./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bdb594c873073d652fb54f506ec7ea8f7caa1cb8c040606ba09f2d3f5e908396 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:39:36,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:39:36,312 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:39:36,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:39:36,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:39:36,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:39:36,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:39:36,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:39:36,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:39:36,341 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:39:36,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:39:36,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:39:36,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:39:36,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:39:36,342 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:39:36,342 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:39:36,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:39:36,343 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:39:36,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:39:36,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:39:36,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:39:36,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:39:36,344 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-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdb594c873073d652fb54f506ec7ea8f7caa1cb8c040606ba09f2d3f5e908396 [2025-02-07 20:39:36,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:39:36,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:39:36,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:39:36,593 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:39:36,593 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:39:36,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c [2025-02-07 20:39:37,805 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a98770236/d886ff0d0b944f4db2bccea6d2a01c30/FLAG03dba3e37 [2025-02-07 20:39:38,051 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:39:38,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c [2025-02-07 20:39:38,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a98770236/d886ff0d0b944f4db2bccea6d2a01c30/FLAG03dba3e37 [2025-02-07 20:39:38,363 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a98770236/d886ff0d0b944f4db2bccea6d2a01c30 [2025-02-07 20:39:38,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:39:38,366 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:39:38,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:39:38,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:39:38,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:39:38,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1502bf80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38, skipping insertion in model container [2025-02-07 20:39:38,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:39:38,491 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c[546,559] [2025-02-07 20:39:38,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:39:38,507 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:39:38,514 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c[546,559] [2025-02-07 20:39:38,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:39:38,525 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:39:38,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38 WrapperNode [2025-02-07 20:39:38,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:39:38,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:39:38,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:39:38,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:39:38,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,544 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2025-02-07 20:39:38,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:39:38,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:39:38,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:39:38,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:39:38,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,556 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]. [2025-02-07 20:39:38,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,558 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:39:38,564 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:39:38,564 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:39:38,564 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:39:38,565 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (1/1) ... [2025-02-07 20:39:38,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:39:38,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:39:38,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 20:39:38,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 20:39:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:39:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 20:39:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 20:39:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:39:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:39:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:39:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-07 20:39:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-07 20:39:38,655 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:39:38,656 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:39:38,758 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-07 20:39:38,758 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:39:38,768 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:39:38,768 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:39:38,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:39:38 BoogieIcfgContainer [2025-02-07 20:39:38,769 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:39:38,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:39:38,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:39:38,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:39:38,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:39:38" (1/3) ... [2025-02-07 20:39:38,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c45e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:39:38, skipping insertion in model container [2025-02-07 20:39:38,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:39:38" (2/3) ... [2025-02-07 20:39:38,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c45e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:39:38, skipping insertion in model container [2025-02-07 20:39:38,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:39:38" (3/3) ... [2025-02-07 20:39:38,779 INFO L128 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound10.c [2025-02-07 20:39:38,791 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:39:38,793 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG geo1-ll_unwindbound10.c that has 3 procedures, 23 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 20:39:38,835 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:39:38,845 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;@34581394, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:39:38,846 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:39:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 20:39:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-07 20:39:38,854 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:39:38,854 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:39:38,855 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:39:38,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:39:38,860 INFO L85 PathProgramCache]: Analyzing trace with hash 309395899, now seen corresponding path program 1 times [2025-02-07 20:39:38,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:39:38,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222826191] [2025-02-07 20:39:38,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:39:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:39:38,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 20:39:38,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:39:38,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:39:38,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:39:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:39:38,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:39:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222826191] [2025-02-07 20:39:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222826191] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:39:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426568049] [2025-02-07 20:39:38,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:39:38,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:39:38,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:39:38,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:39:38,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 20:39:39,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 20:39:39,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:39:39,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:39:39,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:39:39,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-07 20:39:39,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:39:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:39:39,046 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:39:39,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426568049] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:39:39,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:39:39,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-07 20:39:39,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933829509] [2025-02-07 20:39:39,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:39:39,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 20:39:39,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:39:39,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 20:39:39,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:39:39,063 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:39:39,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:39:39,072 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2025-02-07 20:39:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 20:39:39,073 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2025-02-07 20:39:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:39:39,076 INFO L225 Difference]: With dead ends: 44 [2025-02-07 20:39:39,076 INFO L226 Difference]: Without dead ends: 20 [2025-02-07 20:39:39,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:39:39,080 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:39:39,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:39:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-07 20:39:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-07 20:39:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 20:39:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-02-07 20:39:39,111 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2025-02-07 20:39:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:39:39,112 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-02-07 20:39:39,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:39:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-02-07 20:39:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-07 20:39:39,116 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:39:39,116 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:39:39,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 20:39:39,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-07 20:39:39,317 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:39:39,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:39:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1620434203, now seen corresponding path program 1 times [2025-02-07 20:39:39,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:39:39,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428960633] [2025-02-07 20:39:39,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:39:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:39:39,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 20:39:39,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:39:39,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:39:39,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:39:39,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347629761] [2025-02-07 20:39:39,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:39:39,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:39:39,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:39:39,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:39:39,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-07 20:39:39,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 20:39:39,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:39:39,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:39:39,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:39:39,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:39:39,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:39:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:39:39,457 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:39:39,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:39:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428960633] [2025-02-07 20:39:39,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:39:39,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347629761] [2025-02-07 20:39:39,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347629761] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:39:39,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:39:39,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:39:39,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161941202] [2025-02-07 20:39:39,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:39:39,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:39:39,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:39:39,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:39:39,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:39:39,459 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:39:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:39:39,494 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2025-02-07 20:39:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:39:39,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2025-02-07 20:39:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:39:39,495 INFO L225 Difference]: With dead ends: 31 [2025-02-07 20:39:39,495 INFO L226 Difference]: Without dead ends: 29 [2025-02-07 20:39:39,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:39:39,496 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:39:39,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:39:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-07 20:39:39,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2025-02-07 20:39:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 20:39:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-02-07 20:39:39,501 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2025-02-07 20:39:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:39:39,502 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-02-07 20:39:39,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:39:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-02-07 20:39:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-07 20:39:39,503 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:39:39,503 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:39:39,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 20:39:39,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:39:39,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:39:39,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:39:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1302391618, now seen corresponding path program 1 times [2025-02-07 20:39:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:39:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407055957] [2025-02-07 20:39:39,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:39:39,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:39:39,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-07 20:39:39,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-07 20:39:39,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:39:39,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:39:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:39:39,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:39:39,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407055957] [2025-02-07 20:39:39,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407055957] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:39:39,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:39:39,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 20:39:39,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685169471] [2025-02-07 20:39:39,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:39:39,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 20:39:39,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:39:39,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 20:39:39,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 20:39:39,800 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:39:39,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:39:39,816 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2025-02-07 20:39:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 20:39:39,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-02-07 20:39:39,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:39:39,819 INFO L225 Difference]: With dead ends: 35 [2025-02-07 20:39:39,819 INFO L226 Difference]: Without dead ends: 27 [2025-02-07 20:39:39,819 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 [2025-02-07 20:39:39,820 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:39:39,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:39:39,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-07 20:39:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-07 20:39:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 20:39:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2025-02-07 20:39:39,824 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2025-02-07 20:39:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:39:39,824 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2025-02-07 20:39:39,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:39:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2025-02-07 20:39:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-07 20:39:39,825 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:39:39,825 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:39:39,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 20:39:39,825 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:39:39,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:39:39,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2079880485, now seen corresponding path program 1 times [2025-02-07 20:39:39,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:39:39,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544508384] [2025-02-07 20:39:39,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:39:39,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:39:39,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-07 20:39:39,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 20:39:39,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:39:39,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:39:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:39:40,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:39:40,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544508384] [2025-02-07 20:39:40,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544508384] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:39:40,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915250279] [2025-02-07 20:39:40,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:39:40,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:39:40,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:39:40,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:39:40,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-07 20:39:40,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-07 20:39:40,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 20:39:40,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:39:40,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:39:40,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-07 20:39:40,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:39:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:39:40,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:39:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:39:40,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915250279] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:39:40,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:39:40,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 12 [2025-02-07 20:39:40,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544840978] [2025-02-07 20:39:40,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:39:40,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 20:39:40,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:39:40,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 20:39:40,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-02-07 20:39:40,438 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 20:39:44,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-02-07 20:39:44,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:39:44,508 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2025-02-07 20:39:44,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 20:39:44,508 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2025-02-07 20:39:44,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:39:44,509 INFO L225 Difference]: With dead ends: 41 [2025-02-07 20:39:44,509 INFO L226 Difference]: Without dead ends: 35 [2025-02-07 20:39:44,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:39:44,510 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:39:44,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 140 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2025-02-07 20:39:44,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-07 20:39:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-02-07 20:39:44,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 20:39:44,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2025-02-07 20:39:44,515 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 25 [2025-02-07 20:39:44,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:39:44,515 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2025-02-07 20:39:44,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 20:39:44,515 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2025-02-07 20:39:44,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-07 20:39:44,516 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:39:44,516 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:39:44,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 20:39:44,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:39:44,720 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:39:44,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:39:44,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1879092259, now seen corresponding path program 1 times [2025-02-07 20:39:44,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:39:44,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151994646] [2025-02-07 20:39:44,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:39:44,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:39:44,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-07 20:39:44,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 20:39:44,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:39:44,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:39:44,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395488169] [2025-02-07 20:39:44,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:39:44,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:39:44,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:39:44,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:39:44,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-07 20:39:44,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-07 20:39:44,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 20:39:44,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:39:44,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:39:44,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-07 20:39:44,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:39:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:39:45,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:40:01,179 WARN L873 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615) 1) 18446744073709551616) 0))) is different from true [2025-02-07 20:40:29,374 WARN L873 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0))) is different from true [2025-02-07 20:40:57,473 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-07 20:40:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 10 not checked. [2025-02-07 20:40:57,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:40:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151994646] [2025-02-07 20:40:57,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:40:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395488169] [2025-02-07 20:40:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395488169] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:40:57,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:40:57,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2025-02-07 20:40:57,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44969056] [2025-02-07 20:40:57,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 20:40:57,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-07 20:40:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:40:57,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-07 20:40:57,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=198, Unknown=3, NotChecked=58, Total=306 [2025-02-07 20:40:57,496 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 15 states have internal predecessors, (38), 8 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-07 20:41:05,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-02-07 20:41:17,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-02-07 20:41:21,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-02-07 20:41:25,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []