./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init9_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_init9_ground-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2ffc42929e6643779522a313bb51bbe0e05198e9120e04b929ee1d97b6851bc --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:04:42,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:04:42,501 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:04:42,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:04:42,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:04:42,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:04:42,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:04:42,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:04:42,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:04:42,531 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:04:42,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:04:42,532 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:04:42,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:04:42,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:04:42,532 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:04:42,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:04:42,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:04:42,532 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:04:42,533 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:04:42,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:04:42,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:04:42,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:04:42,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:04:42,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:04:42,534 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:04:42,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:04:42,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:04:42,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:04:42,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:04:42,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:04:42,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:04:42,535 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:04:42,535 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 -> a2ffc42929e6643779522a313bb51bbe0e05198e9120e04b929ee1d97b6851bc [2025-03-03 09:04:42,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:04:42,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:04:42,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:04:42,786 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:04:42,787 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:04:42,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init9_ground-1.i [2025-03-03 09:04:43,902 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266b18834/497f9ab369d94b58ac9e5104e8b70e70/FLAG6e40dac32 [2025-03-03 09:04:44,129 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:04:44,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init9_ground-1.i [2025-03-03 09:04:44,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266b18834/497f9ab369d94b58ac9e5104e8b70e70/FLAG6e40dac32 [2025-03-03 09:04:44,467 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266b18834/497f9ab369d94b58ac9e5104e8b70e70 [2025-03-03 09:04:44,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:04:44,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:04:44,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:04:44,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:04:44,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:04:44,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1276a9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44, skipping insertion in model container [2025-03-03 09:04:44,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,484 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:04:44,572 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/array-examples/standard_init9_ground-1.i[816,829] [2025-03-03 09:04:44,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:04:44,594 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:04:44,603 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/array-examples/standard_init9_ground-1.i[816,829] [2025-03-03 09:04:44,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:04:44,619 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:04:44,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44 WrapperNode [2025-03-03 09:04:44,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:04:44,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:04:44,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:04:44,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:04:44,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,640 INFO L138 Inliner]: procedures = 15, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2025-03-03 09:04:44,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:04:44,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:04:44,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:04:44,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:04:44,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,647 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,654 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 9 writes are split as follows [0, 9]. [2025-03-03 09:04:44,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,657 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:04:44,660 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:04:44,660 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:04:44,660 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:04:44,660 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (1/1) ... [2025-03-03 09:04:44,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:04:44,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:04:44,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 09:04:44,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:04:44,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 09:04:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 09:04:44,742 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:04:44,743 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:04:44,843 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-03-03 09:04:44,846 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-03 09:04:44,846 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:04:44,852 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:04:44,852 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:04:44,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:04:44 BoogieIcfgContainer [2025-03-03 09:04:44,852 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:04:44,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:04:44,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:04:44,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:04:44,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:04:44" (1/3) ... [2025-03-03 09:04:44,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdf0e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:04:44, skipping insertion in model container [2025-03-03 09:04:44,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:04:44" (2/3) ... [2025-03-03 09:04:44,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdf0e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:04:44, skipping insertion in model container [2025-03-03 09:04:44,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:04:44" (3/3) ... [2025-03-03 09:04:44,859 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_init9_ground-1.i [2025-03-03 09:04:44,869 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:04:44,870 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_init9_ground-1.i that has 1 procedures, 19 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2025-03-03 09:04:44,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:04:44,912 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;@147dc5f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:04:44,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:04:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-03 09:04:44,918 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:04:44,918 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:04:44,919 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:04:44,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:04:44,922 INFO L85 PathProgramCache]: Analyzing trace with hash 205416118, now seen corresponding path program 1 times [2025-03-03 09:04:44,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:04:44,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902464675] [2025-03-03 09:04:44,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:04:44,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:04:44,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-03 09:04:44,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-03 09:04:44,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:04:44,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:04:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:04:45,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:04:45,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902464675] [2025-03-03 09:04:45,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902464675] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:04:45,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:04:45,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:04:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056328423] [2025-03-03 09:04:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:04:45,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:04:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:04:45,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:04:45,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:04:45,099 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:04:45,174 INFO L93 Difference]: Finished difference Result 44 states and 72 transitions. [2025-03-03 09:04:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:04:45,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-03 09:04:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:04:45,180 INFO L225 Difference]: With dead ends: 44 [2025-03-03 09:04:45,180 INFO L226 Difference]: Without dead ends: 25 [2025-03-03 09:04:45,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:04:45,187 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:04:45,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:04:45,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-03 09:04:45,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-03 09:04:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2025-03-03 09:04:45,210 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 14 [2025-03-03 09:04:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:04:45,210 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2025-03-03 09:04:45,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2025-03-03 09:04:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-03 09:04:45,211 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:04:45,211 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:04:45,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:04:45,211 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:04:45,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:04:45,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1487006319, now seen corresponding path program 1 times [2025-03-03 09:04:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:04:45,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305232600] [2025-03-03 09:04:45,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:04:45,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:04:45,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-03 09:04:45,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-03 09:04:45,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:04:45,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:04:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 09:04:45,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:04:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305232600] [2025-03-03 09:04:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305232600] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:04:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712175716] [2025-03-03 09:04:45,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:04:45,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:04:45,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:04:45,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:04:45,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 09:04:45,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-03 09:04:45,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-03 09:04:45,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:04:45,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:04:45,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:04:45,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:04:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 09:04:45,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:04:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 09:04:45,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712175716] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:04:45,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:04:45,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-03 09:04:45,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787633208] [2025-03-03 09:04:45,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:04:45,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 09:04:45,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:04:45,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 09:04:45,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:04:45,428 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:04:45,549 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2025-03-03 09:04:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 09:04:45,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-03-03 09:04:45,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:04:45,550 INFO L225 Difference]: With dead ends: 73 [2025-03-03 09:04:45,550 INFO L226 Difference]: Without dead ends: 52 [2025-03-03 09:04:45,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:04:45,551 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:04:45,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:04:45,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-03 09:04:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-03-03 09:04:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2025-03-03 09:04:45,556 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 23 [2025-03-03 09:04:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:04:45,557 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2025-03-03 09:04:45,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2025-03-03 09:04:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-03 09:04:45,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:04:45,558 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:04:45,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 09:04:45,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:04:45,762 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:04:45,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:04:45,763 INFO L85 PathProgramCache]: Analyzing trace with hash -378938506, now seen corresponding path program 2 times [2025-03-03 09:04:45,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:04:45,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336268733] [2025-03-03 09:04:45,763 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:04:45,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:04:45,787 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-03-03 09:04:45,827 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 09:04:45,827 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:04:45,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:04:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-03-03 09:04:46,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:04:46,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336268733] [2025-03-03 09:04:46,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336268733] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:04:46,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56271387] [2025-03-03 09:04:46,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:04:46,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:04:46,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:04:46,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:04:46,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 09:04:46,053 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-03-03 09:04:46,087 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 09:04:46,087 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:04:46,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:04:46,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 09:04:46,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:04:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-03-03 09:04:46,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:04:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-03-03 09:04:46,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56271387] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:04:46,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:04:46,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-03 09:04:46,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151549896] [2025-03-03 09:04:46,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:04:46,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 09:04:46,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:04:46,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 09:04:46,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-03 09:04:46,172 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:04:46,387 INFO L93 Difference]: Finished difference Result 151 states and 222 transitions. [2025-03-03 09:04:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 09:04:46,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-03 09:04:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:04:46,388 INFO L225 Difference]: With dead ends: 151 [2025-03-03 09:04:46,388 INFO L226 Difference]: Without dead ends: 106 [2025-03-03 09:04:46,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-03 09:04:46,389 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 09:04:46,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 09:04:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-03-03 09:04:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2025-03-03 09:04:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0952380952380953) internal successors, (115), 105 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2025-03-03 09:04:46,397 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 50 [2025-03-03 09:04:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:04:46,397 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2025-03-03 09:04:46,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2025-03-03 09:04:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-03 09:04:46,399 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:04:46,399 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:04:46,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 09:04:46,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-03 09:04:46,600 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:04:46,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:04:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1561545066, now seen corresponding path program 3 times [2025-03-03 09:04:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:04:46,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277189021] [2025-03-03 09:04:46,601 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:04:46,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:04:46,631 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 6 equivalence classes. [2025-03-03 09:04:46,774 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 104 of 104 statements. [2025-03-03 09:04:46,774 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-03 09:04:46,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:04:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2025-03-03 09:04:47,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:04:47,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277189021] [2025-03-03 09:04:47,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277189021] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:04:47,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627171225] [2025-03-03 09:04:47,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:04:47,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:04:47,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:04:47,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:04:47,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 09:04:47,245 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 6 equivalence classes. [2025-03-03 09:04:55,095 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 104 of 104 statements. [2025-03-03 09:04:55,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-03 09:04:55,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:04:55,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-03 09:04:55,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:04:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2025-03-03 09:04:55,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:04:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2025-03-03 09:04:55,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627171225] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:04:55,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:04:55,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-03 09:04:55,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458472357] [2025-03-03 09:04:55,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:04:55,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-03 09:04:55,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:04:55,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-03 09:04:55,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=301, Unknown=0, NotChecked=0, Total=600 [2025-03-03 09:04:55,339 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:04:55,794 INFO L93 Difference]: Finished difference Result 307 states and 432 transitions. [2025-03-03 09:04:55,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 09:04:55,794 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2025-03-03 09:04:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:04:55,796 INFO L225 Difference]: With dead ends: 307 [2025-03-03 09:04:55,796 INFO L226 Difference]: Without dead ends: 214 [2025-03-03 09:04:55,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2025-03-03 09:04:55,797 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:04:55,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:04:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-03-03 09:04:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-03-03 09:04:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.0469483568075117) internal successors, (223), 213 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions. [2025-03-03 09:04:55,820 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 104 [2025-03-03 09:04:55,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:04:55,820 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions. [2025-03-03 09:04:55,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions. [2025-03-03 09:04:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2025-03-03 09:04:55,827 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:04:55,828 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:04:55,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 09:04:56,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:04:56,029 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:04:56,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:04:56,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1493326634, now seen corresponding path program 4 times [2025-03-03 09:04:56,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:04:56,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088883523] [2025-03-03 09:04:56,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:04:56,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:04:56,074 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 212 statements into 2 equivalence classes. [2025-03-03 09:04:56,117 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 212 of 212 statements. [2025-03-03 09:04:56,117 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:04:56,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:04:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2025-03-03 09:04:57,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:04:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088883523] [2025-03-03 09:04:57,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088883523] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:04:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875893601] [2025-03-03 09:04:57,309 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:04:57,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:04:57,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:04:57,311 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) [2025-03-03 09:04:57,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 09:04:57,429 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 212 statements into 2 equivalence classes. [2025-03-03 09:04:57,554 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 212 of 212 statements. [2025-03-03 09:04:57,554 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:04:57,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:04:57,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 09:04:57,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:04:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2025-03-03 09:04:57,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:04:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2025-03-03 09:04:58,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875893601] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:04:58,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:04:58,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-03-03 09:04:58,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887864444] [2025-03-03 09:04:58,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:04:58,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-03 09:04:58,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:04:58,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-03 09:04:58,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 09:04:58,238 INFO L87 Difference]: Start difference. First operand 214 states and 223 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:04:59,177 INFO L93 Difference]: Finished difference Result 619 states and 852 transitions. [2025-03-03 09:04:59,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-03 09:04:59,178 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2025-03-03 09:04:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:04:59,179 INFO L225 Difference]: With dead ends: 619 [2025-03-03 09:04:59,180 INFO L226 Difference]: Without dead ends: 430 [2025-03-03 09:04:59,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 09:04:59,182 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 1473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1473 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-03 09:04:59,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1473 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-03 09:04:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2025-03-03 09:04:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2025-03-03 09:04:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.0233100233100234) internal successors, (439), 429 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 439 transitions. [2025-03-03 09:04:59,214 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 439 transitions. Word has length 212 [2025-03-03 09:04:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:04:59,214 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 439 transitions. [2025-03-03 09:04:59,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:04:59,215 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 439 transitions. [2025-03-03 09:04:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2025-03-03 09:04:59,221 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:04:59,222 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:04:59,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 09:04:59,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:04:59,426 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:04:59,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:04:59,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1467719338, now seen corresponding path program 5 times [2025-03-03 09:04:59,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:04:59,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190740244] [2025-03-03 09:04:59,427 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 09:04:59,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:04:59,512 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 428 statements into 24 equivalence classes. [2025-03-03 09:05:00,329 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 428 of 428 statements. [2025-03-03 09:05:00,330 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-03-03 09:05:00,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:05:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9729 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 8648 trivial. 0 not checked. [2025-03-03 09:05:03,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:05:03,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190740244] [2025-03-03 09:05:03,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190740244] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:05:03,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432881101] [2025-03-03 09:05:03,187 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 09:05:03,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:05:03,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:05:03,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:05:03,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 09:05:03,409 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 428 statements into 24 equivalence classes.