./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.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 e794586f9f3740a193d413dfe816851463e703edc20a79bd19788c3a0505333b --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:20:38,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:20:38,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:20:38,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:20:38,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:20:38,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:20:38,993 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:20:38,993 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:20:38,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:20:38,993 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:20:38,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:20:38,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:20:38,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:20:38,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:20:38,996 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:20:38,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:20:38,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:20:38,996 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:20:38,997 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:20:38,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:20:38,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:20:38,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:20:38,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:20:38,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:20:38,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:20:38,998 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:20:38,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:20:38,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:20:38,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:20:38,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:20:38,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:20:38,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:20:38,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:20:38,999 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 -> e794586f9f3740a193d413dfe816851463e703edc20a79bd19788c3a0505333b [2025-03-08 15:20:39,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:20:39,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:20:39,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:20:39,235 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:20:39,236 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:20:39,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i [2025-03-08 15:20:40,419 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a8ed81e/75ae3ccd58e7436eabb8077f93378611/FLAG13181cf64 [2025-03-08 15:20:40,675 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:20:40,676 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i [2025-03-08 15:20:40,685 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a8ed81e/75ae3ccd58e7436eabb8077f93378611/FLAG13181cf64 [2025-03-08 15:20:40,695 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a8ed81e/75ae3ccd58e7436eabb8077f93378611 [2025-03-08 15:20:40,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:20:40,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:20:40,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:20:40,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:20:40,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:20:40,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:20:40" (1/1) ... [2025-03-08 15:20:40,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60592373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:40, skipping insertion in model container [2025-03-08 15:20:40,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:20:40" (1/1) ... [2025-03-08 15:20:40,726 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:20:40,822 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_amount250_file-29.i[916,929] [2025-03-08 15:20:40,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:20:40,929 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:20:40,938 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_amount250_file-29.i[916,929] [2025-03-08 15:20:41,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:20:41,020 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:20:41,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41 WrapperNode [2025-03-08 15:20:41,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:20:41,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:20:41,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:20:41,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:20:41,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,073 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 416 [2025-03-08 15:20:41,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:20:41,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:20:41,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:20:41,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:20:41,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,114 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 15:20:41,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,130 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,131 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:20:41,152 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:20:41,152 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:20:41,152 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:20:41,153 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (1/1) ... [2025-03-08 15:20:41,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:20:41,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:41,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 15:20:41,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 15:20:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:20:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:20:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:20:41,285 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:20:41,287 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:20:41,853 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L373: havoc property_#t~bitwise37#1;havoc property_#t~short38#1;havoc property_#t~bitwise39#1;havoc property_#t~short40#1; [2025-03-08 15:20:41,914 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2025-03-08 15:20:41,914 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:20:41,932 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:20:41,935 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:20:41,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:20:41 BoogieIcfgContainer [2025-03-08 15:20:41,935 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:20:41,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:20:41,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:20:41,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:20:41,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:20:40" (1/3) ... [2025-03-08 15:20:41,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f56090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:20:41, skipping insertion in model container [2025-03-08 15:20:41,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:41" (2/3) ... [2025-03-08 15:20:41,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f56090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:20:41, skipping insertion in model container [2025-03-08 15:20:41,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:20:41" (3/3) ... [2025-03-08 15:20:41,944 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-29.i [2025-03-08 15:20:41,954 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:20:41,956 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-29.i that has 2 procedures, 178 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:20:42,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:20:42,018 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;@2fe92030, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:20:42,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:20:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 120 states have (on average 1.4666666666666666) internal successors, (176), 121 states have internal predecessors, (176), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2025-03-08 15:20:42,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-03-08 15:20:42,041 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:42,042 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:42,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:42,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1276393586, now seen corresponding path program 1 times [2025-03-08 15:20:42,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:42,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202215853] [2025-03-08 15:20:42,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:42,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:42,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:42,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:42,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:42,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2025-03-08 15:20:42,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:42,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202215853] [2025-03-08 15:20:42,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202215853] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:42,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699302608] [2025-03-08 15:20:42,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:42,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:42,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:42,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:20:42,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 15:20:42,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:42,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:42,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:42,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:42,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:20:42,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2025-03-08 15:20:42,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:20:42,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699302608] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:42,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:20:42,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:20:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948865756] [2025-03-08 15:20:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:42,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:20:42,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:42,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:20:42,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:20:42,852 INFO L87 Difference]: Start difference. First operand has 178 states, 120 states have (on average 1.4666666666666666) internal successors, (176), 121 states have internal predecessors, (176), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2025-03-08 15:20:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:42,897 INFO L93 Difference]: Finished difference Result 350 states and 622 transitions. [2025-03-08 15:20:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:20:42,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) Word has length 360 [2025-03-08 15:20:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:42,906 INFO L225 Difference]: With dead ends: 350 [2025-03-08 15:20:42,907 INFO L226 Difference]: Without dead ends: 175 [2025-03-08 15:20:42,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:20:42,913 INFO L435 NwaCegarLoop]: 277 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, 277 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 [2025-03-08 15:20:42,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:20:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-08 15:20:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-03-08 15:20:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.4491525423728813) internal successors, (171), 118 states have internal predecessors, (171), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2025-03-08 15:20:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 281 transitions. [2025-03-08 15:20:42,957 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 281 transitions. Word has length 360 [2025-03-08 15:20:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:42,958 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 281 transitions. [2025-03-08 15:20:42,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2025-03-08 15:20:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 281 transitions. [2025-03-08 15:20:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-03-08 15:20:42,962 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:42,962 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:42,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 15:20:43,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 15:20:43,163 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:43,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash -817418795, now seen corresponding path program 1 times [2025-03-08 15:20:43,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:43,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949298135] [2025-03-08 15:20:43,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:43,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:43,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:43,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:43,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:43,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-03-08 15:20:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:43,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949298135] [2025-03-08 15:20:43,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949298135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:43,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:43,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:20:43,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370768009] [2025-03-08 15:20:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:43,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:20:43,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:43,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:20:43,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:20:43,520 INFO L87 Difference]: Start difference. First operand 175 states and 281 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-03-08 15:20:43,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:43,614 INFO L93 Difference]: Finished difference Result 422 states and 675 transitions. [2025-03-08 15:20:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:20:43,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2025-03-08 15:20:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:43,621 INFO L225 Difference]: With dead ends: 422 [2025-03-08 15:20:43,621 INFO L226 Difference]: Without dead ends: 250 [2025-03-08 15:20:43,622 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 [2025-03-08 15:20:43,623 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 103 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:43,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 615 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:20:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2025-03-08 15:20:43,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2025-03-08 15:20:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 187 states have (on average 1.4973262032085561) internal successors, (280), 188 states have internal predecessors, (280), 57 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-08 15:20:43,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 394 transitions. [2025-03-08 15:20:43,654 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 394 transitions. Word has length 360 [2025-03-08 15:20:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:43,656 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 394 transitions. [2025-03-08 15:20:43,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-03-08 15:20:43,657 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 394 transitions. [2025-03-08 15:20:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-03-08 15:20:43,662 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:43,663 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:43,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:20:43,663 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:43,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:43,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1541888214, now seen corresponding path program 1 times [2025-03-08 15:20:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:43,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360664996] [2025-03-08 15:20:43,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:43,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:43,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:43,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:43,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-03-08 15:20:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360664996] [2025-03-08 15:20:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360664996] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:44,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:20:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446617405] [2025-03-08 15:20:44,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:44,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:20:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:44,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:20:44,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:20:44,223 INFO L87 Difference]: Start difference. First operand 247 states and 394 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-03-08 15:20:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:44,308 INFO L93 Difference]: Finished difference Result 735 states and 1176 transitions. [2025-03-08 15:20:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:20:44,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2025-03-08 15:20:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:44,313 INFO L225 Difference]: With dead ends: 735 [2025-03-08 15:20:44,314 INFO L226 Difference]: Without dead ends: 491 [2025-03-08 15:20:44,315 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 [2025-03-08 15:20:44,315 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 175 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:44,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 800 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:20:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2025-03-08 15:20:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2025-03-08 15:20:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 370 states have (on average 1.4972972972972973) internal successors, (554), 372 states have internal predecessors, (554), 114 states have call successors, (114), 4 states have call predecessors, (114), 4 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2025-03-08 15:20:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 782 transitions. [2025-03-08 15:20:44,368 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 782 transitions. Word has length 360 [2025-03-08 15:20:44,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:44,369 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 782 transitions. [2025-03-08 15:20:44,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-03-08 15:20:44,369 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 782 transitions. [2025-03-08 15:20:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-03-08 15:20:44,397 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:44,397 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:44,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:20:44,398 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:44,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1027598185, now seen corresponding path program 1 times [2025-03-08 15:20:44,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:44,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344380734] [2025-03-08 15:20:44,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:44,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:44,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:44,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:44,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:44,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-03-08 15:20:44,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:44,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344380734] [2025-03-08 15:20:44,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344380734] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:44,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:44,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 15:20:44,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193293843] [2025-03-08 15:20:44,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:44,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 15:20:44,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:44,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 15:20:44,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:20:44,838 INFO L87 Difference]: Start difference. First operand 489 states and 782 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2025-03-08 15:20:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:45,253 INFO L93 Difference]: Finished difference Result 1465 states and 2348 transitions. [2025-03-08 15:20:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:20:45,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 360 [2025-03-08 15:20:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:45,259 INFO L225 Difference]: With dead ends: 1465 [2025-03-08 15:20:45,259 INFO L226 Difference]: Without dead ends: 979 [2025-03-08 15:20:45,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:20:45,261 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 285 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:45,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 890 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:20:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2025-03-08 15:20:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2025-03-08 15:20:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 740 states have (on average 1.4972972972972973) internal successors, (1108), 744 states have internal predecessors, (1108), 228 states have call successors, (228), 8 states have call predecessors, (228), 8 states have return successors, (228), 224 states have call predecessors, (228), 228 states have call successors, (228) [2025-03-08 15:20:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1564 transitions. [2025-03-08 15:20:45,350 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1564 transitions. Word has length 360 [2025-03-08 15:20:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:45,350 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1564 transitions. [2025-03-08 15:20:45,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2025-03-08 15:20:45,351 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1564 transitions. [2025-03-08 15:20:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-03-08 15:20:45,354 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:45,354 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:45,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:20:45,354 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:45,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1190159768, now seen corresponding path program 1 times [2025-03-08 15:20:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:45,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436589185] [2025-03-08 15:20:45,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:45,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:45,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:45,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:45,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:45,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-03-08 15:20:46,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:46,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436589185] [2025-03-08 15:20:46,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436589185] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:46,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:46,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:20:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676785896] [2025-03-08 15:20:46,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:46,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:20:46,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:46,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:20:46,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:20:46,729 INFO L87 Difference]: Start difference. First operand 977 states and 1564 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-03-08 15:20:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:47,795 INFO L93 Difference]: Finished difference Result 3739 states and 5971 transitions. [2025-03-08 15:20:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:20:47,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2025-03-08 15:20:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:47,810 INFO L225 Difference]: With dead ends: 3739 [2025-03-08 15:20:47,810 INFO L226 Difference]: Without dead ends: 2765 [2025-03-08 15:20:47,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:20:47,815 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 319 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:47,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 825 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 15:20:47,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2025-03-08 15:20:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2277. [2025-03-08 15:20:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1804 states have (on average 1.501108647450111) internal successors, (2708), 1812 states have internal predecessors, (2708), 456 states have call successors, (456), 16 states have call predecessors, (456), 16 states have return successors, (456), 448 states have call predecessors, (456), 456 states have call successors, (456) [2025-03-08 15:20:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3620 transitions. [2025-03-08 15:20:48,027 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3620 transitions. Word has length 360 [2025-03-08 15:20:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:48,028 INFO L471 AbstractCegarLoop]: Abstraction has 2277 states and 3620 transitions. [2025-03-08 15:20:48,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-03-08 15:20:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3620 transitions. [2025-03-08 15:20:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-03-08 15:20:48,033 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:48,033 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:48,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 15:20:48,034 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:48,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1201475895, now seen corresponding path program 1 times [2025-03-08 15:20:48,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:48,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044161259] [2025-03-08 15:20:48,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:48,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:48,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:48,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:48,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:48,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 129 proven. 33 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-03-08 15:20:49,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:49,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044161259] [2025-03-08 15:20:49,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044161259] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:49,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584791218] [2025-03-08 15:20:49,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:49,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:49,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:49,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:20:49,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 15:20:49,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:49,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:49,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:49,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:49,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 15:20:49,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2032 proven. 33 refuted. 0 times theorem prover too weak. 3875 trivial. 0 not checked. [2025-03-08 15:20:49,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:20:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 129 proven. 33 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-03-08 15:20:49,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584791218] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:20:49,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:20:49,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2025-03-08 15:20:49,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141044619] [2025-03-08 15:20:49,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:20:49,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 15:20:49,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:49,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 15:20:49,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-08 15:20:49,999 INFO L87 Difference]: Start difference. First operand 2277 states and 3620 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-08 15:20:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:51,545 INFO L93 Difference]: Finished difference Result 9243 states and 14562 transitions. [2025-03-08 15:20:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 15:20:51,546 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 360 [2025-03-08 15:20:51,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:51,582 INFO L225 Difference]: With dead ends: 9243 [2025-03-08 15:20:51,583 INFO L226 Difference]: Without dead ends: 6969 [2025-03-08 15:20:51,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 716 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2025-03-08 15:20:51,590 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 1002 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:51,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1296 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 15:20:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6969 states. [2025-03-08 15:20:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6969 to 2793. [2025-03-08 15:20:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2793 states, 2209 states have (on average 1.496152105024898) internal successors, (3305), 2220 states have internal predecessors, (3305), 556 states have call successors, (556), 27 states have call predecessors, (556), 27 states have return successors, (556), 545 states have call predecessors, (556), 556 states have call successors, (556) [2025-03-08 15:20:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 4417 transitions. [2025-03-08 15:20:51,921 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 4417 transitions. Word has length 360 [2025-03-08 15:20:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:51,923 INFO L471 AbstractCegarLoop]: Abstraction has 2793 states and 4417 transitions. [2025-03-08 15:20:51,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-08 15:20:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 4417 transitions. [2025-03-08 15:20:51,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-03-08 15:20:51,928 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:51,928 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:51,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 15:20:52,129 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,SelfDestructingSolverStorable5 [2025-03-08 15:20:52,130 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:52,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:52,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1412826808, now seen corresponding path program 1 times [2025-03-08 15:20:52,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:52,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466579089] [2025-03-08 15:20:52,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:52,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:52,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:52,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:52,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:52,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-03-08 15:20:53,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:53,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466579089] [2025-03-08 15:20:53,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466579089] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:53,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90473532] [2025-03-08 15:20:53,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:53,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:53,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:53,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:20:53,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 15:20:53,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-03-08 15:20:53,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-03-08 15:20:53,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:53,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:53,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 15:20:53,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2738 proven. 102 refuted. 0 times theorem prover too weak. 3100 trivial. 0 not checked. [2025-03-08 15:20:54,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:20:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-03-08 15:20:54,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90473532] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:20:54,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:20:54,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 21 [2025-03-08 15:20:54,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837175208] [2025-03-08 15:20:54,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:20:54,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-08 15:20:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:54,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-08 15:20:54,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2025-03-08 15:20:54,638 INFO L87 Difference]: Start difference. First operand 2793 states and 4417 transitions. Second operand has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 20 states have internal predecessors, (226), 6 states have call successors, (165), 4 states have call predecessors, (165), 7 states have return successors, (165), 6 states have call predecessors, (165), 6 states have call successors, (165) [2025-03-08 15:20:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:56,065 INFO L93 Difference]: Finished difference Result 7594 states and 11939 transitions. [2025-03-08 15:20:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 15:20:56,066 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 20 states have internal predecessors, (226), 6 states have call successors, (165), 4 states have call predecessors, (165), 7 states have return successors, (165), 6 states have call predecessors, (165), 6 states have call successors, (165) Word has length 360 [2025-03-08 15:20:56,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:56,086 INFO L225 Difference]: With dead ends: 7594 [2025-03-08 15:20:56,086 INFO L226 Difference]: Without dead ends: 4873 [2025-03-08 15:20:56,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2025-03-08 15:20:56,093 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 339 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:56,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1802 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 15:20:56,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2025-03-08 15:20:56,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4829. [2025-03-08 15:20:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4829 states, 3825 states have (on average 1.4852287581699346) internal successors, (5681), 3848 states have internal predecessors, (5681), 936 states have call successors, (936), 67 states have call predecessors, (936), 67 states have return successors, (936), 913 states have call predecessors, (936), 936 states have call successors, (936) [2025-03-08 15:20:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 7553 transitions. [2025-03-08 15:20:56,404 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 7553 transitions. Word has length 360 [2025-03-08 15:20:56,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:56,407 INFO L471 AbstractCegarLoop]: Abstraction has 4829 states and 7553 transitions. [2025-03-08 15:20:56,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 20 states have internal predecessors, (226), 6 states have call successors, (165), 4 states have call predecessors, (165), 7 states have return successors, (165), 6 states have call predecessors, (165), 6 states have call successors, (165) [2025-03-08 15:20:56,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 7553 transitions. [2025-03-08 15:20:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2025-03-08 15:20:56,412 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:56,412 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:56,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 15:20:56,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:56,613 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:56,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash 603695578, now seen corresponding path program 1 times [2025-03-08 15:20:56,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:56,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940300161] [2025-03-08 15:20:56,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:56,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 361 statements into 1 equivalence classes. [2025-03-08 15:20:56,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 361 of 361 statements. [2025-03-08 15:20:56,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:56,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 153 proven. 9 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-03-08 15:20:57,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:57,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940300161] [2025-03-08 15:20:57,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940300161] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:57,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839240044] [2025-03-08 15:20:57,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:57,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:57,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:57,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:20:57,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 15:20:57,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 361 statements into 1 equivalence classes. [2025-03-08 15:20:57,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 361 of 361 statements. [2025-03-08 15:20:57,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:57,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:57,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 15:20:57,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3825 proven. 330 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2025-03-08 15:20:58,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:20:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 282 proven. 348 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2025-03-08 15:20:59,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839240044] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:20:59,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:20:59,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 34 [2025-03-08 15:20:59,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19158224] [2025-03-08 15:20:59,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:20:59,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-08 15:20:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:59,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-08 15:20:59,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 15:20:59,312 INFO L87 Difference]: Start difference. First operand 4829 states and 7553 transitions. Second operand has 34 states, 32 states have (on average 7.4375) internal successors, (238), 30 states have internal predecessors, (238), 12 states have call successors, (146), 5 states have call predecessors, (146), 11 states have return successors, (147), 12 states have call predecessors, (147), 12 states have call successors, (147) [2025-03-08 15:21:10,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:10,547 INFO L93 Difference]: Finished difference Result 32721 states and 49089 transitions. [2025-03-08 15:21:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2025-03-08 15:21:10,548 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 7.4375) internal successors, (238), 30 states have internal predecessors, (238), 12 states have call successors, (146), 5 states have call predecessors, (146), 11 states have return successors, (147), 12 states have call predecessors, (147), 12 states have call successors, (147) Word has length 361 [2025-03-08 15:21:10,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:10,641 INFO L225 Difference]: With dead ends: 32721 [2025-03-08 15:21:10,641 INFO L226 Difference]: Without dead ends: 27972 [2025-03-08 15:21:10,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30948 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=12205, Invalid=59351, Unknown=0, NotChecked=0, Total=71556 [2025-03-08 15:21:10,669 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 6132 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 5161 mSolverCounterSat, 2176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6150 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 7337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2176 IncrementalHoareTripleChecker+Valid, 5161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:10,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6150 Valid, 3881 Invalid, 7337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2176 Valid, 5161 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-03-08 15:21:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27972 states. [2025-03-08 15:21:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27972 to 14221. [2025-03-08 15:21:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14221 states, 12048 states have (on average 1.486968791500664) internal successors, (17915), 12141 states have internal predecessors, (17915), 1881 states have call successors, (1881), 291 states have call predecessors, (1881), 291 states have return successors, (1881), 1788 states have call predecessors, (1881), 1881 states have call successors, (1881) [2025-03-08 15:21:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14221 states to 14221 states and 21677 transitions. [2025-03-08 15:21:11,772 INFO L78 Accepts]: Start accepts. Automaton has 14221 states and 21677 transitions. Word has length 361 [2025-03-08 15:21:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:11,773 INFO L471 AbstractCegarLoop]: Abstraction has 14221 states and 21677 transitions. [2025-03-08 15:21:11,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 7.4375) internal successors, (238), 30 states have internal predecessors, (238), 12 states have call successors, (146), 5 states have call predecessors, (146), 11 states have return successors, (147), 12 states have call predecessors, (147), 12 states have call successors, (147) [2025-03-08 15:21:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 14221 states and 21677 transitions. [2025-03-08 15:21:11,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2025-03-08 15:21:11,788 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:11,788 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:11,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 15:21:11,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:11,993 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:11,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:11,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1957088186, now seen corresponding path program 1 times [2025-03-08 15:21:11,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:11,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773420989] [2025-03-08 15:21:11,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:11,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:12,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 362 statements into 1 equivalence classes. [2025-03-08 15:21:12,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 362 of 362 statements. [2025-03-08 15:21:12,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:12,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 51 proven. 111 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-03-08 15:21:12,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:12,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773420989] [2025-03-08 15:21:12,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773420989] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:12,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84865878] [2025-03-08 15:21:12,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:12,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:12,912 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) [2025-03-08 15:21:12,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 15:21:13,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 362 statements into 1 equivalence classes. [2025-03-08 15:21:13,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 362 of 362 statements. [2025-03-08 15:21:13,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:13,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:13,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 15:21:13,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:21:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2604 proven. 111 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2025-03-08 15:21:13,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:21:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 51 proven. 111 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-03-08 15:21:13,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84865878] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:21:13,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:21:13,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 17 [2025-03-08 15:21:13,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095616800] [2025-03-08 15:21:13,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:21:13,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 15:21:13,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:13,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 15:21:13,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:21:13,933 INFO L87 Difference]: Start difference. First operand 14221 states and 21677 transitions. Second operand has 17 states, 16 states have (on average 11.125) internal successors, (178), 17 states have internal predecessors, (178), 7 states have call successors, (165), 3 states have call predecessors, (165), 6 states have return successors, (165), 7 states have call predecessors, (165), 7 states have call successors, (165) [2025-03-08 15:21:15,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:15,745 INFO L93 Difference]: Finished difference Result 36390 states and 55963 transitions. [2025-03-08 15:21:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 15:21:15,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 11.125) internal successors, (178), 17 states have internal predecessors, (178), 7 states have call successors, (165), 3 states have call predecessors, (165), 6 states have return successors, (165), 7 states have call predecessors, (165), 7 states have call successors, (165) Word has length 362 [2025-03-08 15:21:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:15,833 INFO L225 Difference]: With dead ends: 36390 [2025-03-08 15:21:15,833 INFO L226 Difference]: Without dead ends: 22269 [2025-03-08 15:21:15,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2025-03-08 15:21:15,851 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 771 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:15,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1673 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 15:21:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22269 states. [2025-03-08 15:21:16,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22269 to 14777. [2025-03-08 15:21:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14777 states, 12398 states have (on average 1.4870946926923698) internal successors, (18437), 12499 states have internal predecessors, (18437), 2055 states have call successors, (2055), 323 states have call predecessors, (2055), 323 states have return successors, (2055), 1954 states have call predecessors, (2055), 2055 states have call successors, (2055) [2025-03-08 15:21:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 22547 transitions. [2025-03-08 15:21:16,869 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 22547 transitions. Word has length 362 [2025-03-08 15:21:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:16,870 INFO L471 AbstractCegarLoop]: Abstraction has 14777 states and 22547 transitions. [2025-03-08 15:21:16,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 11.125) internal successors, (178), 17 states have internal predecessors, (178), 7 states have call successors, (165), 3 states have call predecessors, (165), 6 states have return successors, (165), 7 states have call predecessors, (165), 7 states have call successors, (165) [2025-03-08 15:21:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 22547 transitions. [2025-03-08 15:21:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2025-03-08 15:21:16,879 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:16,880 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:16,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 15:21:17,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:17,081 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:17,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:17,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1118025128, now seen corresponding path program 1 times [2025-03-08 15:21:17,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:17,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126506844] [2025-03-08 15:21:17,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:17,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:17,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-03-08 15:21:17,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-03-08 15:21:17,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:17,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-03-08 15:21:17,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:17,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126506844] [2025-03-08 15:21:17,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126506844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:21:17,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:21:17,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:21:17,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2943069] [2025-03-08 15:21:17,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:17,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:21:17,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:17,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:21:17,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:21:17,421 INFO L87 Difference]: Start difference. First operand 14777 states and 22547 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-03-08 15:21:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:18,827 INFO L93 Difference]: Finished difference Result 31579 states and 47972 transitions. [2025-03-08 15:21:18,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:21:18,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 363 [2025-03-08 15:21:18,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:18,887 INFO L225 Difference]: With dead ends: 31579 [2025-03-08 15:21:18,887 INFO L226 Difference]: Without dead ends: 23601 [2025-03-08 15:21:18,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:21:18,901 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 285 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:18,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 859 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:21:18,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23601 states. [2025-03-08 15:21:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23601 to 21173. [2025-03-08 15:21:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21173 states, 17754 states have (on average 1.4796102286808606) internal successors, (26269), 17895 states have internal predecessors, (26269), 2939 states have call successors, (2939), 479 states have call predecessors, (2939), 479 states have return successors, (2939), 2798 states have call predecessors, (2939), 2939 states have call successors, (2939) [2025-03-08 15:21:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21173 states to 21173 states and 32147 transitions. [2025-03-08 15:21:20,681 INFO L78 Accepts]: Start accepts. Automaton has 21173 states and 32147 transitions. Word has length 363 [2025-03-08 15:21:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:20,682 INFO L471 AbstractCegarLoop]: Abstraction has 21173 states and 32147 transitions. [2025-03-08 15:21:20,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-03-08 15:21:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 21173 states and 32147 transitions. [2025-03-08 15:21:20,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2025-03-08 15:21:20,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:20,688 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:20,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 15:21:20,689 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:20,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:20,689 INFO L85 PathProgramCache]: Analyzing trace with hash 712967078, now seen corresponding path program 1 times [2025-03-08 15:21:20,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:20,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023457027] [2025-03-08 15:21:20,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:20,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:20,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-03-08 15:21:20,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-03-08 15:21:20,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:20,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 258 proven. 60 refuted. 0 times theorem prover too weak. 5622 trivial. 0 not checked. [2025-03-08 15:21:25,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:25,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023457027] [2025-03-08 15:21:25,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023457027] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:25,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729925205] [2025-03-08 15:21:25,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:25,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:25,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:25,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:21:25,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 15:21:26,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-03-08 15:21:26,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-03-08 15:21:26,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:26,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:26,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-08 15:21:26,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:21:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 4219 proven. 201 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2025-03-08 15:21:35,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:21:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 153 proven. 9 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-03-08 15:21:36,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729925205] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:21:36,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:21:36,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 9] total 36 [2025-03-08 15:21:36,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671669312] [2025-03-08 15:21:36,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:21:36,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-08 15:21:36,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:36,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-08 15:21:36,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1088, Unknown=3, NotChecked=0, Total=1260 [2025-03-08 15:21:36,612 INFO L87 Difference]: Start difference. First operand 21173 states and 32147 transitions. Second operand has 36 states, 36 states have (on average 7.138888888888889) internal successors, (257), 34 states have internal predecessors, (257), 10 states have call successors, (147), 6 states have call predecessors, (147), 10 states have return successors, (148), 10 states have call predecessors, (148), 10 states have call successors, (148) [2025-03-08 15:21:43,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 15:21:51,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 15:21:55,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 15:21:59,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 15:22:03,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []