./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-83.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-83.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 af94c72fed5c617f2d62b60a9a463119b111eeac1c576534ea625be0d9ccdbbc --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:27:19,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:27:19,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:27:19,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:27:19,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:27:19,965 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:27:19,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:27:19,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:27:19,966 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:27:19,966 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:27:19,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:27:19,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:27:19,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:27:19,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:27:19,967 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:27:19,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:27:19,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:27:19,968 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:27:19,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:27:19,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:27:19,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:27:19,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:27:19,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:27:19,969 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:27:19,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:27:19,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:27:19,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:27:19,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:27:19,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:27:19,970 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 -> af94c72fed5c617f2d62b60a9a463119b111eeac1c576534ea625be0d9ccdbbc [2025-03-08 15:27:20,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:27:20,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:27:20,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:27:20,226 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:27:20,226 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:27:20,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-83.i [2025-03-08 15:27:21,422 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0da6787cc/d30cb2d5c777417491a0ec775558955d/FLAGaa9a09db0 [2025-03-08 15:27:21,657 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:27:21,658 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-83.i [2025-03-08 15:27:21,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0da6787cc/d30cb2d5c777417491a0ec775558955d/FLAGaa9a09db0 [2025-03-08 15:27:21,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0da6787cc/d30cb2d5c777417491a0ec775558955d [2025-03-08 15:27:21,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:27:21,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:27:21,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:27:21,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:27:21,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:27:21,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:27:21" (1/1) ... [2025-03-08 15:27:21,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30780e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:21, skipping insertion in model container [2025-03-08 15:27:21,686 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:27:21" (1/1) ... [2025-03-08 15:27:21,708 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:27:21,806 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-83.i[916,929] [2025-03-08 15:27:21,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:27:21,971 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:27:21,982 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-83.i[916,929] [2025-03-08 15:27:22,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:27:22,074 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:27:22,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22 WrapperNode [2025-03-08 15:27:22,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:27:22,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:27:22,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:27:22,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:27:22,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,150 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 449 [2025-03-08 15:27:22,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:27:22,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:27:22,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:27:22,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:27:22,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,210 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 15:27:22,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,228 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:27:22,265 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:27:22,266 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:27:22,266 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:27:22,267 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (1/1) ... [2025-03-08 15:27:22,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:27:22,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:27:22,293 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 15:27:22,299 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 15:27:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:27:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:27:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:27:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:27:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:27:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:27:22,411 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:27:22,412 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:27:23,068 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L353: havoc property_#t~bitwise38#1;havoc property_#t~short39#1;havoc property_#t~ite43#1;havoc property_#t~ite42#1;havoc property_#t~bitwise40#1;havoc property_#t~bitwise41#1;havoc property_#t~short44#1;havoc property_#t~ite47#1;havoc property_#t~ite46#1;havoc property_#t~bitwise45#1;havoc property_#t~short48#1; [2025-03-08 15:27:23,161 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2025-03-08 15:27:23,163 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:27:23,186 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:27:23,189 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:27:23,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:27:23 BoogieIcfgContainer [2025-03-08 15:27:23,189 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:27:23,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:27:23,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:27:23,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:27:23,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:27:21" (1/3) ... [2025-03-08 15:27:23,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e29f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:27:23, skipping insertion in model container [2025-03-08 15:27:23,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:27:22" (2/3) ... [2025-03-08 15:27:23,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e29f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:27:23, skipping insertion in model container [2025-03-08 15:27:23,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:27:23" (3/3) ... [2025-03-08 15:27:23,197 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-83.i [2025-03-08 15:27:23,207 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:27:23,210 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-83.i that has 2 procedures, 188 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:27:23,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:27:23,271 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;@24957b7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:27:23,271 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:27:23,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 129 states have (on average 1.4806201550387597) internal successors, (191), 130 states have internal predecessors, (191), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-08 15:27:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-03-08 15:27:23,291 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:23,292 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:23,292 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:23,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2042278283, now seen corresponding path program 1 times [2025-03-08 15:27:23,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:23,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159528874] [2025-03-08 15:27:23,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:23,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:23,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-03-08 15:27:23,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-03-08 15:27:23,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:23,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-03-08 15:27:23,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159528874] [2025-03-08 15:27:23,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159528874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:27:23,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:27:23,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:27:23,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787430173] [2025-03-08 15:27:23,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:27:23,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:27:23,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:23,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:27:23,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:27:23,920 INFO L87 Difference]: Start difference. First operand has 188 states, 129 states have (on average 1.4806201550387597) internal successors, (191), 130 states have internal predecessors, (191), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-03-08 15:27:24,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:24,061 INFO L93 Difference]: Finished difference Result 526 states and 953 transitions. [2025-03-08 15:27:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:27:24,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 353 [2025-03-08 15:27:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:24,074 INFO L225 Difference]: With dead ends: 526 [2025-03-08 15:27:24,074 INFO L226 Difference]: Without dead ends: 341 [2025-03-08 15:27:24,079 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 15:27:24,081 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 241 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:24,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 552 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:27:24,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2025-03-08 15:27:24,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 338. [2025-03-08 15:27:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 237 states have (on average 1.4472573839662448) internal successors, (343), 238 states have internal predecessors, (343), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2025-03-08 15:27:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 539 transitions. [2025-03-08 15:27:24,165 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 539 transitions. Word has length 353 [2025-03-08 15:27:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:24,168 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 539 transitions. [2025-03-08 15:27:24,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-03-08 15:27:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 539 transitions. [2025-03-08 15:27:24,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-03-08 15:27:24,174 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:24,174 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:24,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 15:27:24,175 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:24,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1349176586, now seen corresponding path program 1 times [2025-03-08 15:27:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:24,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813141354] [2025-03-08 15:27:24,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:24,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:24,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-03-08 15:27:24,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-03-08 15:27:24,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:24,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-03-08 15:27:24,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:24,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813141354] [2025-03-08 15:27:24,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813141354] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:27:24,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:27:24,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:27:24,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735854665] [2025-03-08 15:27:24,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:27:24,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:27:24,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:24,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:27:24,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:27:24,474 INFO L87 Difference]: Start difference. First operand 338 states and 539 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-03-08 15:27:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:24,658 INFO L93 Difference]: Finished difference Result 1000 states and 1595 transitions. [2025-03-08 15:27:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:27:24,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 353 [2025-03-08 15:27:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:24,669 INFO L225 Difference]: With dead ends: 1000 [2025-03-08 15:27:24,669 INFO L226 Difference]: Without dead ends: 665 [2025-03-08 15:27:24,671 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 15:27:24,672 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 272 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:24,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 726 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:27:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-03-08 15:27:24,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 362. [2025-03-08 15:27:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 261 states have (on average 1.4482758620689655) internal successors, (378), 262 states have internal predecessors, (378), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2025-03-08 15:27:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 574 transitions. [2025-03-08 15:27:24,742 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 574 transitions. Word has length 353 [2025-03-08 15:27:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:24,743 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 574 transitions. [2025-03-08 15:27:24,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-03-08 15:27:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 574 transitions. [2025-03-08 15:27:24,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-03-08 15:27:24,749 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:24,749 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:24,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:27:24,750 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:24,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:24,750 INFO L85 PathProgramCache]: Analyzing trace with hash 762113783, now seen corresponding path program 1 times [2025-03-08 15:27:24,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:24,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662255911] [2025-03-08 15:27:24,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:24,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-03-08 15:27:24,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-03-08 15:27:24,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:24,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-03-08 15:27:24,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:24,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662255911] [2025-03-08 15:27:24,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662255911] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:27:24,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:27:24,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:27:24,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786673400] [2025-03-08 15:27:24,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:27:24,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:27:24,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:24,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:27:24,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:27:24,949 INFO L87 Difference]: Start difference. First operand 362 states and 574 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-03-08 15:27:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:25,061 INFO L93 Difference]: Finished difference Result 1024 states and 1624 transitions. [2025-03-08 15:27:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:27:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 353 [2025-03-08 15:27:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:25,068 INFO L225 Difference]: With dead ends: 1024 [2025-03-08 15:27:25,068 INFO L226 Difference]: Without dead ends: 665 [2025-03-08 15:27:25,069 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 15:27:25,071 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 280 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:25,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 633 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:27:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-03-08 15:27:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 362. [2025-03-08 15:27:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 261 states have (on average 1.4329501915708813) internal successors, (374), 262 states have internal predecessors, (374), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2025-03-08 15:27:25,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 570 transitions. [2025-03-08 15:27:25,135 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 570 transitions. Word has length 353 [2025-03-08 15:27:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:25,136 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 570 transitions. [2025-03-08 15:27:25,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-03-08 15:27:25,136 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 570 transitions. [2025-03-08 15:27:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-03-08 15:27:25,139 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:25,140 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:25,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:27:25,140 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:25,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash 263552450, now seen corresponding path program 1 times [2025-03-08 15:27:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115944441] [2025-03-08 15:27:25,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:25,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:27:25,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:27:25,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:25,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-03-08 15:27:26,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115944441] [2025-03-08 15:27:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115944441] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:27:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530966096] [2025-03-08 15:27:26,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:26,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:26,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:27:26,431 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 15:27:26,433 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 15:27:26,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:27:26,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:27:26,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:26,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:26,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 15:27:26,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:27:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3222 proven. 246 refuted. 0 times theorem prover too weak. 2692 trivial. 0 not checked. [2025-03-08 15:27:27,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:27:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 78 proven. 249 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-03-08 15:27:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530966096] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:27:28,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:27:28,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 26 [2025-03-08 15:27:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837469925] [2025-03-08 15:27:28,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:27:28,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-08 15:27:28,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:28,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-08 15:27:28,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2025-03-08 15:27:28,435 INFO L87 Difference]: Start difference. First operand 362 states and 570 transitions. Second operand has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 5 states have call successors, (162), 3 states have call predecessors, (162), 7 states have return successors, (163), 5 states have call predecessors, (163), 5 states have call successors, (163) [2025-03-08 15:27:32,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:32,073 INFO L93 Difference]: Finished difference Result 1741 states and 2597 transitions. [2025-03-08 15:27:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2025-03-08 15:27:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 5 states have call successors, (162), 3 states have call predecessors, (162), 7 states have return successors, (163), 5 states have call predecessors, (163), 5 states have call successors, (163) Word has length 354 [2025-03-08 15:27:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:32,084 INFO L225 Difference]: With dead ends: 1741 [2025-03-08 15:27:32,085 INFO L226 Difference]: Without dead ends: 1382 [2025-03-08 15:27:32,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2582 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1772, Invalid=6600, Unknown=0, NotChecked=0, Total=8372 [2025-03-08 15:27:32,091 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 1787 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 2941 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:32,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 2123 Invalid, 3676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2941 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-08 15:27:32,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2025-03-08 15:27:32,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 852. [2025-03-08 15:27:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 641 states have (on average 1.3946957878315132) internal successors, (894), 646 states have internal predecessors, (894), 194 states have call successors, (194), 16 states have call predecessors, (194), 16 states have return successors, (194), 189 states have call predecessors, (194), 194 states have call successors, (194) [2025-03-08 15:27:32,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1282 transitions. [2025-03-08 15:27:32,171 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1282 transitions. Word has length 354 [2025-03-08 15:27:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:32,172 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1282 transitions. [2025-03-08 15:27:32,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 5 states have call successors, (162), 3 states have call predecessors, (162), 7 states have return successors, (163), 5 states have call predecessors, (163), 5 states have call successors, (163) [2025-03-08 15:27:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1282 transitions. [2025-03-08 15:27:32,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-03-08 15:27:32,175 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:32,176 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:32,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 15:27:32,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:32,376 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:32,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1430004118, now seen corresponding path program 1 times [2025-03-08 15:27:32,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:32,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438819850] [2025-03-08 15:27:32,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:32,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:32,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:27:32,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:27:32,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:32,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 126 proven. 39 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-03-08 15:27:32,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:32,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438819850] [2025-03-08 15:27:32,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438819850] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:27:32,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45622445] [2025-03-08 15:27:32,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:32,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:32,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:27:32,953 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 15:27:32,954 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 15:27:33,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:27:33,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:27:33,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:33,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:33,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:27:33,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:27:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2323 proven. 39 refuted. 0 times theorem prover too weak. 3798 trivial. 0 not checked. [2025-03-08 15:27:33,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:27:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 126 proven. 39 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-03-08 15:27:33,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45622445] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:27:33,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:27:33,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-08 15:27:33,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070875547] [2025-03-08 15:27:33,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:27:33,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:27:33,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:33,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:27:33,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:27:33,429 INFO L87 Difference]: Start difference. First operand 852 states and 1282 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2025-03-08 15:27:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:33,923 INFO L93 Difference]: Finished difference Result 1396 states and 2088 transitions. [2025-03-08 15:27:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:27:33,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 355 [2025-03-08 15:27:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:33,928 INFO L225 Difference]: With dead ends: 1396 [2025-03-08 15:27:33,930 INFO L226 Difference]: Without dead ends: 547 [2025-03-08 15:27:33,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 707 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:27:33,935 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 209 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:33,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 758 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 15:27:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2025-03-08 15:27:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 532. [2025-03-08 15:27:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 371 states have (on average 1.3396226415094339) internal successors, (497), 374 states have internal predecessors, (497), 146 states have call successors, (146), 14 states have call predecessors, (146), 14 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2025-03-08 15:27:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 789 transitions. [2025-03-08 15:27:33,973 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 789 transitions. Word has length 355 [2025-03-08 15:27:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:33,973 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 789 transitions. [2025-03-08 15:27:33,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2025-03-08 15:27:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 789 transitions. [2025-03-08 15:27:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-03-08 15:27:33,978 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:33,979 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:33,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 15:27:34,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:34,180 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:34,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:34,180 INFO L85 PathProgramCache]: Analyzing trace with hash 397178728, now seen corresponding path program 1 times [2025-03-08 15:27:34,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:34,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817036432] [2025-03-08 15:27:34,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:34,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:34,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:27:34,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:27:34,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:34,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-03-08 15:27:34,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:34,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817036432] [2025-03-08 15:27:34,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817036432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:27:34,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:27:34,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 15:27:34,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757422617] [2025-03-08 15:27:34,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:27:34,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 15:27:34,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:34,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 15:27:34,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-08 15:27:34,799 INFO L87 Difference]: Start difference. First operand 532 states and 789 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2025-03-08 15:27:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:35,620 INFO L93 Difference]: Finished difference Result 2216 states and 3296 transitions. [2025-03-08 15:27:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 15:27:35,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) Word has length 356 [2025-03-08 15:27:35,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:35,631 INFO L225 Difference]: With dead ends: 2216 [2025-03-08 15:27:35,631 INFO L226 Difference]: Without dead ends: 1773 [2025-03-08 15:27:35,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:27:35,633 INFO L435 NwaCegarLoop]: 349 mSDtfsCounter, 1111 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:35,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1347 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 15:27:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2025-03-08 15:27:35,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1378. [2025-03-08 15:27:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1011 states have (on average 1.3699307616221563) internal successors, (1385), 1019 states have internal predecessors, (1385), 334 states have call successors, (334), 32 states have call predecessors, (334), 32 states have return successors, (334), 326 states have call predecessors, (334), 334 states have call successors, (334) [2025-03-08 15:27:35,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 2053 transitions. [2025-03-08 15:27:35,712 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 2053 transitions. Word has length 356 [2025-03-08 15:27:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:35,712 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 2053 transitions. [2025-03-08 15:27:35,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2025-03-08 15:27:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 2053 transitions. [2025-03-08 15:27:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-03-08 15:27:35,716 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:35,716 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:35,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:27:35,717 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:35,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1947488313, now seen corresponding path program 1 times [2025-03-08 15:27:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:35,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653570965] [2025-03-08 15:27:35,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:35,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:27:35,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:27:35,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:35,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-03-08 15:27:36,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:36,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653570965] [2025-03-08 15:27:36,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653570965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:27:36,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:27:36,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:27:36,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523300465] [2025-03-08 15:27:36,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:27:36,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:27:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:36,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:27:36,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:27:36,109 INFO L87 Difference]: Start difference. First operand 1378 states and 2053 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-03-08 15:27:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:36,551 INFO L93 Difference]: Finished difference Result 3414 states and 5091 transitions. [2025-03-08 15:27:36,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:27:36,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 356 [2025-03-08 15:27:36,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:36,564 INFO L225 Difference]: With dead ends: 3414 [2025-03-08 15:27:36,564 INFO L226 Difference]: Without dead ends: 2129 [2025-03-08 15:27:36,567 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 15:27:36,567 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 524 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:36,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 813 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:27:36,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2025-03-08 15:27:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1368. [2025-03-08 15:27:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 999 states have (on average 1.3653653653653655) internal successors, (1364), 1007 states have internal predecessors, (1364), 334 states have call successors, (334), 34 states have call predecessors, (334), 34 states have return successors, (334), 326 states have call predecessors, (334), 334 states have call successors, (334) [2025-03-08 15:27:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2032 transitions. [2025-03-08 15:27:36,662 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2032 transitions. Word has length 356 [2025-03-08 15:27:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:36,663 INFO L471 AbstractCegarLoop]: Abstraction has 1368 states and 2032 transitions. [2025-03-08 15:27:36,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-03-08 15:27:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2032 transitions. [2025-03-08 15:27:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-03-08 15:27:36,667 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:36,668 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:36,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 15:27:36,668 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:36,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:36,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1047520900, now seen corresponding path program 1 times [2025-03-08 15:27:36,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:36,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659206384] [2025-03-08 15:27:36,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:36,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:36,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:27:36,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:27:36,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:36,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 123 proven. 42 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-03-08 15:27:37,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659206384] [2025-03-08 15:27:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659206384] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:27:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094450937] [2025-03-08 15:27:37,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:37,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:37,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:27:37,673 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 15:27:37,674 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 15:27:37,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:27:37,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:27:37,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:37,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:37,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 15:27:37,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:27:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2559 proven. 45 refuted. 0 times theorem prover too weak. 3556 trivial. 0 not checked. [2025-03-08 15:27:38,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:27:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 279 proven. 48 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-03-08 15:27:38,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094450937] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:27:38,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:27:38,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2025-03-08 15:27:38,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18127247] [2025-03-08 15:27:38,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:27:38,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 15:27:38,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:38,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 15:27:38,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-03-08 15:27:38,526 INFO L87 Difference]: Start difference. First operand 1368 states and 2032 transitions. Second operand has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 5 states have call successors, (126), 3 states have call predecessors, (126), 7 states have return successors, (127), 5 states have call predecessors, (127), 5 states have call successors, (127) [2025-03-08 15:27:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:39,479 INFO L93 Difference]: Finished difference Result 2703 states and 3990 transitions. [2025-03-08 15:27:39,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 15:27:39,480 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 5 states have call successors, (126), 3 states have call predecessors, (126), 7 states have return successors, (127), 5 states have call predecessors, (127), 5 states have call successors, (127) Word has length 356 [2025-03-08 15:27:39,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:39,487 INFO L225 Difference]: With dead ends: 2703 [2025-03-08 15:27:39,488 INFO L226 Difference]: Without dead ends: 1428 [2025-03-08 15:27:39,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 703 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 15:27:39,490 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1112 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:39,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1011 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 15:27:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2025-03-08 15:27:39,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1381. [2025-03-08 15:27:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1010 states have (on average 1.3277227722772278) internal successors, (1341), 1018 states have internal predecessors, (1341), 332 states have call successors, (332), 38 states have call predecessors, (332), 38 states have return successors, (332), 324 states have call predecessors, (332), 332 states have call successors, (332) [2025-03-08 15:27:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2005 transitions. [2025-03-08 15:27:39,595 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2005 transitions. Word has length 356 [2025-03-08 15:27:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:39,596 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 2005 transitions. [2025-03-08 15:27:39,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 5 states have call successors, (126), 3 states have call predecessors, (126), 7 states have return successors, (127), 5 states have call predecessors, (127), 5 states have call successors, (127) [2025-03-08 15:27:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2005 transitions. [2025-03-08 15:27:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2025-03-08 15:27:39,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:39,599 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:39,607 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 15:27:39,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:39,800 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:39,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:39,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1017394902, now seen corresponding path program 1 times [2025-03-08 15:27:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:39,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727142891] [2025-03-08 15:27:39,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:39,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:39,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-03-08 15:27:40,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-03-08 15:27:40,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:40,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-03-08 15:27:40,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:40,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727142891] [2025-03-08 15:27:40,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727142891] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:27:40,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65828553] [2025-03-08 15:27:40,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:40,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:40,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:27:40,359 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 15:27:40,361 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 15:27:40,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-03-08 15:27:40,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-03-08 15:27:40,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:40,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:40,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 15:27:40,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:27:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3563 proven. 192 refuted. 0 times theorem prover too weak. 2405 trivial. 0 not checked. [2025-03-08 15:27:41,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:27:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 132 proven. 195 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-03-08 15:27:41,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65828553] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:27:41,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:27:41,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2025-03-08 15:27:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582588246] [2025-03-08 15:27:41,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:27:41,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 15:27:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:41,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 15:27:41,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-03-08 15:27:41,426 INFO L87 Difference]: Start difference. First operand 1381 states and 2005 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 6 states have call successors, (157), 3 states have call predecessors, (157), 7 states have return successors, (159), 6 states have call predecessors, (159), 6 states have call successors, (159) [2025-03-08 15:27:42,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:42,289 INFO L93 Difference]: Finished difference Result 2960 states and 4216 transitions. [2025-03-08 15:27:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 15:27:42,290 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 6 states have call successors, (157), 3 states have call predecessors, (157), 7 states have return successors, (159), 6 states have call predecessors, (159), 6 states have call successors, (159) Word has length 357 [2025-03-08 15:27:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:42,298 INFO L225 Difference]: With dead ends: 2960 [2025-03-08 15:27:42,298 INFO L226 Difference]: Without dead ends: 1669 [2025-03-08 15:27:42,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 706 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2025-03-08 15:27:42,302 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 808 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:42,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 951 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 15:27:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2025-03-08 15:27:42,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1366. [2025-03-08 15:27:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1031 states have (on average 1.3191076624636275) internal successors, (1360), 1039 states have internal predecessors, (1360), 278 states have call successors, (278), 56 states have call predecessors, (278), 56 states have return successors, (278), 270 states have call predecessors, (278), 278 states have call successors, (278) [2025-03-08 15:27:42,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1916 transitions. [2025-03-08 15:27:42,428 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1916 transitions. Word has length 357 [2025-03-08 15:27:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:42,429 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 1916 transitions. [2025-03-08 15:27:42,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 6 states have call successors, (157), 3 states have call predecessors, (157), 7 states have return successors, (159), 6 states have call predecessors, (159), 6 states have call successors, (159) [2025-03-08 15:27:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1916 transitions. [2025-03-08 15:27:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2025-03-08 15:27:42,431 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:42,431 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:42,439 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 15:27:42,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:42,632 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:42,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash 615409097, now seen corresponding path program 1 times [2025-03-08 15:27:42,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:42,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385799607] [2025-03-08 15:27:42,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:42,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-03-08 15:27:42,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-03-08 15:27:42,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:42,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 138 proven. 186 refuted. 0 times theorem prover too weak. 5836 trivial. 0 not checked. [2025-03-08 15:27:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385799607] [2025-03-08 15:27:43,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385799607] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:27:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808766472] [2025-03-08 15:27:43,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:43,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:43,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:27:43,346 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 15:27:43,348 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 15:27:43,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-03-08 15:27:43,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-03-08 15:27:43,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:43,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:43,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 15:27:43,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:27:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3955 proven. 234 refuted. 0 times theorem prover too weak. 1971 trivial. 0 not checked. [2025-03-08 15:27:44,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:27:44,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808766472] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:27:44,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 15:27:44,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2025-03-08 15:27:44,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787255029] [2025-03-08 15:27:44,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 15:27:44,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 15:27:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:44,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 15:27:44,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2025-03-08 15:27:44,783 INFO L87 Difference]: Start difference. First operand 1366 states and 1916 transitions. Second operand has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 8 states have call successors, (112), 5 states have call predecessors, (112), 8 states have return successors, (112), 8 states have call predecessors, (112), 8 states have call successors, (112) [2025-03-08 15:27:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:45,790 INFO L93 Difference]: Finished difference Result 2924 states and 4059 transitions. [2025-03-08 15:27:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 15:27:45,791 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 8 states have call successors, (112), 5 states have call predecessors, (112), 8 states have return successors, (112), 8 states have call predecessors, (112), 8 states have call successors, (112) Word has length 357 [2025-03-08 15:27:45,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:45,799 INFO L225 Difference]: With dead ends: 2924 [2025-03-08 15:27:45,799 INFO L226 Difference]: Without dead ends: 1660 [2025-03-08 15:27:45,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=1095, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 15:27:45,803 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 579 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:45,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1932 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 15:27:45,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2025-03-08 15:27:45,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1401. [2025-03-08 15:27:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1052 states have (on average 1.3051330798479088) internal successors, (1373), 1060 states have internal predecessors, (1373), 278 states have call successors, (278), 70 states have call predecessors, (278), 70 states have return successors, (278), 270 states have call predecessors, (278), 278 states have call successors, (278) [2025-03-08 15:27:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1929 transitions. [2025-03-08 15:27:45,933 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1929 transitions. Word has length 357 [2025-03-08 15:27:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:45,934 INFO L471 AbstractCegarLoop]: Abstraction has 1401 states and 1929 transitions. [2025-03-08 15:27:45,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 8 states have call successors, (112), 5 states have call predecessors, (112), 8 states have return successors, (112), 8 states have call predecessors, (112), 8 states have call successors, (112) [2025-03-08 15:27:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1929 transitions. [2025-03-08 15:27:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2025-03-08 15:27:45,936 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:45,936 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:45,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 15:27:46,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 15:27:46,138 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:46,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:46,139 INFO L85 PathProgramCache]: Analyzing trace with hash 627223687, now seen corresponding path program 1 times [2025-03-08 15:27:46,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:46,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856034863] [2025-03-08 15:27:46,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:46,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:46,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-03-08 15:27:46,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-03-08 15:27:46,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:46,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 12 proven. 153 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-03-08 15:27:46,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:27:46,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856034863] [2025-03-08 15:27:46,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856034863] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:27:46,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035700016] [2025-03-08 15:27:46,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:46,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:46,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:27:46,625 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 15:27:46,626 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 15:27:46,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-03-08 15:27:46,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-03-08 15:27:46,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:46,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:46,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 15:27:46,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:27:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 932 proven. 300 refuted. 0 times theorem prover too weak. 4928 trivial. 0 not checked. [2025-03-08 15:27:47,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:27:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 12 proven. 153 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-03-08 15:27:48,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035700016] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:27:48,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:27:48,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 14 [2025-03-08 15:27:48,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166690805] [2025-03-08 15:27:48,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:27:48,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 15:27:48,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:48,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 15:27:48,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2025-03-08 15:27:48,041 INFO L87 Difference]: Start difference. First operand 1401 states and 1929 transitions. Second operand has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (159), 4 states have call predecessors, (159), 4 states have call successors, (159) [2025-03-08 15:27:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:27:49,626 INFO L93 Difference]: Finished difference Result 5920 states and 7942 transitions. [2025-03-08 15:27:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-08 15:27:49,627 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (159), 4 states have call predecessors, (159), 4 states have call successors, (159) Word has length 358 [2025-03-08 15:27:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:27:49,641 INFO L225 Difference]: With dead ends: 5920 [2025-03-08 15:27:49,641 INFO L226 Difference]: Without dead ends: 4637 [2025-03-08 15:27:49,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=391, Invalid=1015, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 15:27:49,644 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 916 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 15:27:49,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1520 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 15:27:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4637 states. [2025-03-08 15:27:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4637 to 2648. [2025-03-08 15:27:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 1984 states have (on average 1.2661290322580645) internal successors, (2512), 2001 states have internal predecessors, (2512), 508 states have call successors, (508), 155 states have call predecessors, (508), 155 states have return successors, (508), 491 states have call predecessors, (508), 508 states have call successors, (508) [2025-03-08 15:27:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3528 transitions. [2025-03-08 15:27:49,968 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3528 transitions. Word has length 358 [2025-03-08 15:27:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:27:49,969 INFO L471 AbstractCegarLoop]: Abstraction has 2648 states and 3528 transitions. [2025-03-08 15:27:49,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (159), 4 states have call predecessors, (159), 4 states have call successors, (159) [2025-03-08 15:27:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3528 transitions. [2025-03-08 15:27:49,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2025-03-08 15:27:49,979 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:27:49,979 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:49,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 15:27:50,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:50,180 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:27:50,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:27:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash 756244406, now seen corresponding path program 1 times [2025-03-08 15:27:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:27:50,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038840928] [2025-03-08 15:27:50,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:27:50,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-03-08 15:27:50,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-03-08 15:27:50,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:50,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:27:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925934028] [2025-03-08 15:27:50,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:27:50,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:27:50,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:27:50,473 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:27:50,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 15:27:50,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-03-08 15:27:50,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-03-08 15:27:50,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:27:50,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:27:50,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 15:27:50,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:27:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 800 proven. 453 refuted. 0 times theorem prover too weak. 4907 trivial. 0 not checked. [2025-03-08 15:27:51,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:28:11,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:28:11,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038840928] [2025-03-08 15:28:11,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:28:11,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925934028] [2025-03-08 15:28:11,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925934028] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:28:11,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:28:11,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2025-03-08 15:28:11,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332978191] [2025-03-08 15:28:11,146 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 15:28:11,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 15:28:11,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:28:11,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 15:28:11,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=244, Unknown=4, NotChecked=0, Total=306 [2025-03-08 15:28:11,147 INFO L87 Difference]: Start difference. First operand 2648 states and 3528 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (56), 4 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2025-03-08 15:28:19,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:28:19,064 INFO L93 Difference]: Finished difference Result 5318 states and 7045 transitions. [2025-03-08 15:28:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 15:28:19,065 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (56), 4 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) Word has length 359 [2025-03-08 15:28:19,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:28:19,078 INFO L225 Difference]: With dead ends: 5318 [2025-03-08 15:28:19,079 INFO L226 Difference]: Without dead ends: 2796 [2025-03-08 15:28:19,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=117, Invalid=431, Unknown=4, NotChecked=0, Total=552 [2025-03-08 15:28:19,084 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 573 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:28:19,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1423 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2025-03-08 15:28:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2025-03-08 15:28:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2414. [2025-03-08 15:28:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 1786 states have (on average 1.265397536394177) internal successors, (2260), 1797 states have internal predecessors, (2260), 484 states have call successors, (484), 143 states have call predecessors, (484), 143 states have return successors, (484), 473 states have call predecessors, (484), 484 states have call successors, (484) [2025-03-08 15:28:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3228 transitions. [2025-03-08 15:28:19,351 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3228 transitions. Word has length 359 [2025-03-08 15:28:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:28:19,353 INFO L471 AbstractCegarLoop]: Abstraction has 2414 states and 3228 transitions. [2025-03-08 15:28:19,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (56), 4 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2025-03-08 15:28:19,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3228 transitions. [2025-03-08 15:28:19,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2025-03-08 15:28:19,356 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:28:19,356 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:28:19,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 15:28:19,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:28:19,560 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:28:19,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:28:19,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1795285417, now seen corresponding path program 1 times [2025-03-08 15:28:19,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:28:19,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360667238] [2025-03-08 15:28:19,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:28:19,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:28:19,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-03-08 15:28:19,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-03-08 15:28:19,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:28:19,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:28:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-03-08 15:28:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:28:20,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360667238] [2025-03-08 15:28:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360667238] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:28:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794879728] [2025-03-08 15:28:20,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:28:20,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:28:20,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:28:20,683 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:28:20,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 15:28:20,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-03-08 15:28:20,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-03-08 15:28:20,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:28:20,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:28:20,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 15:28:20,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:28:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2972 proven. 258 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2025-03-08 15:28:33,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:28:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 66 proven. 261 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-03-08 15:28:42,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794879728] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:28:42,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:28:42,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 12] total 26 [2025-03-08 15:28:42,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926354766] [2025-03-08 15:28:42,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:28:42,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-08 15:28:42,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:28:42,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-08 15:28:42,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2025-03-08 15:28:42,400 INFO L87 Difference]: Start difference. First operand 2414 states and 3228 transitions. Second operand has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 26 states have internal predecessors, (241), 8 states have call successors, (168), 4 states have call predecessors, (168), 8 states have return successors, (168), 5 states have call predecessors, (168), 8 states have call successors, (168)