./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0da4165c1f344d998809ceeb47027662b23941f97888207fb29d10aaeaac6d44 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 17:38:06,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 17:38:06,898 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 17:38:06,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 17:38:06,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 17:38:06,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 17:38:06,937 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 17:38:06,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 17:38:06,942 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 17:38:06,942 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 17:38:06,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 17:38:06,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 17:38:06,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 17:38:06,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 17:38:06,943 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 17:38:06,944 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:38:06,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 17:38:06,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 17:38:06,944 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-jdk21/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 -> 0da4165c1f344d998809ceeb47027662b23941f97888207fb29d10aaeaac6d44 [2025-02-05 17:38:07,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 17:38:07,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 17:38:07,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 17:38:07,150 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 17:38:07,150 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 17:38:07,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c [2025-02-05 17:38:08,287 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b554269d0/f6543c437cf245639f15d64181768fbd/FLAGf360cb4f2 [2025-02-05 17:38:08,805 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 17:38:08,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c [2025-02-05 17:38:08,832 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b554269d0/f6543c437cf245639f15d64181768fbd/FLAGf360cb4f2 [2025-02-05 17:38:08,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b554269d0/f6543c437cf245639f15d64181768fbd [2025-02-05 17:38:08,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 17:38:08,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 17:38:08,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 17:38:08,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 17:38:08,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 17:38:08,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:38:08" (1/1) ... [2025-02-05 17:38:08,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ade09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:08, skipping insertion in model container [2025-02-05 17:38:08,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:38:08" (1/1) ... [2025-02-05 17:38:08,982 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 17:38:09,255 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c[8616,8629] [2025-02-05 17:38:09,281 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c[12123,12136] [2025-02-05 17:38:09,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:38:09,711 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 17:38:09,743 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c[8616,8629] [2025-02-05 17:38:09,751 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c[12123,12136] [2025-02-05 17:38:10,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:38:10,056 INFO L204 MainTranslator]: Completed translation [2025-02-05 17:38:10,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10 WrapperNode [2025-02-05 17:38:10,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 17:38:10,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 17:38:10,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 17:38:10,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 17:38:10,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,331 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5033 [2025-02-05 17:38:10,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 17:38:10,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 17:38:10,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 17:38:10,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 17:38:10,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,539 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]. [2025-02-05 17:38:10,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,540 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,740 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 17:38:10,834 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 17:38:10,834 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 17:38:10,834 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 17:38:10,835 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (1/1) ... [2025-02-05 17:38:10,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:38:10,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:38:10,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 17:38:10,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 17:38:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 17:38:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 17:38:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 17:38:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 17:38:10,949 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 17:38:10,950 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 17:38:14,582 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L5020: havoc calculate_output3_#t~ret36#1; [2025-02-05 17:38:14,583 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2051: havoc calculate_output_#t~ret34#1; [2025-02-05 17:38:14,583 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3530: havoc calculate_output2_#t~ret35#1; [2025-02-05 17:38:14,744 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2025-02-05 17:38:14,744 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 17:38:14,762 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 17:38:14,762 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 17:38:14,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:38:14 BoogieIcfgContainer [2025-02-05 17:38:14,763 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 17:38:14,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 17:38:14,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 17:38:14,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 17:38:14,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 05:38:08" (1/3) ... [2025-02-05 17:38:14,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fe7b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:38:14, skipping insertion in model container [2025-02-05 17:38:14,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:38:10" (2/3) ... [2025-02-05 17:38:14,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fe7b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:38:14, skipping insertion in model container [2025-02-05 17:38:14,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:38:14" (3/3) ... [2025-02-05 17:38:14,769 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c [2025-02-05 17:38:14,778 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 17:38:14,781 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c that has 1 procedures, 884 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-05 17:38:14,851 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 17:38:14,859 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;@6f385d9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 17:38:14,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 17:38:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 884 states, 881 states have (on average 1.9046538024971622) internal successors, (1678), 883 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 17:38:14,869 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:14,869 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:14,870 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:14,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1657989458, now seen corresponding path program 1 times [2025-02-05 17:38:14,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:14,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411922754] [2025-02-05 17:38:14,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:14,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:14,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 17:38:14,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 17:38:14,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:14,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411922754] [2025-02-05 17:38:15,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411922754] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:15,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:15,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 17:38:15,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541916872] [2025-02-05 17:38:15,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:15,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 17:38:15,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:15,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 17:38:15,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 17:38:15,076 INFO L87 Difference]: Start difference. First operand has 884 states, 881 states have (on average 1.9046538024971622) internal successors, (1678), 883 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:15,153 INFO L93 Difference]: Finished difference Result 1739 states and 3302 transitions. [2025-02-05 17:38:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 17:38:15,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-05 17:38:15,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:15,173 INFO L225 Difference]: With dead ends: 1739 [2025-02-05 17:38:15,174 INFO L226 Difference]: Without dead ends: 819 [2025-02-05 17:38:15,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 17:38:15,183 INFO L435 NwaCegarLoop]: 1614 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:15,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:15,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2025-02-05 17:38:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2025-02-05 17:38:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.894736842105263) internal successors, (1548), 818 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2025-02-05 17:38:15,265 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2025-02-05 17:38:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:15,266 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2025-02-05 17:38:15,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2025-02-05 17:38:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 17:38:15,267 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:15,267 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:15,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 17:38:15,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:15,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:15,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1147455281, now seen corresponding path program 1 times [2025-02-05 17:38:15,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:15,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249318614] [2025-02-05 17:38:15,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:15,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:15,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 17:38:15,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 17:38:15,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:15,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249318614] [2025-02-05 17:38:15,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249318614] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:15,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:15,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:38:15,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164804029] [2025-02-05 17:38:15,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:15,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:38:15,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:15,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:38:15,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:38:15,515 INFO L87 Difference]: Start difference. First operand 819 states and 1548 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:15,640 INFO L93 Difference]: Finished difference Result 895 states and 1666 transitions. [2025-02-05 17:38:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 17:38:15,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-05 17:38:15,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:15,653 INFO L225 Difference]: With dead ends: 895 [2025-02-05 17:38:15,653 INFO L226 Difference]: Without dead ends: 855 [2025-02-05 17:38:15,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:38:15,655 INFO L435 NwaCegarLoop]: 1544 mSDtfsCounter, 56 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:15,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6147 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:38:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2025-02-05 17:38:15,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 819. [2025-02-05 17:38:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.8665850673194615) internal successors, (1525), 818 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2025-02-05 17:38:15,698 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2025-02-05 17:38:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:15,698 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2025-02-05 17:38:15,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2025-02-05 17:38:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-05 17:38:15,702 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:15,703 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:15,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 17:38:15,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:15,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1879113303, now seen corresponding path program 1 times [2025-02-05 17:38:15,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:15,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800154899] [2025-02-05 17:38:15,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:15,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:15,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-05 17:38:15,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 17:38:15,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:15,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:15,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:15,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800154899] [2025-02-05 17:38:15,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800154899] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:15,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:15,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 17:38:15,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840702876] [2025-02-05 17:38:15,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:15,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:15,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:15,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:15,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:15,806 INFO L87 Difference]: Start difference. First operand 819 states and 1525 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:18,724 INFO L93 Difference]: Finished difference Result 2323 states and 4398 transitions. [2025-02-05 17:38:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-05 17:38:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:18,734 INFO L225 Difference]: With dead ends: 2323 [2025-02-05 17:38:18,735 INFO L226 Difference]: Without dead ends: 1570 [2025-02-05 17:38:18,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:18,738 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 874 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:18,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 514 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-05 17:38:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2025-02-05 17:38:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1570. [2025-02-05 17:38:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1568 states have (on average 1.6275510204081634) internal successors, (2552), 1569 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:18,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2552 transitions. [2025-02-05 17:38:18,793 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2552 transitions. Word has length 30 [2025-02-05 17:38:18,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:18,793 INFO L471 AbstractCegarLoop]: Abstraction has 1570 states and 2552 transitions. [2025-02-05 17:38:18,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:18,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2552 transitions. [2025-02-05 17:38:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-05 17:38:18,796 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:18,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:18,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 17:38:18,797 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:18,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1619243067, now seen corresponding path program 1 times [2025-02-05 17:38:18,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:18,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659465265] [2025-02-05 17:38:18,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:18,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-05 17:38:18,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 17:38:18,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:18,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:18,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:18,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659465265] [2025-02-05 17:38:18,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659465265] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:18,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:38:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314820560] [2025-02-05 17:38:18,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:18,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:38:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:18,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:38:18,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:38:18,963 INFO L87 Difference]: Start difference. First operand 1570 states and 2552 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:19,095 INFO L93 Difference]: Finished difference Result 1858 states and 3008 transitions. [2025-02-05 17:38:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:38:19,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-02-05 17:38:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:19,101 INFO L225 Difference]: With dead ends: 1858 [2025-02-05 17:38:19,101 INFO L226 Difference]: Without dead ends: 1822 [2025-02-05 17:38:19,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-02-05 17:38:19,102 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 6217 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6217 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:19,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6217 Valid, 2309 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:38:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2025-02-05 17:38:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1604. [2025-02-05 17:38:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1602 states have (on average 1.626716604244694) internal successors, (2606), 1603 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2606 transitions. [2025-02-05 17:38:19,128 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2606 transitions. Word has length 44 [2025-02-05 17:38:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:19,128 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2606 transitions. [2025-02-05 17:38:19,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2606 transitions. [2025-02-05 17:38:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-05 17:38:19,129 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:19,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:19,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 17:38:19,130 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:19,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1860187818, now seen corresponding path program 1 times [2025-02-05 17:38:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960903378] [2025-02-05 17:38:19,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:19,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-05 17:38:19,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 17:38:19,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:19,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:19,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960903378] [2025-02-05 17:38:19,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960903378] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:19,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:19,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:38:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035611142] [2025-02-05 17:38:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:19,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:19,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:19,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:19,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:19,185 INFO L87 Difference]: Start difference. First operand 1604 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:19,219 INFO L93 Difference]: Finished difference Result 1733 states and 2809 transitions. [2025-02-05 17:38:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:19,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-02-05 17:38:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:19,224 INFO L225 Difference]: With dead ends: 1733 [2025-02-05 17:38:19,224 INFO L226 Difference]: Without dead ends: 1663 [2025-02-05 17:38:19,225 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 [2025-02-05 17:38:19,225 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:19,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1575 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:19,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2025-02-05 17:38:19,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2025-02-05 17:38:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.623869801084991) internal successors, (2694), 1660 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2694 transitions. [2025-02-05 17:38:19,249 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2694 transitions. Word has length 46 [2025-02-05 17:38:19,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:19,250 INFO L471 AbstractCegarLoop]: Abstraction has 1661 states and 2694 transitions. [2025-02-05 17:38:19,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2694 transitions. [2025-02-05 17:38:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-05 17:38:19,251 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:19,251 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:19,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 17:38:19,251 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:19,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1827864583, now seen corresponding path program 1 times [2025-02-05 17:38:19,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:19,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423001676] [2025-02-05 17:38:19,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:19,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:19,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-05 17:38:19,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 17:38:19,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:19,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:19,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:19,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423001676] [2025-02-05 17:38:19,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423001676] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:19,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:19,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:38:19,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514272784] [2025-02-05 17:38:19,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:19,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:38:19,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:19,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:38:19,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:38:19,564 INFO L87 Difference]: Start difference. First operand 1661 states and 2694 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:19,701 INFO L93 Difference]: Finished difference Result 1790 states and 2894 transitions. [2025-02-05 17:38:19,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 17:38:19,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-02-05 17:38:19,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:19,711 INFO L225 Difference]: With dead ends: 1790 [2025-02-05 17:38:19,711 INFO L226 Difference]: Without dead ends: 1663 [2025-02-05 17:38:19,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-02-05 17:38:19,716 INFO L435 NwaCegarLoop]: 1519 mSDtfsCounter, 4446 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:19,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4446 Valid, 1678 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:38:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2025-02-05 17:38:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2025-02-05 17:38:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.622664255575648) internal successors, (2692), 1660 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2692 transitions. [2025-02-05 17:38:19,775 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2692 transitions. Word has length 46 [2025-02-05 17:38:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:19,775 INFO L471 AbstractCegarLoop]: Abstraction has 1661 states and 2692 transitions. [2025-02-05 17:38:19,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2692 transitions. [2025-02-05 17:38:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-05 17:38:19,776 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:19,776 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:19,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 17:38:19,776 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:19,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:19,776 INFO L85 PathProgramCache]: Analyzing trace with hash -798689491, now seen corresponding path program 1 times [2025-02-05 17:38:19,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:19,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437236910] [2025-02-05 17:38:19,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:19,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:19,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-05 17:38:19,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 17:38:19,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:19,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437236910] [2025-02-05 17:38:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437236910] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:19,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:19,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:38:19,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695351791] [2025-02-05 17:38:19,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:19,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:38:19,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:19,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:38:19,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:38:19,964 INFO L87 Difference]: Start difference. First operand 1661 states and 2692 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:19,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:19,992 INFO L93 Difference]: Finished difference Result 1669 states and 2701 transitions. [2025-02-05 17:38:19,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 17:38:19,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-02-05 17:38:19,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:19,998 INFO L225 Difference]: With dead ends: 1669 [2025-02-05 17:38:19,998 INFO L226 Difference]: Without dead ends: 1667 [2025-02-05 17:38:19,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:38:19,999 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:19,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:20,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2025-02-05 17:38:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1667. [2025-02-05 17:38:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1665 states have (on average 1.61981981981982) internal successors, (2697), 1666 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2697 transitions. [2025-02-05 17:38:20,024 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2697 transitions. Word has length 47 [2025-02-05 17:38:20,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:20,024 INFO L471 AbstractCegarLoop]: Abstraction has 1667 states and 2697 transitions. [2025-02-05 17:38:20,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2697 transitions. [2025-02-05 17:38:20,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-05 17:38:20,025 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:20,025 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:20,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 17:38:20,025 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:20,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:20,026 INFO L85 PathProgramCache]: Analyzing trace with hash -583055145, now seen corresponding path program 1 times [2025-02-05 17:38:20,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:20,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993293311] [2025-02-05 17:38:20,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:20,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:20,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-05 17:38:20,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 17:38:20,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:20,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993293311] [2025-02-05 17:38:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993293311] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:20,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:38:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145989042] [2025-02-05 17:38:20,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:20,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:20,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:20,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:20,075 INFO L87 Difference]: Start difference. First operand 1667 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:20,097 INFO L93 Difference]: Finished difference Result 1813 states and 2918 transitions. [2025-02-05 17:38:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:20,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-02-05 17:38:20,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:20,105 INFO L225 Difference]: With dead ends: 1813 [2025-02-05 17:38:20,105 INFO L226 Difference]: Without dead ends: 1737 [2025-02-05 17:38:20,106 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 [2025-02-05 17:38:20,106 INFO L435 NwaCegarLoop]: 1567 mSDtfsCounter, 1486 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:20,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2025-02-05 17:38:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2025-02-05 17:38:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.6145412579342182) internal successors, (2798), 1734 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2798 transitions. [2025-02-05 17:38:20,141 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2798 transitions. Word has length 48 [2025-02-05 17:38:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:20,143 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 2798 transitions. [2025-02-05 17:38:20,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2798 transitions. [2025-02-05 17:38:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-05 17:38:20,143 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:20,143 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:20,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 17:38:20,145 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:20,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:20,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1031000681, now seen corresponding path program 1 times [2025-02-05 17:38:20,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:20,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577527284] [2025-02-05 17:38:20,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:20,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:20,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-05 17:38:20,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 17:38:20,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:20,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:20,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:20,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577527284] [2025-02-05 17:38:20,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577527284] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:20,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:20,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:38:20,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360991582] [2025-02-05 17:38:20,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:20,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:20,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:20,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:20,205 INFO L87 Difference]: Start difference. First operand 1735 states and 2798 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:20,226 INFO L93 Difference]: Finished difference Result 2109 states and 3358 transitions. [2025-02-05 17:38:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:20,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-02-05 17:38:20,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:20,233 INFO L225 Difference]: With dead ends: 2109 [2025-02-05 17:38:20,233 INFO L226 Difference]: Without dead ends: 1910 [2025-02-05 17:38:20,236 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 [2025-02-05 17:38:20,237 INFO L435 NwaCegarLoop]: 1569 mSDtfsCounter, 1484 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:20,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:20,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2025-02-05 17:38:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1908. [2025-02-05 17:38:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1906 states have (on average 1.6002098635886675) internal successors, (3050), 1907 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 3050 transitions. [2025-02-05 17:38:20,268 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 3050 transitions. Word has length 48 [2025-02-05 17:38:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:20,269 INFO L471 AbstractCegarLoop]: Abstraction has 1908 states and 3050 transitions. [2025-02-05 17:38:20,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 3050 transitions. [2025-02-05 17:38:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-05 17:38:20,270 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:20,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:20,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 17:38:20,270 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:20,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash -615824809, now seen corresponding path program 1 times [2025-02-05 17:38:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:20,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247820712] [2025-02-05 17:38:20,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:20,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:20,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-05 17:38:20,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 17:38:20,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:20,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247820712] [2025-02-05 17:38:20,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247820712] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:20,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:20,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:38:20,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50790217] [2025-02-05 17:38:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:20,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:20,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:20,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:20,321 INFO L87 Difference]: Start difference. First operand 1908 states and 3050 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:20,344 INFO L93 Difference]: Finished difference Result 2604 states and 4072 transitions. [2025-02-05 17:38:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:20,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-02-05 17:38:20,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:20,351 INFO L225 Difference]: With dead ends: 2604 [2025-02-05 17:38:20,351 INFO L226 Difference]: Without dead ends: 2232 [2025-02-05 17:38:20,352 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 [2025-02-05 17:38:20,352 INFO L435 NwaCegarLoop]: 1567 mSDtfsCounter, 1482 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:20,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2025-02-05 17:38:20,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2230. [2025-02-05 17:38:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 2228 states have (on average 1.573608617594255) internal successors, (3506), 2229 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3506 transitions. [2025-02-05 17:38:20,389 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3506 transitions. Word has length 48 [2025-02-05 17:38:20,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:20,389 INFO L471 AbstractCegarLoop]: Abstraction has 2230 states and 3506 transitions. [2025-02-05 17:38:20,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3506 transitions. [2025-02-05 17:38:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-05 17:38:20,390 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:20,390 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:20,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-05 17:38:20,390 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:20,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1102543081, now seen corresponding path program 1 times [2025-02-05 17:38:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635208133] [2025-02-05 17:38:20,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:20,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:20,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-05 17:38:20,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 17:38:20,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:20,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:20,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:20,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635208133] [2025-02-05 17:38:20,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635208133] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:20,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:20,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:38:20,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971715669] [2025-02-05 17:38:20,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:20,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:20,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:20,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:20,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:20,437 INFO L87 Difference]: Start difference. First operand 2230 states and 3506 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:20,468 INFO L93 Difference]: Finished difference Result 3522 states and 5356 transitions. [2025-02-05 17:38:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-02-05 17:38:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:20,478 INFO L225 Difference]: With dead ends: 3522 [2025-02-05 17:38:20,478 INFO L226 Difference]: Without dead ends: 2828 [2025-02-05 17:38:20,479 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 [2025-02-05 17:38:20,480 INFO L435 NwaCegarLoop]: 1565 mSDtfsCounter, 1480 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:20,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1635 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2025-02-05 17:38:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2826. [2025-02-05 17:38:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2824 states have (on average 1.5304532577903682) internal successors, (4322), 2825 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4322 transitions. [2025-02-05 17:38:20,580 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4322 transitions. Word has length 48 [2025-02-05 17:38:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:20,581 INFO L471 AbstractCegarLoop]: Abstraction has 2826 states and 4322 transitions. [2025-02-05 17:38:20,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4322 transitions. [2025-02-05 17:38:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-05 17:38:20,582 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:20,582 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:20,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-05 17:38:20,582 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:20,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:20,583 INFO L85 PathProgramCache]: Analyzing trace with hash -492453955, now seen corresponding path program 1 times [2025-02-05 17:38:20,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:20,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944725830] [2025-02-05 17:38:20,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:20,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-05 17:38:20,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 17:38:20,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:20,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 17:38:20,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:20,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944725830] [2025-02-05 17:38:20,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944725830] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:20,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:20,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:38:20,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859177392] [2025-02-05 17:38:20,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:20,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:38:20,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:20,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:38:20,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:38:20,713 INFO L87 Difference]: Start difference. First operand 2826 states and 4322 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:20,852 INFO L93 Difference]: Finished difference Result 7916 states and 11511 transitions. [2025-02-05 17:38:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 17:38:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-02-05 17:38:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:20,878 INFO L225 Difference]: With dead ends: 7916 [2025-02-05 17:38:20,878 INFO L226 Difference]: Without dead ends: 6986 [2025-02-05 17:38:20,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:38:20,882 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 4645 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:20,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4645 Valid, 3389 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:38:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2025-02-05 17:38:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 3938. [2025-02-05 17:38:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3936 states have (on average 1.4923780487804879) internal successors, (5874), 3937 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 5874 transitions. [2025-02-05 17:38:20,975 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 5874 transitions. Word has length 65 [2025-02-05 17:38:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:20,975 INFO L471 AbstractCegarLoop]: Abstraction has 3938 states and 5874 transitions. [2025-02-05 17:38:20,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:20,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 5874 transitions. [2025-02-05 17:38:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-05 17:38:20,979 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:20,980 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:20,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-05 17:38:20,980 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:20,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash -940399491, now seen corresponding path program 1 times [2025-02-05 17:38:20,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:20,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890917402] [2025-02-05 17:38:20,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:20,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-05 17:38:20,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 17:38:20,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:20,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 17:38:21,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:21,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890917402] [2025-02-05 17:38:21,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890917402] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:21,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:21,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:38:21,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645639772] [2025-02-05 17:38:21,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:21,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:38:21,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:21,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:38:21,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:38:21,079 INFO L87 Difference]: Start difference. First operand 3938 states and 5874 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:21,221 INFO L93 Difference]: Finished difference Result 9204 states and 13319 transitions. [2025-02-05 17:38:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 17:38:21,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-02-05 17:38:21,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:21,246 INFO L225 Difference]: With dead ends: 9204 [2025-02-05 17:38:21,246 INFO L226 Difference]: Without dead ends: 7914 [2025-02-05 17:38:21,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:38:21,250 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 4647 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:21,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 3366 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2025-02-05 17:38:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 5690. [2025-02-05 17:38:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5688 states have (on average 1.461673699015471) internal successors, (8314), 5689 states have internal predecessors, (8314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:21,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 8314 transitions. [2025-02-05 17:38:21,444 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 8314 transitions. Word has length 65 [2025-02-05 17:38:21,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:21,444 INFO L471 AbstractCegarLoop]: Abstraction has 5690 states and 8314 transitions. [2025-02-05 17:38:21,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:21,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 8314 transitions. [2025-02-05 17:38:21,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-05 17:38:21,448 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:21,448 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:21,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-05 17:38:21,448 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:21,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash -525223619, now seen corresponding path program 1 times [2025-02-05 17:38:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357099813] [2025-02-05 17:38:21,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:21,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-05 17:38:21,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 17:38:21,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:21,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 17:38:21,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:21,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357099813] [2025-02-05 17:38:21,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357099813] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:21,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:21,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:38:21,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421433835] [2025-02-05 17:38:21,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:21,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:38:21,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:21,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:38:21,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:38:21,560 INFO L87 Difference]: Start difference. First operand 5690 states and 8314 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:21,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:21,859 INFO L93 Difference]: Finished difference Result 10492 states and 15119 transitions. [2025-02-05 17:38:21,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 17:38:21,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-02-05 17:38:21,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:21,876 INFO L225 Difference]: With dead ends: 10492 [2025-02-05 17:38:21,876 INFO L226 Difference]: Without dead ends: 9202 [2025-02-05 17:38:21,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:38:21,883 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 4669 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:21,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 3349 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:38:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9202 states. [2025-02-05 17:38:22,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9202 to 6978. [2025-02-05 17:38:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6978 states, 6976 states have (on average 1.4498279816513762) internal successors, (10114), 6977 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 10114 transitions. [2025-02-05 17:38:22,111 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 10114 transitions. Word has length 65 [2025-02-05 17:38:22,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:22,111 INFO L471 AbstractCegarLoop]: Abstraction has 6978 states and 10114 transitions. [2025-02-05 17:38:22,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 10114 transitions. [2025-02-05 17:38:22,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-05 17:38:22,115 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:22,118 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:22,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-05 17:38:22,119 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:22,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:22,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1011941891, now seen corresponding path program 1 times [2025-02-05 17:38:22,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:22,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053172686] [2025-02-05 17:38:22,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:22,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:22,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-05 17:38:22,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 17:38:22,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:22,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 17:38:22,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:22,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053172686] [2025-02-05 17:38:22,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053172686] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:22,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:22,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:38:22,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889303565] [2025-02-05 17:38:22,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:22,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:38:22,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:22,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:38:22,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:38:22,300 INFO L87 Difference]: Start difference. First operand 6978 states and 10114 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:22,513 INFO L93 Difference]: Finished difference Result 11780 states and 16919 transitions. [2025-02-05 17:38:22,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 17:38:22,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-02-05 17:38:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:22,534 INFO L225 Difference]: With dead ends: 11780 [2025-02-05 17:38:22,535 INFO L226 Difference]: Without dead ends: 10490 [2025-02-05 17:38:22,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:38:22,541 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 4661 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4661 SdHoareTripleChecker+Valid, 3359 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:22,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4661 Valid, 3359 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:38:22,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10490 states. [2025-02-05 17:38:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10490 to 8266. [2025-02-05 17:38:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.441674733785092) internal successors, (11914), 8265 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11914 transitions. [2025-02-05 17:38:22,830 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11914 transitions. Word has length 65 [2025-02-05 17:38:22,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:22,830 INFO L471 AbstractCegarLoop]: Abstraction has 8266 states and 11914 transitions. [2025-02-05 17:38:22,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11914 transitions. [2025-02-05 17:38:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-05 17:38:22,832 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:22,832 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:22,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-05 17:38:22,832 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:22,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 78192369, now seen corresponding path program 1 times [2025-02-05 17:38:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:22,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178478152] [2025-02-05 17:38:22,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:22,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:22,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-05 17:38:22,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-05 17:38:22,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:22,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178478152] [2025-02-05 17:38:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178478152] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:22,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:22,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:38:22,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951712093] [2025-02-05 17:38:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:22,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:22,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:22,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:22,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:22,930 INFO L87 Difference]: Start difference. First operand 8266 states and 11914 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:23,067 INFO L93 Difference]: Finished difference Result 14998 states and 21332 transitions. [2025-02-05 17:38:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:23,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-02-05 17:38:23,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:23,083 INFO L225 Difference]: With dead ends: 14998 [2025-02-05 17:38:23,084 INFO L226 Difference]: Without dead ends: 8268 [2025-02-05 17:38:23,092 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 [2025-02-05 17:38:23,093 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 37 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:23,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2025-02-05 17:38:23,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 8266. [2025-02-05 17:38:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.4266698935140367) internal successors, (11790), 8265 states have internal predecessors, (11790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11790 transitions. [2025-02-05 17:38:23,242 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11790 transitions. Word has length 66 [2025-02-05 17:38:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:23,242 INFO L471 AbstractCegarLoop]: Abstraction has 8266 states and 11790 transitions. [2025-02-05 17:38:23,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11790 transitions. [2025-02-05 17:38:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-05 17:38:23,244 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:23,244 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:23,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-05 17:38:23,244 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:23,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash -628102213, now seen corresponding path program 1 times [2025-02-05 17:38:23,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:23,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223380628] [2025-02-05 17:38:23,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:23,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-05 17:38:23,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-05 17:38:23,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:23,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:23,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:23,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223380628] [2025-02-05 17:38:23,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223380628] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:23,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:23,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:38:23,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713279600] [2025-02-05 17:38:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:23,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:23,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:23,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:23,368 INFO L87 Difference]: Start difference. First operand 8266 states and 11790 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:23,438 INFO L93 Difference]: Finished difference Result 10839 states and 15374 transitions. [2025-02-05 17:38:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:23,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-05 17:38:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:23,447 INFO L225 Difference]: With dead ends: 10839 [2025-02-05 17:38:23,447 INFO L226 Difference]: Without dead ends: 4109 [2025-02-05 17:38:23,454 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 [2025-02-05 17:38:23,455 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 31 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:23,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3061 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2025-02-05 17:38:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4101. [2025-02-05 17:38:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4099 states have (on average 1.4708465479385215) internal successors, (6029), 4100 states have internal predecessors, (6029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6029 transitions. [2025-02-05 17:38:23,528 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6029 transitions. Word has length 67 [2025-02-05 17:38:23,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:23,528 INFO L471 AbstractCegarLoop]: Abstraction has 4101 states and 6029 transitions. [2025-02-05 17:38:23,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6029 transitions. [2025-02-05 17:38:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 17:38:23,529 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:23,529 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:23,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-05 17:38:23,530 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:23,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:23,530 INFO L85 PathProgramCache]: Analyzing trace with hash 667894008, now seen corresponding path program 1 times [2025-02-05 17:38:23,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:23,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241600293] [2025-02-05 17:38:23,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:23,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:23,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 17:38:23,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 17:38:23,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:23,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:23,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:23,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241600293] [2025-02-05 17:38:23,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241600293] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:23,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:23,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:38:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304441527] [2025-02-05 17:38:23,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:23,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:23,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:23,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:23,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:23,620 INFO L87 Difference]: Start difference. First operand 4101 states and 6029 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:23,646 INFO L93 Difference]: Finished difference Result 5381 states and 7791 transitions. [2025-02-05 17:38:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-02-05 17:38:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:23,651 INFO L225 Difference]: With dead ends: 5381 [2025-02-05 17:38:23,651 INFO L226 Difference]: Without dead ends: 2827 [2025-02-05 17:38:23,653 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 [2025-02-05 17:38:23,653 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 33 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:23,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2025-02-05 17:38:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2825. [2025-02-05 17:38:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.5044279135671272) internal successors, (4247), 2824 states have internal predecessors, (4247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4247 transitions. [2025-02-05 17:38:23,682 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4247 transitions. Word has length 68 [2025-02-05 17:38:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:23,683 INFO L471 AbstractCegarLoop]: Abstraction has 2825 states and 4247 transitions. [2025-02-05 17:38:23,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4247 transitions. [2025-02-05 17:38:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-05 17:38:23,684 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:23,684 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:23,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-05 17:38:23,684 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:23,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1675746273, now seen corresponding path program 1 times [2025-02-05 17:38:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:23,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382222463] [2025-02-05 17:38:23,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:23,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-05 17:38:23,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-05 17:38:23,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:23,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:23,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:23,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382222463] [2025-02-05 17:38:23,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382222463] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:38:23,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:38:23,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:38:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135641765] [2025-02-05 17:38:23,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:38:23,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:38:23,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:23,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:38:23,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:38:23,744 INFO L87 Difference]: Start difference. First operand 2825 states and 4247 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:23,764 INFO L93 Difference]: Finished difference Result 3467 states and 5118 transitions. [2025-02-05 17:38:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:38:23,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-02-05 17:38:23,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:23,768 INFO L225 Difference]: With dead ends: 3467 [2025-02-05 17:38:23,768 INFO L226 Difference]: Without dead ends: 2189 [2025-02-05 17:38:23,769 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 [2025-02-05 17:38:23,769 INFO L435 NwaCegarLoop]: 1536 mSDtfsCounter, 30 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:23,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:38:23,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2025-02-05 17:38:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2025-02-05 17:38:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.5409610983981694) internal successors, (3367), 2186 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3367 transitions. [2025-02-05 17:38:23,795 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3367 transitions. Word has length 70 [2025-02-05 17:38:23,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:23,795 INFO L471 AbstractCegarLoop]: Abstraction has 2187 states and 3367 transitions. [2025-02-05 17:38:23,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:23,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3367 transitions. [2025-02-05 17:38:23,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-05 17:38:23,796 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:23,797 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:23,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-05 17:38:23,797 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:23,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:23,797 INFO L85 PathProgramCache]: Analyzing trace with hash 642136166, now seen corresponding path program 1 times [2025-02-05 17:38:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:23,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513945287] [2025-02-05 17:38:23,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:23,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-05 17:38:23,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 17:38:23,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:23,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:25,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:25,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513945287] [2025-02-05 17:38:25,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513945287] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:38:25,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644757812] [2025-02-05 17:38:25,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:25,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:38:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:38:25,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:38:25,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 17:38:25,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-05 17:38:25,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 17:38:25,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:25,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:25,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 17:38:25,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:38:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:25,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 17:38:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:26,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644757812] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 17:38:26,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 17:38:26,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2025-02-05 17:38:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518944654] [2025-02-05 17:38:26,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 17:38:26,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-05 17:38:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:26,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-05 17:38:26,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2025-02-05 17:38:26,444 INFO L87 Difference]: Start difference. First operand 2187 states and 3367 transitions. Second operand has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:28,629 INFO L93 Difference]: Finished difference Result 5325 states and 7620 transitions. [2025-02-05 17:38:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-05 17:38:28,629 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2025-02-05 17:38:28,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:28,638 INFO L225 Difference]: With dead ends: 5325 [2025-02-05 17:38:28,638 INFO L226 Difference]: Without dead ends: 4685 [2025-02-05 17:38:28,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=840, Invalid=3716, Unknown=0, NotChecked=0, Total=4556 [2025-02-05 17:38:28,641 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 23694 mSDsluCounter, 7930 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23694 SdHoareTripleChecker+Valid, 9417 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:28,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23694 Valid, 9417 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 17:38:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4685 states. [2025-02-05 17:38:28,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4685 to 4629. [2025-02-05 17:38:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4627 states have (on average 1.4194942727469202) internal successors, (6568), 4628 states have internal predecessors, (6568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 6568 transitions. [2025-02-05 17:38:28,738 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 6568 transitions. Word has length 72 [2025-02-05 17:38:28,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:28,738 INFO L471 AbstractCegarLoop]: Abstraction has 4629 states and 6568 transitions. [2025-02-05 17:38:28,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:28,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 6568 transitions. [2025-02-05 17:38:28,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-05 17:38:28,739 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:28,739 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:28,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 17:38:28,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:38:28,945 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:28,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash 934575819, now seen corresponding path program 1 times [2025-02-05 17:38:28,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:28,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252283438] [2025-02-05 17:38:28,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:28,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-05 17:38:28,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-05 17:38:28,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:28,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:29,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:29,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252283438] [2025-02-05 17:38:29,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252283438] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:38:29,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364931069] [2025-02-05 17:38:29,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:29,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:38:29,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:38:29,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:38:29,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 17:38:29,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-05 17:38:29,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-05 17:38:29,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:29,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:29,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 17:38:30,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:38:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:30,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 17:38:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364931069] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 17:38:31,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 17:38:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2025-02-05 17:38:31,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423527074] [2025-02-05 17:38:31,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 17:38:31,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-05 17:38:31,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:31,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-05 17:38:31,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2025-02-05 17:38:31,043 INFO L87 Difference]: Start difference. First operand 4629 states and 6568 transitions. Second operand has 28 states, 28 states have (on average 6.464285714285714) internal successors, (181), 27 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:32,438 INFO L93 Difference]: Finished difference Result 16567 states and 22294 transitions. [2025-02-05 17:38:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-05 17:38:32,438 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.464285714285714) internal successors, (181), 27 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2025-02-05 17:38:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:32,450 INFO L225 Difference]: With dead ends: 16567 [2025-02-05 17:38:32,450 INFO L226 Difference]: Without dead ends: 13485 [2025-02-05 17:38:32,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=582, Invalid=2388, Unknown=0, NotChecked=0, Total=2970 [2025-02-05 17:38:32,454 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 17031 mSDsluCounter, 5180 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17031 SdHoareTripleChecker+Valid, 6679 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:32,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17031 Valid, 6679 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 17:38:32,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13485 states. [2025-02-05 17:38:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13485 to 13385. [2025-02-05 17:38:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13385 states, 13383 states have (on average 1.3422999327505043) internal successors, (17964), 13384 states have internal predecessors, (17964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13385 states to 13385 states and 17964 transitions. [2025-02-05 17:38:32,669 INFO L78 Accepts]: Start accepts. Automaton has 13385 states and 17964 transitions. Word has length 73 [2025-02-05 17:38:32,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:32,670 INFO L471 AbstractCegarLoop]: Abstraction has 13385 states and 17964 transitions. [2025-02-05 17:38:32,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.464285714285714) internal successors, (181), 27 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:32,670 INFO L276 IsEmpty]: Start isEmpty. Operand 13385 states and 17964 transitions. [2025-02-05 17:38:32,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-05 17:38:32,671 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:32,672 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:32,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 17:38:32,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:38:32,873 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:32,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash 542316651, now seen corresponding path program 1 times [2025-02-05 17:38:32,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:32,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911905305] [2025-02-05 17:38:32,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:32,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:32,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-05 17:38:32,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-05 17:38:32,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:32,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:33,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:33,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911905305] [2025-02-05 17:38:33,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911905305] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:38:33,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913069971] [2025-02-05 17:38:33,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:33,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:38:33,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:38:33,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:38:33,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 17:38:33,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-05 17:38:33,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-05 17:38:33,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:33,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:33,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-05 17:38:33,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:38:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:34,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 17:38:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:36,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913069971] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 17:38:36,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 17:38:36,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 15] total 33 [2025-02-05 17:38:36,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186956595] [2025-02-05 17:38:36,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 17:38:36,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-05 17:38:36,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:36,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-05 17:38:36,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 17:38:36,118 INFO L87 Difference]: Start difference. First operand 13385 states and 17964 transitions. Second operand has 33 states, 33 states have (on average 5.848484848484849) internal successors, (193), 33 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:39,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:39,050 INFO L93 Difference]: Finished difference Result 35781 states and 47462 transitions. [2025-02-05 17:38:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-05 17:38:39,050 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.848484848484849) internal successors, (193), 33 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2025-02-05 17:38:39,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:39,076 INFO L225 Difference]: With dead ends: 35781 [2025-02-05 17:38:39,077 INFO L226 Difference]: Without dead ends: 23943 [2025-02-05 17:38:39,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1454, Invalid=4398, Unknown=0, NotChecked=0, Total=5852 [2025-02-05 17:38:39,089 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 17938 mSDsluCounter, 9635 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17938 SdHoareTripleChecker+Valid, 11177 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:39,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17938 Valid, 11177 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 17:38:39,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23943 states. [2025-02-05 17:38:39,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23943 to 15913. [2025-02-05 17:38:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15913 states, 15911 states have (on average 1.3202187166111494) internal successors, (21006), 15912 states have internal predecessors, (21006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15913 states to 15913 states and 21006 transitions. [2025-02-05 17:38:39,463 INFO L78 Accepts]: Start accepts. Automaton has 15913 states and 21006 transitions. Word has length 73 [2025-02-05 17:38:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:39,463 INFO L471 AbstractCegarLoop]: Abstraction has 15913 states and 21006 transitions. [2025-02-05 17:38:39,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.848484848484849) internal successors, (193), 33 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 15913 states and 21006 transitions. [2025-02-05 17:38:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-05 17:38:39,465 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:39,465 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:39,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 17:38:39,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:38:39,670 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:39,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1987671038, now seen corresponding path program 1 times [2025-02-05 17:38:39,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:39,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331114236] [2025-02-05 17:38:39,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:39,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-05 17:38:39,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 17:38:39,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:39,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:40,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:40,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331114236] [2025-02-05 17:38:40,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331114236] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:38:40,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742938447] [2025-02-05 17:38:40,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:40,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:38:40,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:38:40,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:38:40,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 17:38:40,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-05 17:38:40,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 17:38:40,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:40,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:40,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-05 17:38:40,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:38:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:42,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 17:38:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:46,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742938447] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 17:38:46,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 17:38:46,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 24] total 51 [2025-02-05 17:38:46,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092399607] [2025-02-05 17:38:46,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 17:38:46,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-05 17:38:46,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:46,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-05 17:38:46,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=2147, Unknown=0, NotChecked=0, Total=2550 [2025-02-05 17:38:46,018 INFO L87 Difference]: Start difference. First operand 15913 states and 21006 transitions. Second operand has 51 states, 51 states have (on average 3.9607843137254903) internal successors, (202), 51 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:38:50,891 INFO L93 Difference]: Finished difference Result 40972 states and 52989 transitions. [2025-02-05 17:38:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-02-05 17:38:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.9607843137254903) internal successors, (202), 51 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-02-05 17:38:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:38:50,922 INFO L225 Difference]: With dead ends: 40972 [2025-02-05 17:38:50,923 INFO L226 Difference]: Without dead ends: 26606 [2025-02-05 17:38:50,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2970 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2390, Invalid=8116, Unknown=0, NotChecked=0, Total=10506 [2025-02-05 17:38:50,938 INFO L435 NwaCegarLoop]: 1502 mSDtfsCounter, 27520 mSDsluCounter, 14153 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27520 SdHoareTripleChecker+Valid, 15655 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:38:50,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27520 Valid, 15655 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 17:38:50,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26606 states. [2025-02-05 17:38:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26606 to 15189. [2025-02-05 17:38:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15189 states, 15187 states have (on average 1.3122407322051755) internal successors, (19929), 15188 states have internal predecessors, (19929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15189 states to 15189 states and 19929 transitions. [2025-02-05 17:38:51,339 INFO L78 Accepts]: Start accepts. Automaton has 15189 states and 19929 transitions. Word has length 74 [2025-02-05 17:38:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:38:51,339 INFO L471 AbstractCegarLoop]: Abstraction has 15189 states and 19929 transitions. [2025-02-05 17:38:51,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.9607843137254903) internal successors, (202), 51 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:38:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 15189 states and 19929 transitions. [2025-02-05 17:38:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-05 17:38:51,341 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:38:51,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:38:51,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 17:38:51,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-05 17:38:51,545 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:38:51,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:38:51,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1202430224, now seen corresponding path program 1 times [2025-02-05 17:38:51,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:38:51,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591167390] [2025-02-05 17:38:51,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:51,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:38:51,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 17:38:51,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 17:38:51,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:51,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:53,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:38:53,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591167390] [2025-02-05 17:38:53,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591167390] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:38:53,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312239695] [2025-02-05 17:38:53,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:38:53,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:38:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:38:53,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:38:53,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 17:38:53,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 17:38:53,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 17:38:53,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:38:53,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:38:53,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-05 17:38:53,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:38:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:54,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 17:38:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:38:54,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312239695] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 17:38:54,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 17:38:54,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 12, 12] total 47 [2025-02-05 17:38:54,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967119669] [2025-02-05 17:38:54,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 17:38:54,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-02-05 17:38:54,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:38:54,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-02-05 17:38:54,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1998, Unknown=0, NotChecked=0, Total=2162 [2025-02-05 17:38:54,963 INFO L87 Difference]: Start difference. First operand 15189 states and 19929 transitions. Second operand has 47 states, 47 states have (on average 4.319148936170213) internal successors, (203), 47 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:39:03,763 INFO L93 Difference]: Finished difference Result 32430 states and 42289 transitions. [2025-02-05 17:39:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2025-02-05 17:39:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.319148936170213) internal successors, (203), 47 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2025-02-05 17:39:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:39:03,791 INFO L225 Difference]: With dead ends: 32430 [2025-02-05 17:39:03,791 INFO L226 Difference]: Without dead ends: 27276 [2025-02-05 17:39:03,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3943 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3214, Invalid=11548, Unknown=0, NotChecked=0, Total=14762 [2025-02-05 17:39:03,803 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 24701 mSDsluCounter, 26341 mSDsCounter, 0 mSdLazyCounter, 3308 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24701 SdHoareTripleChecker+Valid, 27879 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 3308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-05 17:39:03,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24701 Valid, 27879 Invalid, 3439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 3308 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-05 17:39:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27276 states. [2025-02-05 17:39:04,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27276 to 17373. [2025-02-05 17:39:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17373 states, 17371 states have (on average 1.3040700017270164) internal successors, (22653), 17372 states have internal predecessors, (22653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17373 states to 17373 states and 22653 transitions. [2025-02-05 17:39:04,335 INFO L78 Accepts]: Start accepts. Automaton has 17373 states and 22653 transitions. Word has length 75 [2025-02-05 17:39:04,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:39:04,340 INFO L471 AbstractCegarLoop]: Abstraction has 17373 states and 22653 transitions. [2025-02-05 17:39:04,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.319148936170213) internal successors, (203), 47 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand 17373 states and 22653 transitions. [2025-02-05 17:39:04,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-05 17:39:04,341 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:39:04,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:39:04,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 17:39:04,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-05 17:39:04,542 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:39:04,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:39:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash -917270960, now seen corresponding path program 1 times [2025-02-05 17:39:04,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:39:04,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100354559] [2025-02-05 17:39:04,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:39:04,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:39:04,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 17:39:04,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 17:39:04,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:39:04,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:39:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:39:05,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:39:05,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100354559] [2025-02-05 17:39:05,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100354559] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:39:05,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428270820] [2025-02-05 17:39:05,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:39:05,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:39:05,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:39:05,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:39:05,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 17:39:05,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 17:39:05,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 17:39:05,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:39:05,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:39:05,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 17:39:05,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:39:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:39:05,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 17:39:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:39:07,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428270820] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 17:39:07,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 17:39:07,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2025-02-05 17:39:07,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96063714] [2025-02-05 17:39:07,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 17:39:07,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-05 17:39:07,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:39:07,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-05 17:39:07,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 17:39:07,182 INFO L87 Difference]: Start difference. First operand 17373 states and 22653 transitions. Second operand has 33 states, 33 states have (on average 5.848484848484849) internal successors, (193), 33 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:39:10,300 INFO L93 Difference]: Finished difference Result 25083 states and 32472 transitions. [2025-02-05 17:39:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-05 17:39:10,300 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.848484848484849) internal successors, (193), 33 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2025-02-05 17:39:10,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:39:10,319 INFO L225 Difference]: With dead ends: 25083 [2025-02-05 17:39:10,320 INFO L226 Difference]: Without dead ends: 15481 [2025-02-05 17:39:10,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1127, Invalid=4129, Unknown=0, NotChecked=0, Total=5256 [2025-02-05 17:39:10,329 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 11533 mSDsluCounter, 21352 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11533 SdHoareTripleChecker+Valid, 22866 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 17:39:10,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11533 Valid, 22866 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 17:39:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15481 states. [2025-02-05 17:39:10,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15481 to 13673. [2025-02-05 17:39:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13673 states, 13671 states have (on average 1.308390022675737) internal successors, (17887), 13672 states have internal predecessors, (17887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13673 states to 13673 states and 17887 transitions. [2025-02-05 17:39:10,715 INFO L78 Accepts]: Start accepts. Automaton has 13673 states and 17887 transitions. Word has length 75 [2025-02-05 17:39:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:39:10,715 INFO L471 AbstractCegarLoop]: Abstraction has 13673 states and 17887 transitions. [2025-02-05 17:39:10,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.848484848484849) internal successors, (193), 33 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 13673 states and 17887 transitions. [2025-02-05 17:39:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-05 17:39:10,716 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:39:10,716 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:39:10,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 17:39:10,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-05 17:39:10,917 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:39:10,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:39:10,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1068467684, now seen corresponding path program 1 times [2025-02-05 17:39:10,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:39:10,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089247009] [2025-02-05 17:39:10,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:39:10,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:39:10,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-05 17:39:10,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-05 17:39:10,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:39:10,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:39:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 17:39:10,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:39:10,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089247009] [2025-02-05 17:39:10,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089247009] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:39:10,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423428364] [2025-02-05 17:39:10,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:39:10,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:39:10,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:39:10,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:39:11,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 17:39:11,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-05 17:39:11,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-05 17:39:11,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:39:11,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:39:11,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 17:39:11,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:39:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 17:39:11,169 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 17:39:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 17:39:11,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423428364] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 17:39:11,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 17:39:11,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2025-02-05 17:39:11,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839329504] [2025-02-05 17:39:11,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 17:39:11,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 17:39:11,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:39:11,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 17:39:11,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:39:11,367 INFO L87 Difference]: Start difference. First operand 13673 states and 17887 transitions. Second operand has 9 states, 9 states have (on average 20.666666666666668) internal successors, (186), 9 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:39:12,072 INFO L93 Difference]: Finished difference Result 31944 states and 40552 transitions. [2025-02-05 17:39:12,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 17:39:12,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.666666666666668) internal successors, (186), 9 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2025-02-05 17:39:12,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:39:12,093 INFO L225 Difference]: With dead ends: 31944 [2025-02-05 17:39:12,094 INFO L226 Difference]: Without dead ends: 19818 [2025-02-05 17:39:12,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2025-02-05 17:39:12,103 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 4411 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 4706 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:39:12,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 4706 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:39:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19818 states. [2025-02-05 17:39:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19818 to 18784. [2025-02-05 17:39:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18784 states, 18782 states have (on average 1.2517303801512085) internal successors, (23510), 18783 states have internal predecessors, (23510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18784 states to 18784 states and 23510 transitions. [2025-02-05 17:39:12,816 INFO L78 Accepts]: Start accepts. Automaton has 18784 states and 23510 transitions. Word has length 76 [2025-02-05 17:39:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:39:12,816 INFO L471 AbstractCegarLoop]: Abstraction has 18784 states and 23510 transitions. [2025-02-05 17:39:12,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.666666666666668) internal successors, (186), 9 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18784 states and 23510 transitions. [2025-02-05 17:39:12,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 17:39:12,817 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:39:12,817 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:39:12,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 17:39:13,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:39:13,022 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:39:13,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:39:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash -891509509, now seen corresponding path program 1 times [2025-02-05 17:39:13,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:39:13,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501011086] [2025-02-05 17:39:13,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:39:13,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:39:13,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 17:39:13,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 17:39:13,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:39:13,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:39:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 17:39:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:39:13,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501011086] [2025-02-05 17:39:13,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501011086] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:39:13,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:39:13,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 17:39:13,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347347759] [2025-02-05 17:39:13,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:39:13,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:39:13,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:39:13,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:39:13,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:39:13,063 INFO L87 Difference]: Start difference. First operand 18784 states and 23510 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:16,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:39:16,438 INFO L93 Difference]: Finished difference Result 21790 states and 28437 transitions. [2025-02-05 17:39:16,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:39:16,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2025-02-05 17:39:16,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:39:16,553 INFO L225 Difference]: With dead ends: 21790 [2025-02-05 17:39:16,553 INFO L226 Difference]: Without dead ends: 20286 [2025-02-05 17:39:16,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:39:16,558 INFO L435 NwaCegarLoop]: 554 mSDtfsCounter, 811 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-05 17:39:16,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 561 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-05 17:39:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20286 states. [2025-02-05 17:39:17,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20286 to 20286. [2025-02-05 17:39:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20286 states, 20284 states have (on average 1.2487675014789983) internal successors, (25330), 20285 states have internal predecessors, (25330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20286 states to 20286 states and 25330 transitions. [2025-02-05 17:39:17,155 INFO L78 Accepts]: Start accepts. Automaton has 20286 states and 25330 transitions. Word has length 101 [2025-02-05 17:39:17,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:39:17,155 INFO L471 AbstractCegarLoop]: Abstraction has 20286 states and 25330 transitions. [2025-02-05 17:39:17,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 20286 states and 25330 transitions. [2025-02-05 17:39:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-05 17:39:17,157 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:39:17,157 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:39:17,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-05 17:39:17,157 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:39:17,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:39:17,158 INFO L85 PathProgramCache]: Analyzing trace with hash -157714171, now seen corresponding path program 1 times [2025-02-05 17:39:17,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:39:17,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434423704] [2025-02-05 17:39:17,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:39:17,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:39:17,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-05 17:39:17,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-05 17:39:17,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:39:17,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:39:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:39:17,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:39:17,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434423704] [2025-02-05 17:39:17,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434423704] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:39:17,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:39:17,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 17:39:17,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241694933] [2025-02-05 17:39:17,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:39:17,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:39:17,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:39:17,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:39:17,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:39:17,199 INFO L87 Difference]: Start difference. First operand 20286 states and 25330 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:20,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:39:20,713 INFO L93 Difference]: Finished difference Result 26298 states and 33898 transitions. [2025-02-05 17:39:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:39:20,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2025-02-05 17:39:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:39:20,739 INFO L225 Difference]: With dead ends: 26298 [2025-02-05 17:39:20,739 INFO L226 Difference]: Without dead ends: 23292 [2025-02-05 17:39:20,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:39:20,747 INFO L435 NwaCegarLoop]: 662 mSDtfsCounter, 1001 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-05 17:39:20,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 669 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-05 17:39:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23292 states. [2025-02-05 17:39:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23292 to 23290. [2025-02-05 17:39:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23290 states, 23288 states have (on average 1.246607694950189) internal successors, (29031), 23289 states have internal predecessors, (29031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23290 states to 23290 states and 29031 transitions. [2025-02-05 17:39:21,657 INFO L78 Accepts]: Start accepts. Automaton has 23290 states and 29031 transitions. Word has length 105 [2025-02-05 17:39:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:39:21,658 INFO L471 AbstractCegarLoop]: Abstraction has 23290 states and 29031 transitions. [2025-02-05 17:39:21,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:39:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 23290 states and 29031 transitions. [2025-02-05 17:39:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-05 17:39:21,663 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:39:21,663 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:39:21,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-05 17:39:21,664 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:39:21,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:39:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash 791945369, now seen corresponding path program 1 times [2025-02-05 17:39:21,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:39:21,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43454343] [2025-02-05 17:39:21,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:39:21,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:39:21,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-05 17:39:21,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-05 17:39:21,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:39:21,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:39:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:39:22,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:39:22,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43454343] [2025-02-05 17:39:22,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43454343] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:39:22,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54599864] [2025-02-05 17:39:22,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:39:22,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:39:22,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:39:22,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:39:22,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 17:39:22,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-05 17:39:22,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-05 17:39:22,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:39:22,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:39:22,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-02-05 17:39:22,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:39:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:39:27,248 INFO L312 TraceCheckSpWp]: Computing backward predicates...