./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-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/hardness-nfm22/hardness_operatoramount_amount100_file-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 d49e82c63c2bb2c50317e322b05c62ce756ce2b0f76f53e25c5542bb842ee0fc --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 23:50:49,740 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 23:50:49,791 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 23:50:49,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 23:50:49,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 23:50:49,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 23:50:49,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 23:50:49,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 23:50:49,823 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 23:50:49,823 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 23:50:49,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 23:50:49,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 23:50:49,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 23:50:49,824 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 23:50:49,824 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 23:50:49,825 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:50:49,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 23:50:49,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 23:50:49,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 23:50:49,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 23:50:49,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 23:50:49,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 23:50:49,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 23:50:49,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 23:50:49,826 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 -> d49e82c63c2bb2c50317e322b05c62ce756ce2b0f76f53e25c5542bb842ee0fc [2025-03-03 23:50:50,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 23:50:50,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 23:50:50,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 23:50:50,075 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 23:50:50,075 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 23:50:50,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-1.i [2025-03-03 23:50:51,222 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac0df2c2/aef51162bbf14a5893c742cccd41a5d0/FLAG7eeddb92f [2025-03-03 23:50:51,445 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 23:50:51,445 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-1.i [2025-03-03 23:50:51,454 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac0df2c2/aef51162bbf14a5893c742cccd41a5d0/FLAG7eeddb92f [2025-03-03 23:50:51,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac0df2c2/aef51162bbf14a5893c742cccd41a5d0 [2025-03-03 23:50:51,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 23:50:51,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 23:50:51,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 23:50:51,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 23:50:51,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 23:50:51,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76816398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51, skipping insertion in model container [2025-03-03 23:50:51,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 23:50:51,608 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/hardness-nfm22/hardness_operatoramount_amount100_file-1.i[915,928] [2025-03-03 23:50:51,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:50:51,712 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 23:50:51,720 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/hardness-nfm22/hardness_operatoramount_amount100_file-1.i[915,928] [2025-03-03 23:50:51,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:50:51,784 INFO L204 MainTranslator]: Completed translation [2025-03-03 23:50:51,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51 WrapperNode [2025-03-03 23:50:51,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 23:50:51,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 23:50:51,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 23:50:51,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 23:50:51,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,853 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 257 [2025-03-03 23:50:51,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 23:50:51,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 23:50:51,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 23:50:51,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 23:50:51,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,886 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 23:50:51,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,894 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 23:50:51,902 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 23:50:51,902 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 23:50:51,902 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 23:50:51,903 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (1/1) ... [2025-03-03 23:50:51,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:50:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:50:51,932 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 23:50:51,934 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 23:50:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 23:50:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 23:50:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 23:50:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 23:50:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 23:50:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 23:50:52,028 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 23:50:52,029 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 23:50:52,436 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L196: havoc property_#t~ite28#1;havoc property_#t~bitwise26#1;havoc property_#t~bitwise27#1; [2025-03-03 23:50:52,473 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2025-03-03 23:50:52,473 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 23:50:52,490 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 23:50:52,491 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 23:50:52,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:50:52 BoogieIcfgContainer [2025-03-03 23:50:52,492 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 23:50:52,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 23:50:52,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 23:50:52,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 23:50:52,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:50:51" (1/3) ... [2025-03-03 23:50:52,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d34eb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:50:52, skipping insertion in model container [2025-03-03 23:50:52,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:50:51" (2/3) ... [2025-03-03 23:50:52,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d34eb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:50:52, skipping insertion in model container [2025-03-03 23:50:52,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:50:52" (3/3) ... [2025-03-03 23:50:52,499 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-1.i [2025-03-03 23:50:52,511 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 23:50:52,514 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount100_file-1.i that has 2 procedures, 115 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 23:50:52,553 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 23:50:52,567 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;@13880dad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 23:50:52,572 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 23:50:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-03 23:50:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2025-03-03 23:50:52,605 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:50:52,606 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:50:52,606 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:50:52,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:50:52,611 INFO L85 PathProgramCache]: Analyzing trace with hash -954355465, now seen corresponding path program 1 times [2025-03-03 23:50:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:50:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257368800] [2025-03-03 23:50:52,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:50:52,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:50:52,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 213 statements into 1 equivalence classes. [2025-03-03 23:50:52,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 213 of 213 statements. [2025-03-03 23:50:52,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:50:52,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:50:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2025-03-03 23:50:52,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:50:52,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257368800] [2025-03-03 23:50:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257368800] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:50:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967947854] [2025-03-03 23:50:52,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:50:52,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:50:52,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:50:52,906 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 23:50:52,908 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 23:50:52,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 213 statements into 1 equivalence classes. [2025-03-03 23:50:53,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 213 of 213 statements. [2025-03-03 23:50:53,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:50:53,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:50:53,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 23:50:53,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:50:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2025-03-03 23:50:53,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:50:53,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967947854] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:50:53,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 23:50:53,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 23:50:53,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221641932] [2025-03-03 23:50:53,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:50:53,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 23:50:53,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:50:53,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 23:50:53,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 23:50:53,126 INFO L87 Difference]: Start difference. First operand has 115 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-03 23:50:53,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:50:53,150 INFO L93 Difference]: Finished difference Result 224 states and 390 transitions. [2025-03-03 23:50:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 23:50:53,152 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 213 [2025-03-03 23:50:53,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:50:53,157 INFO L225 Difference]: With dead ends: 224 [2025-03-03 23:50:53,157 INFO L226 Difference]: Without dead ends: 112 [2025-03-03 23:50:53,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 23:50:53,162 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 23:50:53,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 23:50:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-03 23:50:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2025-03-03 23:50:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 77 states have internal predecessors, (110), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-03 23:50:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 176 transitions. [2025-03-03 23:50:53,197 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 176 transitions. Word has length 213 [2025-03-03 23:50:53,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:50:53,198 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 176 transitions. [2025-03-03 23:50:53,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-03 23:50:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 176 transitions. [2025-03-03 23:50:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2025-03-03 23:50:53,200 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:50:53,201 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:50:53,208 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 23:50:53,401 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 [2025-03-03 23:50:53,402 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:50:53,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:50:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2087427200, now seen corresponding path program 1 times [2025-03-03 23:50:53,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:50:53,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27970525] [2025-03-03 23:50:53,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:50:53,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:50:53,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 213 statements into 1 equivalence classes. [2025-03-03 23:50:53,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 213 of 213 statements. [2025-03-03 23:50:53,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:50:53,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:50:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-03-03 23:50:53,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:50:53,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27970525] [2025-03-03 23:50:53,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27970525] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:50:53,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:50:53,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 23:50:53,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90860165] [2025-03-03 23:50:53,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:50:53,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 23:50:53,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:50:53,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 23:50:53,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 23:50:53,792 INFO L87 Difference]: Start difference. First operand 112 states and 176 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 23:50:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:50:53,872 INFO L93 Difference]: Finished difference Result 330 states and 522 transitions. [2025-03-03 23:50:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 23:50:53,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2025-03-03 23:50:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:50:53,878 INFO L225 Difference]: With dead ends: 330 [2025-03-03 23:50:53,879 INFO L226 Difference]: Without dead ends: 221 [2025-03-03 23:50:53,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 23:50:53,882 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 105 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 23:50:53,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 591 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 23:50:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-03-03 23:50:53,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2025-03-03 23:50:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 150 states have (on average 1.4333333333333333) internal successors, (215), 150 states have internal predecessors, (215), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-03 23:50:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 347 transitions. [2025-03-03 23:50:53,926 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 347 transitions. Word has length 213 [2025-03-03 23:50:53,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:50:53,927 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 347 transitions. [2025-03-03 23:50:53,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-03-03 23:50:53,927 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 347 transitions. [2025-03-03 23:50:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-03-03 23:50:53,929 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:50:53,929 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:50:53,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 23:50:53,929 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:50:53,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:50:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1837085287, now seen corresponding path program 1 times [2025-03-03 23:50:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:50:53,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041675639] [2025-03-03 23:50:53,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:50:53,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:50:53,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-03 23:50:54,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-03 23:50:54,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:50:54,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:51:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 141 proven. 45 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2025-03-03 23:51:07,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:51:07,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041675639] [2025-03-03 23:51:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041675639] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:51:07,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164762872] [2025-03-03 23:51:07,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:51:07,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:51:07,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:51:07,828 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 23:51:07,835 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 23:51:07,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-03 23:51:08,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-03 23:51:08,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:51:08,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:51:08,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-03-03 23:51:08,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:51:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1568 proven. 231 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2025-03-03 23:51:20,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 23:51:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164762872] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:51:25,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 23:51:25,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 34] total 46 [2025-03-03 23:51:25,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927671540] [2025-03-03 23:51:25,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 23:51:25,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-03 23:51:25,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:51:25,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-03 23:51:25,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=2470, Unknown=1, NotChecked=0, Total=2862 [2025-03-03 23:51:25,833 INFO L87 Difference]: Start difference. First operand 219 states and 347 transitions. Second operand has 46 states, 46 states have (on average 3.0434782608695654) internal successors, (140), 43 states have internal predecessors, (140), 12 states have call successors, (66), 10 states have call predecessors, (66), 16 states have return successors, (66), 12 states have call predecessors, (66), 12 states have call successors, (66) [2025-03-03 23:51:30,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []