./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.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_amount500_file-76.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 8186639625ce393affc636d71862385ab5976ddbf9eeeac19c1ff9ee758a31c5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:47:24,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:47:24,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:47:24,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:47:24,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:47:24,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:47:24,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:47:24,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:47:24,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:47:24,250 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:47:24,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:47:24,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:47:24,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:47:24,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:47:24,252 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:47:24,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:47:24,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:47:24,254 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 -> 8186639625ce393affc636d71862385ab5976ddbf9eeeac19c1ff9ee758a31c5 [2025-03-08 15:47:24,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:47:24,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:47:24,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:47:24,497 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:47:24,497 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:47:24,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i [2025-03-08 15:47:25,623 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d995506/c5d064f1172e4ad68786fdea94d1824e/FLAGec7e13b7a [2025-03-08 15:47:25,911 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:47:25,912 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i [2025-03-08 15:47:25,925 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d995506/c5d064f1172e4ad68786fdea94d1824e/FLAGec7e13b7a [2025-03-08 15:47:25,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d995506/c5d064f1172e4ad68786fdea94d1824e [2025-03-08 15:47:25,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:47:25,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:47:25,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:47:25,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:47:25,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:47:25,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:47:25" (1/1) ... [2025-03-08 15:47:25,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34237d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:25, skipping insertion in model container [2025-03-08 15:47:25,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:47:25" (1/1) ... [2025-03-08 15:47:25,977 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:47:26,085 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_amount500_file-76.i[916,929] [2025-03-08 15:47:26,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:47:26,346 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:47:26,354 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_amount500_file-76.i[916,929] [2025-03-08 15:47:26,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:47:26,449 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:47:26,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26 WrapperNode [2025-03-08 15:47:26,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:47:26,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:47:26,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:47:26,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:47:26,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,564 INFO L138 Inliner]: procedures = 26, calls = 108, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 811 [2025-03-08 15:47:26,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:47:26,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:47:26,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:47:26,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:47:26,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,669 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 15:47:26,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,670 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,706 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:47:26,743 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:47:26,743 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:47:26,743 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:47:26,745 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (1/1) ... [2025-03-08 15:47:26,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:47:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:26,771 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 15:47:26,776 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 15:47:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:47:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:47:26,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:47:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:47:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:47:26,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:47:26,918 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:47:26,919 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:47:27,851 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L697: havoc property_#t~bitwise68#1;havoc property_#t~short69#1;havoc property_#t~bitwise70#1;havoc property_#t~short71#1;havoc property_#t~ite74#1;havoc property_#t~bitwise72#1;havoc property_#t~bitwise73#1;havoc property_#t~short75#1;havoc property_#t~bitwise76#1;havoc property_#t~ite78#1;havoc property_#t~bitwise77#1;havoc property_#t~short79#1; [2025-03-08 15:47:28,006 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2025-03-08 15:47:28,006 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:47:28,042 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:47:28,045 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:47:28,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:47:28 BoogieIcfgContainer [2025-03-08 15:47:28,045 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:47:28,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:47:28,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:47:28,051 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:47:28,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:47:25" (1/3) ... [2025-03-08 15:47:28,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737364ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:47:28, skipping insertion in model container [2025-03-08 15:47:28,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:26" (2/3) ... [2025-03-08 15:47:28,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737364ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:47:28, skipping insertion in model container [2025-03-08 15:47:28,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:47:28" (3/3) ... [2025-03-08 15:47:28,054 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-76.i [2025-03-08 15:47:28,066 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:47:28,069 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-76.i that has 2 procedures, 327 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:47:28,134 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:47:28,146 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;@35f77a05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:47:28,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:47:28,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 229 states have (on average 1.51528384279476) internal successors, (347), 230 states have internal predecessors, (347), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-03-08 15:47:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-03-08 15:47:28,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:28,187 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:28,188 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:28,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2038127586, now seen corresponding path program 1 times [2025-03-08 15:47:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:28,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583139858] [2025-03-08 15:47:28,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:28,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:28,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-08 15:47:28,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-08 15:47:28,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:28,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2025-03-08 15:47:28,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:28,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583139858] [2025-03-08 15:47:28,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583139858] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:47:28,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958764392] [2025-03-08 15:47:28,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:28,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:28,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:28,930 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 15:47:28,932 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 15:47:29,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-08 15:47:29,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-08 15:47:29,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:29,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:29,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:47:29,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:47:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2025-03-08 15:47:29,433 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:47:29,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958764392] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:29,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:47:29,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:47:29,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751379611] [2025-03-08 15:47:29,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:29,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:47:29,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:29,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:47:29,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:47:29,457 INFO L87 Difference]: Start difference. First operand has 327 states, 229 states have (on average 1.51528384279476) internal successors, (347), 230 states have internal predecessors, (347), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2025-03-08 15:47:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:29,530 INFO L93 Difference]: Finished difference Result 648 states and 1164 transitions. [2025-03-08 15:47:29,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:47:29,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) Word has length 622 [2025-03-08 15:47:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:29,542 INFO L225 Difference]: With dead ends: 648 [2025-03-08 15:47:29,544 INFO L226 Difference]: Without dead ends: 324 [2025-03-08 15:47:29,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:47:29,551 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:29,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 520 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:47:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2025-03-08 15:47:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2025-03-08 15:47:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-03-08 15:47:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 532 transitions. [2025-03-08 15:47:29,619 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 532 transitions. Word has length 622 [2025-03-08 15:47:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:29,620 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 532 transitions. [2025-03-08 15:47:29,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2025-03-08 15:47:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 532 transitions. [2025-03-08 15:47:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-03-08 15:47:29,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:29,634 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:29,643 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 15:47:29,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 15:47:29,839 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:29,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:29,840 INFO L85 PathProgramCache]: Analyzing trace with hash -123215711, now seen corresponding path program 1 times [2025-03-08 15:47:29,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:29,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345865834] [2025-03-08 15:47:29,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:29,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:29,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-08 15:47:30,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-08 15:47:30,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:30,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-08 15:47:30,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345865834] [2025-03-08 15:47:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345865834] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:30,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:30,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:47:30,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840818407] [2025-03-08 15:47:30,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:30,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:47:30,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:30,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:47:30,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:47:30,335 INFO L87 Difference]: Start difference. First operand 324 states and 532 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-08 15:47:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:30,521 INFO L93 Difference]: Finished difference Result 965 states and 1588 transitions. [2025-03-08 15:47:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:47:30,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-03-08 15:47:30,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:30,531 INFO L225 Difference]: With dead ends: 965 [2025-03-08 15:47:30,532 INFO L226 Difference]: Without dead ends: 644 [2025-03-08 15:47:30,533 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 15:47:30,535 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 517 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:30,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1310 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:47:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2025-03-08 15:47:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2025-03-08 15:47:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 449 states have (on average 1.4966592427616927) internal successors, (672), 449 states have internal predecessors, (672), 190 states have call successors, (190), 2 states have call predecessors, (190), 2 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-08 15:47:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1052 transitions. [2025-03-08 15:47:30,644 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1052 transitions. Word has length 622 [2025-03-08 15:47:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:30,646 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 1052 transitions. [2025-03-08 15:47:30,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-08 15:47:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1052 transitions. [2025-03-08 15:47:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-03-08 15:47:30,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:30,659 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:30,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:47:30,659 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:30,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1289912030, now seen corresponding path program 1 times [2025-03-08 15:47:30,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:30,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103244024] [2025-03-08 15:47:30,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:30,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:30,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-08 15:47:31,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-08 15:47:31,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:31,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-08 15:47:32,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:32,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103244024] [2025-03-08 15:47:32,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103244024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:32,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:32,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:47:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109630473] [2025-03-08 15:47:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:32,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:47:32,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:32,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:47:32,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:47:32,957 INFO L87 Difference]: Start difference. First operand 642 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-08 15:47:33,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:33,133 INFO L93 Difference]: Finished difference Result 1865 states and 3061 transitions. [2025-03-08 15:47:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:47:33,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-03-08 15:47:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:33,147 INFO L225 Difference]: With dead ends: 1865 [2025-03-08 15:47:33,148 INFO L226 Difference]: Without dead ends: 1226 [2025-03-08 15:47:33,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:47:33,153 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 701 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:33,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1241 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:47:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2025-03-08 15:47:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1025. [2025-03-08 15:47:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 826 states have (on average 1.569007263922518) internal successors, (1296), 828 states have internal predecessors, (1296), 194 states have call successors, (194), 4 states have call predecessors, (194), 4 states have return successors, (194), 192 states have call predecessors, (194), 194 states have call successors, (194) [2025-03-08 15:47:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1684 transitions. [2025-03-08 15:47:33,268 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1684 transitions. Word has length 622 [2025-03-08 15:47:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:33,269 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1684 transitions. [2025-03-08 15:47:33,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-08 15:47:33,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1684 transitions. [2025-03-08 15:47:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-03-08 15:47:33,279 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:33,279 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:33,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:47:33,279 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:33,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1700661537, now seen corresponding path program 1 times [2025-03-08 15:47:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671881422] [2025-03-08 15:47:33,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:33,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-08 15:47:34,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-08 15:47:34,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:34,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 9 proven. 273 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-08 15:47:35,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671881422] [2025-03-08 15:47:35,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671881422] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:47:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955258052] [2025-03-08 15:47:35,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:35,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:35,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:35,017 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 15:47:35,018 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 15:47:35,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-08 15:47:35,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-08 15:47:35,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:35,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:35,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 15:47:35,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:47:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11094 proven. 330 refuted. 0 times theorem prover too weak. 6436 trivial. 0 not checked. [2025-03-08 15:47:36,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:47:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 228 proven. 333 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-03-08 15:47:37,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955258052] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:47:37,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:47:37,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 10] total 17 [2025-03-08 15:47:37,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497112565] [2025-03-08 15:47:37,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:47:37,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 15:47:37,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:37,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 15:47:37,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:47:37,509 INFO L87 Difference]: Start difference. First operand 1025 states and 1684 transitions. Second operand has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 6 states have call successors, (264), 3 states have call predecessors, (264), 7 states have return successors, (266), 6 states have call predecessors, (266), 6 states have call successors, (266) [2025-03-08 15:47:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:38,872 INFO L93 Difference]: Finished difference Result 1700 states and 2763 transitions. [2025-03-08 15:47:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 15:47:38,873 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 6 states have call successors, (264), 3 states have call predecessors, (264), 7 states have return successors, (266), 6 states have call predecessors, (266), 6 states have call successors, (266) Word has length 622 [2025-03-08 15:47:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:38,878 INFO L225 Difference]: With dead ends: 1700 [2025-03-08 15:47:38,878 INFO L226 Difference]: Without dead ends: 678 [2025-03-08 15:47:38,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1234 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2025-03-08 15:47:38,881 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 865 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:38,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2182 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 15:47:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2025-03-08 15:47:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 666. [2025-03-08 15:47:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 467 states have (on average 1.4475374732334048) internal successors, (676), 467 states have internal predecessors, (676), 190 states have call successors, (190), 8 states have call predecessors, (190), 8 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-08 15:47:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1056 transitions. [2025-03-08 15:47:38,943 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1056 transitions. Word has length 622 [2025-03-08 15:47:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:38,944 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1056 transitions. [2025-03-08 15:47:38,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 6 states have call successors, (264), 3 states have call predecessors, (264), 7 states have return successors, (266), 6 states have call predecessors, (266), 6 states have call successors, (266) [2025-03-08 15:47:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1056 transitions. [2025-03-08 15:47:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2025-03-08 15:47:38,955 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:38,955 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:38,965 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 15:47:39,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-08 15:47:39,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:39,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1857605012, now seen corresponding path program 1 times [2025-03-08 15:47:39,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:39,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223105689] [2025-03-08 15:47:39,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:39,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 624 statements into 1 equivalence classes. [2025-03-08 15:47:40,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 624 of 624 statements. [2025-03-08 15:47:40,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:40,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 165 proven. 117 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-08 15:47:40,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:40,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223105689] [2025-03-08 15:47:40,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223105689] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:47:40,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930238390] [2025-03-08 15:47:40,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:40,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:40,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:40,744 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 15:47:40,746 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 15:47:40,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 624 statements into 1 equivalence classes. [2025-03-08 15:47:41,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 624 of 624 statements. [2025-03-08 15:47:41,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:41,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:41,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 15:47:41,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:47:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 6562 proven. 60 refuted. 0 times theorem prover too weak. 11238 trivial. 0 not checked. [2025-03-08 15:47:41,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:47:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 60 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-08 15:47:41,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930238390] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:47:41,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:47:41,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-08 15:47:41,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910935912] [2025-03-08 15:47:41,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:47:41,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 15:47:41,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:41,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 15:47:41,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-03-08 15:47:41,991 INFO L87 Difference]: Start difference. First operand 666 states and 1056 transitions. Second operand has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 7 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (156), 7 states have call predecessors, (156), 7 states have call successors, (156) [2025-03-08 15:47:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:43,092 INFO L93 Difference]: Finished difference Result 1369 states and 2143 transitions. [2025-03-08 15:47:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 15:47:43,093 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 7 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (156), 7 states have call predecessors, (156), 7 states have call successors, (156) Word has length 624 [2025-03-08 15:47:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:43,101 INFO L225 Difference]: With dead ends: 1369 [2025-03-08 15:47:43,102 INFO L226 Difference]: Without dead ends: 706 [2025-03-08 15:47:43,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1242 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2025-03-08 15:47:43,105 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 1827 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 1092 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1092 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:43,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 1511 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1092 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 15:47:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2025-03-08 15:47:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 690. [2025-03-08 15:47:43,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 485 states have (on average 1.4061855670103092) internal successors, (682), 485 states have internal predecessors, (682), 190 states have call successors, (190), 14 states have call predecessors, (190), 14 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-08 15:47:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1062 transitions. [2025-03-08 15:47:43,152 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1062 transitions. Word has length 624 [2025-03-08 15:47:43,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:43,153 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1062 transitions. [2025-03-08 15:47:43,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 7 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (156), 7 states have call predecessors, (156), 7 states have call successors, (156) [2025-03-08 15:47:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1062 transitions. [2025-03-08 15:47:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2025-03-08 15:47:43,158 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:43,158 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:43,168 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 15:47:43,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:43,359 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:43,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:43,359 INFO L85 PathProgramCache]: Analyzing trace with hash -711231797, now seen corresponding path program 1 times [2025-03-08 15:47:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:43,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982662815] [2025-03-08 15:47:43,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:43,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:43,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 626 statements into 1 equivalence classes. [2025-03-08 15:47:43,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 626 of 626 statements. [2025-03-08 15:47:43,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:43,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-08 15:47:43,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:43,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982662815] [2025-03-08 15:47:43,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982662815] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:43,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:43,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:47:43,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417532632] [2025-03-08 15:47:43,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:43,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:47:43,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:43,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:47:43,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:47:43,880 INFO L87 Difference]: Start difference. First operand 690 states and 1062 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-08 15:47:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:44,149 INFO L93 Difference]: Finished difference Result 1379 states and 2125 transitions. [2025-03-08 15:47:44,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:47:44,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 626 [2025-03-08 15:47:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:44,154 INFO L225 Difference]: With dead ends: 1379 [2025-03-08 15:47:44,154 INFO L226 Difference]: Without dead ends: 692 [2025-03-08 15:47:44,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:47:44,158 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 329 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:44,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 811 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:47:44,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2025-03-08 15:47:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2025-03-08 15:47:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 487 states have (on average 1.404517453798768) internal successors, (684), 487 states have internal predecessors, (684), 190 states have call successors, (190), 14 states have call predecessors, (190), 14 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-08 15:47:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1064 transitions. [2025-03-08 15:47:44,232 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1064 transitions. Word has length 626 [2025-03-08 15:47:44,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:44,234 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1064 transitions. [2025-03-08 15:47:44,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-08 15:47:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1064 transitions. [2025-03-08 15:47:44,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-03-08 15:47:44,237 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:44,238 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:44,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:47:44,238 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:44,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:44,239 INFO L85 PathProgramCache]: Analyzing trace with hash -309632950, now seen corresponding path program 1 times [2025-03-08 15:47:44,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:44,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146996549] [2025-03-08 15:47:44,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:44,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:44,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-08 15:47:46,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-08 15:47:46,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:46,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 3 proven. 279 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-08 15:47:46,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146996549] [2025-03-08 15:47:46,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146996549] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:47:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106310120] [2025-03-08 15:47:46,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:46,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:46,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:46,600 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 15:47:46,601 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 15:47:46,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-08 15:47:46,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-08 15:47:46,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:46,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:46,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:47:46,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:47:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 468 proven. 279 refuted. 0 times theorem prover too weak. 17113 trivial. 0 not checked. [2025-03-08 15:47:47,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:47:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 3 proven. 279 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-08 15:47:48,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106310120] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:47:48,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:47:48,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-08 15:47:48,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413999102] [2025-03-08 15:47:48,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:47:48,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:47:48,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:48,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:47:48,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:47:48,114 INFO L87 Difference]: Start difference. First operand 692 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2025-03-08 15:47:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:48,483 INFO L93 Difference]: Finished difference Result 1407 states and 2147 transitions. [2025-03-08 15:47:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:47:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) Word has length 627 [2025-03-08 15:47:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:48,491 INFO L225 Difference]: With dead ends: 1407 [2025-03-08 15:47:48,491 INFO L226 Difference]: Without dead ends: 718 [2025-03-08 15:47:48,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1251 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:47:48,494 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 225 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:48,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 990 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:47:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2025-03-08 15:47:48,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 698. [2025-03-08 15:47:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 491 states have (on average 1.3788187372708758) internal successors, (677), 491 states have internal predecessors, (677), 190 states have call successors, (190), 16 states have call predecessors, (190), 16 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-08 15:47:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1057 transitions. [2025-03-08 15:47:48,569 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1057 transitions. Word has length 627 [2025-03-08 15:47:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:48,571 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1057 transitions. [2025-03-08 15:47:48,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2025-03-08 15:47:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1057 transitions. [2025-03-08 15:47:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-03-08 15:47:48,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:48,575 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:48,585 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 15:47:48,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:48,776 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:48,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2059801035, now seen corresponding path program 1 times [2025-03-08 15:47:48,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:48,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010849901] [2025-03-08 15:47:48,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:48,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:48,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-08 15:47:49,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-08 15:47:49,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:49,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 60 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-08 15:47:50,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:50,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010849901] [2025-03-08 15:47:50,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010849901] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:47:50,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933829100] [2025-03-08 15:47:50,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:50,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:50,759 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 15:47:50,761 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 15:47:50,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-08 15:47:51,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-08 15:47:51,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:51,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:51,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 15:47:51,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:47:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11664 proven. 336 refuted. 0 times theorem prover too weak. 5860 trivial. 0 not checked. [2025-03-08 15:47:53,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:47:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 339 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-03-08 15:47:53,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933829100] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:47:53,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:47:53,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-03-08 15:47:53,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143598677] [2025-03-08 15:47:53,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:47:53,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 15:47:53,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:53,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 15:47:53,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2025-03-08 15:47:53,669 INFO L87 Difference]: Start difference. First operand 698 states and 1057 transitions. Second operand has 23 states, 22 states have (on average 18.227272727272727) internal successors, (401), 23 states have internal predecessors, (401), 9 states have call successors, (267), 4 states have call predecessors, (267), 9 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267) [2025-03-08 15:47:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:55,721 INFO L93 Difference]: Finished difference Result 2168 states and 3239 transitions. [2025-03-08 15:47:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-08 15:47:55,722 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 18.227272727272727) internal successors, (401), 23 states have internal predecessors, (401), 9 states have call successors, (267), 4 states have call predecessors, (267), 9 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267) Word has length 627 [2025-03-08 15:47:55,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:55,731 INFO L225 Difference]: With dead ends: 2168 [2025-03-08 15:47:55,731 INFO L226 Difference]: Without dead ends: 1473 [2025-03-08 15:47:55,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1245 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1820, Unknown=0, NotChecked=0, Total=2450 [2025-03-08 15:47:55,734 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 3395 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3413 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:55,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3413 Valid, 2594 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-08 15:47:55,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2025-03-08 15:47:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1417. [2025-03-08 15:47:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 996 states have (on average 1.359437751004016) internal successors, (1354), 996 states have internal predecessors, (1354), 380 states have call successors, (380), 40 states have call predecessors, (380), 40 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-03-08 15:47:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2114 transitions. [2025-03-08 15:47:55,906 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2114 transitions. Word has length 627 [2025-03-08 15:47:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:55,907 INFO L471 AbstractCegarLoop]: Abstraction has 1417 states and 2114 transitions. [2025-03-08 15:47:55,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 18.227272727272727) internal successors, (401), 23 states have internal predecessors, (401), 9 states have call successors, (267), 4 states have call predecessors, (267), 9 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267) [2025-03-08 15:47:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2114 transitions. [2025-03-08 15:47:55,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-03-08 15:47:55,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:55,917 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:55,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 15:47:56,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:56,118 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:56,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash 266863373, now seen corresponding path program 1 times [2025-03-08 15:47:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:56,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551987672] [2025-03-08 15:47:56,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:56,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:56,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-08 15:47:56,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-08 15:47:56,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:56,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 165 proven. 117 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-08 15:47:57,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551987672] [2025-03-08 15:47:57,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551987672] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:47:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488082919] [2025-03-08 15:47:57,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:57,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:57,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:57,706 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 15:47:57,707 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 15:47:57,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-08 15:47:58,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-08 15:47:58,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:58,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:58,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 15:47:58,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:48:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11708 proven. 444 refuted. 0 times theorem prover too weak. 5708 trivial. 0 not checked. [2025-03-08 15:48:00,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:48:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 330 proven. 231 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-03-08 15:48:00,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488082919] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:48:00,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:48:00,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 9] total 25 [2025-03-08 15:48:00,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381578390] [2025-03-08 15:48:00,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:48:00,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 15:48:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:48:00,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 15:48:00,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2025-03-08 15:48:00,939 INFO L87 Difference]: Start difference. First operand 1417 states and 2114 transitions. Second operand has 25 states, 24 states have (on average 15.166666666666666) internal successors, (364), 23 states have internal predecessors, (364), 11 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 11 states have call successors, (267) [2025-03-08 15:48:02,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:48:02,318 INFO L93 Difference]: Finished difference Result 2895 states and 4285 transitions. [2025-03-08 15:48:02,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 15:48:02,320 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 15.166666666666666) internal successors, (364), 23 states have internal predecessors, (364), 11 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 11 states have call successors, (267) Word has length 627 [2025-03-08 15:48:02,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:48:02,328 INFO L225 Difference]: With dead ends: 2895 [2025-03-08 15:48:02,329 INFO L226 Difference]: Without dead ends: 1481 [2025-03-08 15:48:02,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1242 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=518, Invalid=1374, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 15:48:02,333 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 1895 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 15:48:02,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 1813 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 15:48:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2025-03-08 15:48:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1433. [2025-03-08 15:48:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1008 states have (on average 1.3472222222222223) internal successors, (1358), 1008 states have internal predecessors, (1358), 380 states have call successors, (380), 44 states have call predecessors, (380), 44 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-03-08 15:48:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2118 transitions. [2025-03-08 15:48:02,462 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2118 transitions. Word has length 627 [2025-03-08 15:48:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:48:02,462 INFO L471 AbstractCegarLoop]: Abstraction has 1433 states and 2118 transitions. [2025-03-08 15:48:02,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 15.166666666666666) internal successors, (364), 23 states have internal predecessors, (364), 11 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 11 states have call successors, (267) [2025-03-08 15:48:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2118 transitions. [2025-03-08 15:48:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2025-03-08 15:48:02,467 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:48:02,467 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:02,476 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 15:48:02,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:48:02,668 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:48:02,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:48:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash 310034859, now seen corresponding path program 1 times [2025-03-08 15:48:02,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:48:02,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610124135] [2025-03-08 15:48:02,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:02,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:48:02,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-03-08 15:48:03,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-03-08 15:48:03,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:03,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 186 proven. 372 refuted. 0 times theorem prover too weak. 17302 trivial. 0 not checked. [2025-03-08 15:48:13,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:48:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610124135] [2025-03-08 15:48:13,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610124135] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:48:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302768302] [2025-03-08 15:48:13,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:13,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:48:13,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:48:13,778 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 15:48:13,778 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 15:48:13,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-03-08 15:48:14,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-03-08 15:48:14,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:14,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:14,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 15:48:14,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:48:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11525 proven. 435 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2025-03-08 15:48:16,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:48:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 177 proven. 384 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-03-08 15:48:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302768302] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:48:18,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:48:18,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 37 [2025-03-08 15:48:18,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419903118] [2025-03-08 15:48:18,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:48:18,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 15:48:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:48:18,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 15:48:18,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 15:48:18,969 INFO L87 Difference]: Start difference. First operand 1433 states and 2118 transitions. Second operand has 37 states, 37 states have (on average 11.45945945945946) internal successors, (424), 37 states have internal predecessors, (424), 10 states have call successors, (285), 5 states have call predecessors, (285), 11 states have return successors, (285), 10 states have call predecessors, (285), 10 states have call successors, (285) [2025-03-08 15:48:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:48:42,228 INFO L93 Difference]: Finished difference Result 13285 states and 18941 transitions. [2025-03-08 15:48:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2025-03-08 15:48:42,229 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 11.45945945945946) internal successors, (424), 37 states have internal predecessors, (424), 10 states have call successors, (285), 5 states have call predecessors, (285), 11 states have return successors, (285), 10 states have call predecessors, (285), 10 states have call successors, (285) Word has length 628 [2025-03-08 15:48:42,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:48:42,285 INFO L225 Difference]: With dead ends: 13285 [2025-03-08 15:48:42,285 INFO L226 Difference]: Without dead ends: 11855 [2025-03-08 15:48:42,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1519 GetRequests, 1286 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21655 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=8437, Invalid=46553, Unknown=0, NotChecked=0, Total=54990 [2025-03-08 15:48:42,306 INFO L435 NwaCegarLoop]: 753 mSDtfsCounter, 8320 mSDsluCounter, 11157 mSDsCounter, 0 mSdLazyCounter, 15079 mSolverCounterSat, 4658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8352 SdHoareTripleChecker+Valid, 11910 SdHoareTripleChecker+Invalid, 19737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4658 IncrementalHoareTripleChecker+Valid, 15079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2025-03-08 15:48:42,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8352 Valid, 11910 Invalid, 19737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4658 Valid, 15079 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2025-03-08 15:48:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11855 states. [2025-03-08 15:48:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11855 to 7395. [2025-03-08 15:48:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7395 states, 5588 states have (on average 1.3793843951324267) internal successors, (7708), 5598 states have internal predecessors, (7708), 1542 states have call successors, (1542), 264 states have call predecessors, (1542), 264 states have return successors, (1542), 1532 states have call predecessors, (1542), 1542 states have call successors, (1542) [2025-03-08 15:48:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7395 states to 7395 states and 10792 transitions. [2025-03-08 15:48:43,301 INFO L78 Accepts]: Start accepts. Automaton has 7395 states and 10792 transitions. Word has length 628 [2025-03-08 15:48:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:48:43,304 INFO L471 AbstractCegarLoop]: Abstraction has 7395 states and 10792 transitions. [2025-03-08 15:48:43,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 11.45945945945946) internal successors, (424), 37 states have internal predecessors, (424), 10 states have call successors, (285), 5 states have call predecessors, (285), 11 states have return successors, (285), 10 states have call predecessors, (285), 10 states have call successors, (285) [2025-03-08 15:48:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 7395 states and 10792 transitions. [2025-03-08 15:48:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2025-03-08 15:48:43,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:48:43,315 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:43,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0