta: -24.8MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2025-03-03 18:27:47,131 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 18:27:47,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.04ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 109.9MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-03 18:27:47,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.75ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 96.6MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 18:27:47,131 INFO L158 Benchmark]: Boogie Preprocessor took 119.34ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 88.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 18:27:47,132 INFO L158 Benchmark]: IcfgBuilder took 893.91ms. Allocated memory is still 167.8MB. Free memory was 88.3MB in the beginning and 86.0MB in the end (delta: 2.2MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. [2025-03-03 18:27:47,132 INFO L158 Benchmark]: TraceAbstraction took 3683.58ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 85.2MB in the beginning and 156.0MB in the end (delta: -70.8MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2025-03-03 18:27:47,132 INFO L158 Benchmark]: Witness Printer took 2.78ms. Allocated memory is still 243.3MB. Free memory was 156.0MB in the beginning and 155.9MB in the end (delta: 39.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 18:27:47,133 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.04ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 109.9MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.75ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 96.6MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 119.34ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 88.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 893.91ms. Allocated memory is still 167.8MB. Free memory was 88.3MB in the beginning and 86.0MB in the end (delta: 2.2MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3683.58ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 85.2MB in the beginning and 156.0MB in the end (delta: -70.8MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Witness Printer took 2.78ms. Allocated memory is still 243.3MB. Free memory was 156.0MB in the beginning and 155.9MB in the end (delta: 39.0kB). Peak memory consumption was 8.4MB. 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 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 169. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L32] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L33] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L35] const SORT_33 mask_SORT_33 = (SORT_33)-1 >> (sizeof(SORT_33) * 8 - 4); [L36] const SORT_33 msb_SORT_33 = (SORT_33)1 << (4 - 1); [L38] const SORT_69 mask_SORT_69 = (SORT_69)-1 >> (sizeof(SORT_69) * 8 - 10); [L39] const SORT_69 msb_SORT_69 = (SORT_69)1 << (10 - 1); [L41] const SORT_3 var_7 = 0; [L42] const SORT_10 var_12 = 0; [L43] const SORT_1 var_14 = 0; [L44] const SORT_10 var_18 = 1; [L45] const SORT_1 var_23 = 1; [L46] const SORT_69 var_70 = 0; [L47] const SORT_10 var_113 = 104; [L49] SORT_1 input_2; [L50] SORT_3 input_4; [L51] SORT_1 input_5; [L52] SORT_1 input_6; [L53] SORT_1 input_31; [L54] SORT_33 input_34; [L55] SORT_1 input_36; [L56] SORT_33 input_38; [L57] SORT_1 input_40; [L58] SORT_1 input_42; [L59] SORT_1 input_48; [L60] SORT_1 input_50; [L61] SORT_1 input_52; [L62] SORT_1 input_57; [L63] SORT_1 input_67; [L64] SORT_3 input_75; [L65] SORT_1 input_82; [L66] SORT_1 input_89; [L67] SORT_1 input_95; [L68] SORT_1 input_101; [L69] SORT_1 input_107; [L70] SORT_1 input_108; [L71] SORT_1 input_109; [L72] SORT_1 input_126; [L73] SORT_69 input_136; [L74] SORT_1 input_144; [L75] SORT_1 input_145; [L76] SORT_1 input_146; [L78] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L78] SORT_3 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L79] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L79] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L80] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L81] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L82] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L83] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L84] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L85] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L86] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L87] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L88] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] EXPR __VERIFIER_nondet_ushort() & mask_SORT_69 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L89] SORT_69 state_71 = __VERIFIER_nondet_ushort() & mask_SORT_69; [L90] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0, var_7=0] [L90] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_3 init_9_arg_1 = var_7; [L93] state_8 = init_9_arg_1 [L94] SORT_1 init_16_arg_1 = var_14; [L95] state_15 = init_16_arg_1 [L96] SORT_1 init_28_arg_1 = var_14; [L97] state_27 = init_28_arg_1 [L98] SORT_1 init_30_arg_1 = var_14; [L99] state_29 = init_30_arg_1 [L100] SORT_1 init_45_arg_1 = var_14; [L101] state_44 = init_45_arg_1 [L102] SORT_1 init_47_arg_1 = var_14; [L103] state_46 = init_47_arg_1 [L104] SORT_1 init_55_arg_1 = var_23; [L105] state_54 = init_55_arg_1 [L106] SORT_1 init_60_arg_1 = var_14; [L107] state_59 = init_60_arg_1 [L108] SORT_1 init_62_arg_1 = var_14; [L109] state_61 = init_62_arg_1 [L110] SORT_1 init_64_arg_1 = var_14; [L111] state_63 = init_64_arg_1 [L112] SORT_1 init_66_arg_1 = var_14; [L113] state_65 = init_66_arg_1 [L114] SORT_69 init_72_arg_1 = var_70; [L115] state_71 = init_72_arg_1 [L116] SORT_1 init_74_arg_1 = var_14; [L117] state_73 = init_74_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0] [L120] input_2 = __VERIFIER_nondet_uchar() [L121] input_4 = __VERIFIER_nondet_uchar() [L122] input_5 = __VERIFIER_nondet_uchar() [L123] input_6 = __VERIFIER_nondet_uchar() [L124] input_31 = __VERIFIER_nondet_uchar() [L125] input_34 = __VERIFIER_nondet_uchar() [L126] input_36 = __VERIFIER_nondet_uchar() [L127] input_38 = __VERIFIER_nondet_uchar() [L128] input_40 = __VERIFIER_nondet_uchar() [L129] input_42 = __VERIFIER_nondet_uchar() [L130] input_48 = __VERIFIER_nondet_uchar() [L131] input_50 = __VERIFIER_nondet_uchar() [L132] input_52 = __VERIFIER_nondet_uchar() [L133] input_57 = __VERIFIER_nondet_uchar() [L134] input_67 = __VERIFIER_nondet_uchar() [L135] input_75 = __VERIFIER_nondet_uchar() [L136] input_82 = __VERIFIER_nondet_uchar() [L137] input_89 = __VERIFIER_nondet_uchar() [L138] input_95 = __VERIFIER_nondet_uchar() [L139] input_101 = __VERIFIER_nondet_uchar() [L140] input_107 = __VERIFIER_nondet_uchar() [L141] input_108 = __VERIFIER_nondet_uchar() [L142] input_109 = __VERIFIER_nondet_uchar() [L143] input_126 = __VERIFIER_nondet_uchar() [L144] input_136 = __VERIFIER_nondet_ushort() [L145] input_144 = __VERIFIER_nondet_uchar() [L146] input_145 = __VERIFIER_nondet_uchar() [L147] input_146 = __VERIFIER_nondet_uchar() [L150] SORT_3 var_11_arg_0 = state_8; VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_11_arg_0=0, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0] [L151] EXPR var_11_arg_0 & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0] [L151] var_11_arg_0 = var_11_arg_0 & mask_SORT_3 [L152] SORT_10 var_11 = var_11_arg_0; [L153] SORT_10 var_13_arg_0 = var_11; [L154] SORT_10 var_13_arg_1 = var_12; [L155] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L156] SORT_1 var_17_arg_0 = state_15; VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_13=1, var_14=0, var_17_arg_0=0, var_18=1, var_23=1, var_70=0] [L157] EXPR var_17_arg_0 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_13=1, var_14=0, var_18=1, var_23=1, var_70=0] [L157] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L158] SORT_10 var_17 = var_17_arg_0; [L159] SORT_10 var_19_arg_0 = var_17; [L160] SORT_10 var_19_arg_1 = var_18; [L161] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L162] SORT_1 var_20_arg_0 = var_13; [L163] SORT_1 var_20_arg_1 = var_19; VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_14=0, var_18=1, var_20_arg_0=1, var_20_arg_1=0, var_23=1, var_70=0] [L164] EXPR var_20_arg_0 | var_20_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0] [L164] SORT_1 var_20 = var_20_arg_0 | var_20_arg_1; [L165] SORT_1 var_24_arg_0 = var_20; [L166] SORT_1 var_24 = ~var_24_arg_0; [L167] SORT_1 var_25_arg_0 = var_23; [L168] SORT_1 var_25_arg_1 = var_24; VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_25_arg_0=1, var_25_arg_1=-2, var_70=0] [L169] EXPR var_25_arg_0 & var_25_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0] [L169] SORT_1 var_25 = var_25_arg_0 & var_25_arg_1; [L170] EXPR var_25 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, mask_SORT_69=1023, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_70=0] [L170] var_25 = var_25 & mask_SORT_1 [L171] SORT_1 bad_26_arg_0 = var_25; [L172] CALL __VERIFIER_assert(!(bad_26_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 142 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 851 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 851 mSDsluCounter, 4334 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3187 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1336 IncrementalHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 1147 mSDtfsCounter, 1336 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=6, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 51 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 348 NumberOfCodeBlocks, 348 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 296 ConstructedInterpolants, 0 QuantifiedInterpolants, 993 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-03 18:27:47,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 64bit --witnessprinter.graph.data.programhash 81099e1fe8016daaefd672ebf53a7cbfe30573425760bd713b63c430b338ca02 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 18:27:48,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 18:27:49,044 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-03-03 18:27:49,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 18:27:49,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 18:27:49,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 18:27:49,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 18:27:49,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 18:27:49,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 18:27:49,063 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 18:27:49,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 18:27:49,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 18:27:49,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 18:27:49,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 18:27:49,063 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 18:27:49,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 18:27:49,063 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 18:27:49,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 18:27:49,064 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:27:49,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 18:27:49,064 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 18:27:49,065 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 18:27:49,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 18:27:49,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 18:27:49,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 18:27:49,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 18:27:49,065 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81099e1fe8016daaefd672ebf53a7cbfe30573425760bd713b63c430b338ca02 [2025-03-03 18:27:49,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 18:27:49,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 18:27:49,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 18:27:49,294 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 18:27:49,294 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 18:27:49,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2025-03-03 18:27:50,453 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a7a79c0/eee56ccbedce42e3a31b6440f21619fb/FLAGb400de419 [2025-03-03 18:27:50,633 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 18:27:50,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2025-03-03 18:27:50,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a7a79c0/eee56ccbedce42e3a31b6440f21619fb/FLAGb400de419 [2025-03-03 18:27:50,656 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a7a79c0/eee56ccbedce42e3a31b6440f21619fb [2025-03-03 18:27:50,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 18:27:50,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 18:27:50,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 18:27:50,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 18:27:50,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 18:27:50,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:50,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4051b70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50, skipping insertion in model container [2025-03-03 18:27:50,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:50,692 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 18:27:50,801 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1266,1279] [2025-03-03 18:27:50,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:27:50,908 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 18:27:50,918 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1266,1279] [2025-03-03 18:27:50,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:27:50,975 INFO L204 MainTranslator]: Completed translation [2025-03-03 18:27:50,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50 WrapperNode [2025-03-03 18:27:50,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 18:27:50,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 18:27:50,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 18:27:50,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 18:27:50,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:50,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,014 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 467 [2025-03-03 18:27:51,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 18:27:51,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 18:27:51,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 18:27:51,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 18:27:51,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,036 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]. [2025-03-03 18:27:51,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,044 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 18:27:51,054 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 18:27:51,054 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 18:27:51,054 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 18:27:51,055 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (1/1) ... [2025-03-03 18:27:51,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:27:51,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:27:51,087 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) [2025-03-03 18:27:51,092 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 [2025-03-03 18:27:51,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 18:27:51,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 18:27:51,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 18:27:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 18:27:51,237 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 18:27:51,239 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 18:27:51,577 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2025-03-03 18:27:51,577 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 18:27:51,592 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 18:27:51,592 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 18:27:51,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:27:51 BoogieIcfgContainer [2025-03-03 18:27:51,593 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 18:27:51,595 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 18:27:51,595 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 18:27:51,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 18:27:51,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 06:27:50" (1/3) ... [2025-03-03 18:27:51,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aeb444d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:27:51, skipping insertion in model container [2025-03-03 18:27:51,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:27:50" (2/3) ... [2025-03-03 18:27:51,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aeb444d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:27:51, skipping insertion in model container [2025-03-03 18:27:51,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:27:51" (3/3) ... [2025-03-03 18:27:51,602 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2025-03-03 18:27:51,612 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 18:27:51,613 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 18:27:51,639 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 18:27:51,647 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;@212713b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 18:27:51,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 18:27:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:27:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-03 18:27:51,654 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:51,654 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-03 18:27:51,655 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:51,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash 38140359, now seen corresponding path program 1 times [2025-03-03 18:27:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 18:27:51,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839105144] [2025-03-03 18:27:51,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:51,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 18:27:51,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:27:51,669 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) [2025-03-03 18:27:51,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 18:27:51,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-03 18:27:51,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-03 18:27:51,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:51,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:27:51,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-03 18:27:51,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 18:27:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:27:51,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 18:27:51,984 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 18:27:51,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839105144] [2025-03-03 18:27:51,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839105144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:27:51,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:27:51,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 18:27:51,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66413403] [2025-03-03 18:27:51,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:27:51,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 18:27:51,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 18:27:52,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 18:27:52,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:27:52,006 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-03 18:27:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:27:52,045 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2025-03-03 18:27:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 18:27:52,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-03 18:27:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:27:52,054 INFO L225 Difference]: With dead ends: 18 [2025-03-03 18:27:52,054 INFO L226 Difference]: Without dead ends: 10 [2025-03-03 18:27:52,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 18:27:52,059 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 18:27:52,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 18:27:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-03-03 18:27:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2025-03-03 18:27:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2025-03-03 18:27:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2025-03-03 18:27:52,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2025-03-03 18:27:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:27:52,080 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2025-03-03 18:27:52,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-03 18:27:52,080 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2025-03-03 18:27:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-03 18:27:52,080 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:27:52,080 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-03 18:27:52,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 18:27:52,281 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 [2025-03-03 18:27:52,281 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:27:52,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:27:52,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1926026653, now seen corresponding path program 1 times [2025-03-03 18:27:52,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 18:27:52,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399299450] [2025-03-03 18:27:52,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:27:52,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 18:27:52,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:27:52,285 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) [2025-03-03 18:27:52,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 18:27:52,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-03 18:27:52,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-03 18:27:52,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:27:52,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:27:52,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-03 18:27:52,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 18:27:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:27:52,628 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 18:27:57,330 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse3 (forall ((|v_ULTIMATE.start_main_~var_20_arg_1~0#1_10| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_25_arg_0~0#1_10| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_25_arg_0~0#1_10|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_20_arg_1~0#1_10|)))))))))))) (_ bv0 8)))) (.cse2 (forall ((|v_ULTIMATE.start_main_~var_20_arg_1~0#1_10| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_25_arg_0~0#1_10| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_20_arg_1~0#1_10|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_25_arg_0~0#1_10|))))))))) (.cse6 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_8~0#1|))))) (let ((.cse9 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_46~0#1|)) (.cse11 (or .cse2 (forall ((|ULTIMATE.start_main_~mask_SORT_3~0#1| (_ BitVec 8))) (not (= |c_ULTIMATE.start_main_~var_12~0#1| ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|))))))))) (.cse12 (or .cse3 (forall ((|ULTIMATE.start_main_~mask_SORT_3~0#1| (_ BitVec 8))) (= |c_ULTIMATE.start_main_~var_12~0#1| ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|))))))))) (let ((.cse7 (forall ((|ULTIMATE.start_main_~var_23~0#1| (_ BitVec 8))) (not (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_23~0#1|)))))))))))) (.cse10 (and .cse11 .cse12)) (.cse5 (or (and (or .cse2 (forall ((|ULTIMATE.start_main_~input_4~0#1| (_ BitVec 8)) (|ULTIMATE.start_main_~mask_SORT_3~0#1| (_ BitVec 8))) (not (= |c_ULTIMATE.start_main_~var_12~0#1| ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~input_4~0#1|)))))))))))))) (or .cse3 (forall ((|ULTIMATE.start_main_~input_4~0#1| (_ BitVec 8)) (|ULTIMATE.start_main_~mask_SORT_3~0#1| (_ BitVec 8))) (= |c_ULTIMATE.start_main_~var_12~0#1| ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~input_4~0#1|)))))))))))))) .cse9)) (.cse8 (forall ((|ULTIMATE.start_main_~var_23~0#1| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_23~0#1|)))))))))))) (and (or (forall ((|ULTIMATE.start_main_~state_15~0#1| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~state_15~0#1|)))))))))) (let ((.cse4 (or (not .cse9) .cse10))) (and (or (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) .cse6)))))) (and (or (forall ((|ULTIMATE.start_main_~mask_SORT_3~0#1| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|)))) |c_ULTIMATE.start_main_~var_12~0#1|))) .cse2) (or (forall ((|ULTIMATE.start_main_~mask_SORT_3~0#1| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|)))) |c_ULTIMATE.start_main_~var_12~0#1|)) .cse3) .cse4 .cse5)) .cse7) (or (and .cse4 .cse5) .cse8)))) (or (and (or .cse7 .cse10) (or (and .cse11 .cse12 .cse5) .cse8)) (forall ((|ULTIMATE.start_main_~state_15~0#1| (_ BitVec 8))) (not (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~state_15~0#1|))))))))))))))))) is different from false [2025-03-03 18:27:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2025-03-03 18:27:59,819 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 18:27:59,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399299450] [2025-03-03 18:27:59,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399299450] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 18:27:59,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 18:27:59,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-03 18:27:59,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382166838] [2025-03-03 18:27:59,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 18:27:59,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 18:27:59,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 18:27:59,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 18:27:59,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=49, Unknown=1, NotChecked=14, Total=90 [2025-03-03 18:27:59,822 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:28:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:28:00,187 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2025-03-03 18:28:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 18:28:00,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-03 18:28:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:28:00,189 INFO L225 Difference]: With dead ends: 15 [2025-03-03 18:28:00,189 INFO L226 Difference]: Without dead ends: 13 [2025-03-03 18:28:00,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=42, Invalid=71, Unknown=1, NotChecked=18, Total=132 [2025-03-03 18:28:00,191 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 18:28:00,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 20 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 7 Unchecked, 0.2s Time] [2025-03-03 18:28:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-03-03 18:28:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2025-03-03 18:28:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2025-03-03 18:28:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2025-03-03 18:28:00,195 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2025-03-03 18:28:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:28:00,195 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2025-03-03 18:28:00,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:28:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2025-03-03 18:28:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-03 18:28:00,196 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:28:00,196 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2025-03-03 18:28:00,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 18:28:00,396 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 [2025-03-03 18:28:00,397 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:28:00,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:28:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1791040441, now seen corresponding path program 2 times [2025-03-03 18:28:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 18:28:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9838947] [2025-03-03 18:28:00,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 18:28:00,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 18:28:00,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:28:00,400 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) [2025-03-03 18:28:00,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 18:28:00,512 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-03 18:28:00,539 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 18:28:00,539 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 18:28:00,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:28:00,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-03 18:28:00,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 18:28:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:28:01,392 INFO L312 TraceCheckSpWp]: Computing backward predicates...