./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/geo2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/geo2-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a98a4f6d4468ae083fd187468f200dfe4bbfca67ec0169dca0f5ba03f377742 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 04:51:56,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 04:51:56,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 04:51:56,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 04:51:56,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 04:51:56,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 04:51:56,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 04:51:56,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 04:51:56,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 04:51:56,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 04:51:56,463 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 04:51:56,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 04:51:56,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 04:51:56,464 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:51:56,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 04:51:56,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 04:51:56,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 04:51:56,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 04:51:56,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 04:51:56,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 04:51:56,467 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a98a4f6d4468ae083fd187468f200dfe4bbfca67ec0169dca0f5ba03f377742 [2025-03-08 04:51:56,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 04:51:56,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 04:51:56,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 04:51:56,782 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 04:51:56,782 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 04:51:56,784 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/geo2-ll.c [2025-03-08 04:51:57,973 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29735d8a6/a76a61177ac24654b2285234e9280e9d/FLAG09f6985d6 [2025-03-08 04:51:58,205 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 04:51:58,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo2-ll.c [2025-03-08 04:51:58,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29735d8a6/a76a61177ac24654b2285234e9280e9d/FLAG09f6985d6 [2025-03-08 04:51:58,523 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29735d8a6/a76a61177ac24654b2285234e9280e9d [2025-03-08 04:51:58,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 04:51:58,526 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 04:51:58,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 04:51:58,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 04:51:58,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 04:51:58,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14857781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58, skipping insertion in model container [2025-03-08 04:51:58,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,540 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 04:51:58,630 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo2-ll.c[525,538] [2025-03-08 04:51:58,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:51:58,648 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 04:51:58,655 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo2-ll.c[525,538] [2025-03-08 04:51:58,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:51:58,668 INFO L204 MainTranslator]: Completed translation [2025-03-08 04:51:58,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58 WrapperNode [2025-03-08 04:51:58,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 04:51:58,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 04:51:58,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 04:51:58,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 04:51:58,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,690 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2025-03-08 04:51:58,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 04:51:58,691 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 04:51:58,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 04:51:58,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 04:51:58,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,707 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 04:51:58,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,710 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 04:51:58,715 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 04:51:58,715 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 04:51:58,715 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 04:51:58,716 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (1/1) ... [2025-03-08 04:51:58,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:51:58,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:51:58,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 04:51:58,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 04:51:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 04:51:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 04:51:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 04:51:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 04:51:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 04:51:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 04:51:58,802 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 04:51:58,803 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 04:51:58,913 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-03-08 04:51:58,913 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 04:51:58,922 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 04:51:58,922 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 04:51:58,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:51:58 BoogieIcfgContainer [2025-03-08 04:51:58,923 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 04:51:58,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 04:51:58,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 04:51:58,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 04:51:58,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:51:58" (1/3) ... [2025-03-08 04:51:58,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6915f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:51:58, skipping insertion in model container [2025-03-08 04:51:58,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:51:58" (2/3) ... [2025-03-08 04:51:58,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6915f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:51:58, skipping insertion in model container [2025-03-08 04:51:58,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:51:58" (3/3) ... [2025-03-08 04:51:58,930 INFO L128 eAbstractionObserver]: Analyzing ICFG geo2-ll.c [2025-03-08 04:51:58,941 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 04:51:58,943 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG geo2-ll.c that has 2 procedures, 15 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 04:51:58,988 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 04:51:58,997 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;@4d91fc9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 04:51:58,998 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 04:51:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 04:51:59,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-08 04:51:59,008 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:51:59,009 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 04:51:59,009 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:51:59,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:51:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1212301979, now seen corresponding path program 1 times [2025-03-08 04:51:59,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:51:59,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399511133] [2025-03-08 04:51:59,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:51:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:51:59,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 04:51:59,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 04:51:59,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:51:59,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 04:51:59,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550388403] [2025-03-08 04:51:59,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:51:59,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:51:59,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:51:59,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:51:59,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 04:51:59,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 04:51:59,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 04:51:59,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:51:59,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:51:59,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 04:51:59,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:51:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:51:59,257 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 04:51:59,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:51:59,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399511133] [2025-03-08 04:51:59,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 04:51:59,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550388403] [2025-03-08 04:51:59,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550388403] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:51:59,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 04:51:59,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 04:51:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605979752] [2025-03-08 04:51:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:51:59,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 04:51:59,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:51:59,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 04:51:59,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 04:51:59,276 INFO L87 Difference]: Start difference. First operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:51:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:51:59,325 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2025-03-08 04:51:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 04:51:59,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-08 04:51:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:51:59,330 INFO L225 Difference]: With dead ends: 37 [2025-03-08 04:51:59,331 INFO L226 Difference]: Without dead ends: 17 [2025-03-08 04:51:59,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 04:51:59,334 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:51:59,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:51:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-03-08 04:51:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-03-08 04:51:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 04:51:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2025-03-08 04:51:59,358 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 6 [2025-03-08 04:51:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:51:59,359 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2025-03-08 04:51:59,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:51:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2025-03-08 04:51:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 04:51:59,359 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:51:59,359 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:51:59,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 04:51:59,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 04:51:59,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:51:59,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:51:59,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1390398442, now seen corresponding path program 1 times [2025-03-08 04:51:59,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:51:59,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67192046] [2025-03-08 04:51:59,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:51:59,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:51:59,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 04:51:59,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 04:51:59,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:51:59,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 04:51:59,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879238654] [2025-03-08 04:51:59,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:51:59,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:51:59,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:51:59,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:51:59,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 04:51:59,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 04:51:59,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 04:51:59,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:51:59,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:51:59,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 04:51:59,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:51:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:51:59,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:52:03,796 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~z~0#1| (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0)) is different from false [2025-03-08 04:52:03,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:52:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67192046] [2025-03-08 04:52:03,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 04:52:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879238654] [2025-03-08 04:52:03,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879238654] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:52:03,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 04:52:03,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2025-03-08 04:52:03,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831434164] [2025-03-08 04:52:03,823 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 04:52:03,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 04:52:03,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:52:03,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 04:52:03,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2025-03-08 04:52:03,825 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 04:52:03,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:52:03,871 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2025-03-08 04:52:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 04:52:03,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-03-08 04:52:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:52:03,872 INFO L225 Difference]: With dead ends: 26 [2025-03-08 04:52:03,872 INFO L226 Difference]: Without dead ends: 23 [2025-03-08 04:52:03,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2025-03-08 04:52:03,873 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:52:03,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 40 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:52:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-08 04:52:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-03-08 04:52:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-08 04:52:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2025-03-08 04:52:03,877 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2025-03-08 04:52:03,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:52:03,878 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2025-03-08 04:52:03,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 04:52:03,878 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2025-03-08 04:52:03,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 04:52:03,878 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:52:03,878 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2025-03-08 04:52:03,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 04:52:04,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 04:52:04,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:52:04,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:52:04,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1132536327, now seen corresponding path program 2 times [2025-03-08 04:52:04,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:52:04,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026988389] [2025-03-08 04:52:04,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:52:04,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:52:04,085 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 04:52:04,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 04:52:04,110 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:52:04,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 04:52:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320979679] [2025-03-08 04:52:04,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:52:04,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:52:04,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:52:04,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:52:04,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 04:52:04,142 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 04:52:04,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 04:52:04,210 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:52:04,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:52:04,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-08 04:52:04,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:52:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:52:04,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:52:21,125 WARN L873 $PredicateComparison]: unable to prove that (or (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 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|) 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 |c_ULTIMATE.start_main_~z~0#1|) 1) 18446744073709551616) 0))) is different from true [2025-03-08 04:52:33,483 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~z~0#1| (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0)))) is different from false [2025-03-08 04:52:37,487 WARN L873 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~z~0#1| (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0)))) is different from true [2025-03-08 04:52:47,451 WARN L286 SmtUtils]: Spent 5.38s 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) [2025-03-08 04:52:47,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:52:47,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026988389] [2025-03-08 04:52:47,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 04:52:47,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320979679] [2025-03-08 04:52:47,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320979679] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:52:47,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 04:52:47,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-03-08 04:52:47,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244929769] [2025-03-08 04:52:47,452 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 04:52:47,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 04:52:47,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:52:47,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 04:52:47,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=122, Unknown=4, NotChecked=46, Total=210 [2025-03-08 04:52:47,453 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 04:52:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:52:47,553 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2025-03-08 04:52:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 04:52:47,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2025-03-08 04:52:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:52:47,554 INFO L225 Difference]: With dead ends: 32 [2025-03-08 04:52:47,554 INFO L226 Difference]: Without dead ends: 29 [2025-03-08 04:52:47,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=46, Invalid=140, Unknown=4, NotChecked=50, Total=240 [2025-03-08 04:52:47,555 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:52:47,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 56 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:52:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-08 04:52:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-03-08 04:52:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-08 04:52:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2025-03-08 04:52:47,564 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 18 [2025-03-08 04:52:47,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:52:47,564 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2025-03-08 04:52:47,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 04:52:47,564 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2025-03-08 04:52:47,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-08 04:52:47,565 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:52:47,565 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2025-03-08 04:52:47,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 04:52:47,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:52:47,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:52:47,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:52:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2089150664, now seen corresponding path program 3 times [2025-03-08 04:52:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:52:47,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931154000] [2025-03-08 04:52:47,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:52:47,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:52:47,771 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 4 equivalence classes. [2025-03-08 04:52:47,805 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 04:52:47,805 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-08 04:52:47,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 04:52:47,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849195577] [2025-03-08 04:52:47,806 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:52:47,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:52:47,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:52:47,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:52:47,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 04:52:47,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 4 equivalence classes.