./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52f0467b9e67537a0ac20514e4a1726e96ded28a47950e156d374c001df2ce1c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:15:37,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:15:37,961 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 07:15:37,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:15:37,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:15:37,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:15:37,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:15:37,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:15:37,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:15:37,995 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:15:37,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:15:37,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:15:37,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:15:37,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:15:37,996 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:15:37,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:15:37,997 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:15:37,998 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:15:37,998 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:15:37,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:15:37,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:15:37,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:15:37,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:15:37,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:15:37,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:15:37,998 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:15:37,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:15:37,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 07:15:37,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 07:15:37,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:15:37,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:15:37,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:15:37,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:15:37,999 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52f0467b9e67537a0ac20514e4a1726e96ded28a47950e156d374c001df2ce1c [2025-03-08 07:15:38,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:15:38,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:15:38,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:15:38,232 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:15:38,232 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:15:38,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c [2025-03-08 07:15:39,376 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c892853c2/d5e9380761b34258a4a876f945158152/FLAG392b30bea [2025-03-08 07:15:39,870 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:15:39,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c [2025-03-08 07:15:39,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c892853c2/d5e9380761b34258a4a876f945158152/FLAG392b30bea [2025-03-08 07:15:39,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c892853c2/d5e9380761b34258a4a876f945158152 [2025-03-08 07:15:39,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:15:39,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:15:39,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:15:39,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:15:39,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:15:39,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:15:39" (1/1) ... [2025-03-08 07:15:39,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205acaca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:39, skipping insertion in model container [2025-03-08 07:15:39,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:15:39" (1/1) ... [2025-03-08 07:15:40,008 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:15:40,291 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[8653,8666] [2025-03-08 07:15:40,347 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[16401,16414] [2025-03-08 07:15:40,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:15:40,840 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:15:40,870 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[8653,8666] [2025-03-08 07:15:40,880 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[16401,16414] [2025-03-08 07:15:41,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:15:41,206 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:15:41,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41 WrapperNode [2025-03-08 07:15:41,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:15:41,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:15:41,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:15:41,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:15:41,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,519 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5034 [2025-03-08 07:15:41,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:15:41,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:15:41,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:15:41,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:15:41,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,740 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 07:15:41,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,816 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:15:41,959 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:15:41,959 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:15:41,959 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:15:41,961 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (1/1) ... [2025-03-08 07:15:41,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:15:41,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:15:41,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 07:15:41,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 07:15:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:15:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 07:15:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:15:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:15:42,094 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:15:42,096 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:15:45,558 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5022: havoc calculate_output3_#t~ret36#1; [2025-03-08 07:15:45,558 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2053: havoc calculate_output_#t~ret34#1; [2025-03-08 07:15:45,558 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3532: havoc calculate_output2_#t~ret35#1; [2025-03-08 07:15:45,715 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2025-03-08 07:15:45,715 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:15:45,739 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:15:45,739 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:15:45,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:15:45 BoogieIcfgContainer [2025-03-08 07:15:45,740 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:15:45,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:15:45,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:15:45,745 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:15:45,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:15:39" (1/3) ... [2025-03-08 07:15:45,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2011a139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:15:45, skipping insertion in model container [2025-03-08 07:15:45,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:15:41" (2/3) ... [2025-03-08 07:15:45,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2011a139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:15:45, skipping insertion in model container [2025-03-08 07:15:45,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:15:45" (3/3) ... [2025-03-08 07:15:45,747 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c [2025-03-08 07:15:45,762 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:15:45,764 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c that has 1 procedures, 884 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-08 07:15:45,839 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:15:45,849 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;@3d2ffe26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:15:45,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 07:15:45,855 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) [2025-03-08 07:15:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 07:15:45,862 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:45,862 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] [2025-03-08 07:15:45,862 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:45,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:45,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1657989458, now seen corresponding path program 1 times [2025-03-08 07:15:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:45,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741520600] [2025-03-08 07:15:45,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:45,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:45,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 07:15:45,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 07:15:45,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:45,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:46,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741520600] [2025-03-08 07:15:46,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741520600] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:46,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:46,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 07:15:46,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529443484] [2025-03-08 07:15:46,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:46,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 07:15:46,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:46,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 07:15:46,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 07:15:46,061 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) [2025-03-08 07:15:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:46,133 INFO L93 Difference]: Finished difference Result 1739 states and 3302 transitions. [2025-03-08 07:15:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 07:15:46,135 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 [2025-03-08 07:15:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:46,147 INFO L225 Difference]: With dead ends: 1739 [2025-03-08 07:15:46,147 INFO L226 Difference]: Without dead ends: 819 [2025-03-08 07:15:46,152 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 [2025-03-08 07:15:46,154 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 [2025-03-08 07:15:46,154 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] [2025-03-08 07:15:46,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2025-03-08 07:15:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2025-03-08 07:15:46,214 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) [2025-03-08 07:15:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2025-03-08 07:15:46,221 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2025-03-08 07:15:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:46,221 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2025-03-08 07:15:46,222 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) [2025-03-08 07:15:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2025-03-08 07:15:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 07:15:46,222 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:46,223 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] [2025-03-08 07:15:46,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 07:15:46,223 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:46,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1147455281, now seen corresponding path program 1 times [2025-03-08 07:15:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:46,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697646452] [2025-03-08 07:15:46,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:46,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 07:15:46,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 07:15:46,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:46,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:46,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:46,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697646452] [2025-03-08 07:15:46,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697646452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:46,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:46,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:15:46,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598841050] [2025-03-08 07:15:46,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:46,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:15:46,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:46,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:15:46,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:15:46,369 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) [2025-03-08 07:15:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:46,471 INFO L93 Difference]: Finished difference Result 895 states and 1666 transitions. [2025-03-08 07:15:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 07:15:46,472 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 [2025-03-08 07:15:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:46,476 INFO L225 Difference]: With dead ends: 895 [2025-03-08 07:15:46,476 INFO L226 Difference]: Without dead ends: 855 [2025-03-08 07:15:46,476 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 [2025-03-08 07:15:46,477 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, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:15:46,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6147 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:15:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2025-03-08 07:15:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 819. [2025-03-08 07:15:46,498 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) [2025-03-08 07:15:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2025-03-08 07:15:46,502 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2025-03-08 07:15:46,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:46,502 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2025-03-08 07:15:46,502 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) [2025-03-08 07:15:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2025-03-08 07:15:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-08 07:15:46,506 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:46,506 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] [2025-03-08 07:15:46,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 07:15:46,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:46,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1619243067, now seen corresponding path program 1 times [2025-03-08 07:15:46,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:46,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328100251] [2025-03-08 07:15:46,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:46,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-08 07:15:46,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-08 07:15:46,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:46,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328100251] [2025-03-08 07:15:46,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328100251] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:46,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:46,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:15:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859756547] [2025-03-08 07:15:46,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:46,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:15:46,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:46,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:15:46,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:15:46,688 INFO L87 Difference]: Start difference. First operand 819 states and 1525 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) [2025-03-08 07:15:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:46,843 INFO L93 Difference]: Finished difference Result 1107 states and 1981 transitions. [2025-03-08 07:15:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:15:46,846 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 [2025-03-08 07:15:46,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:46,851 INFO L225 Difference]: With dead ends: 1107 [2025-03-08 07:15:46,851 INFO L226 Difference]: Without dead ends: 1071 [2025-03-08 07:15:46,852 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 [2025-03-08 07:15:46,854 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 [2025-03-08 07:15:46,854 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] [2025-03-08 07:15:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2025-03-08 07:15:46,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 853. [2025-03-08 07:15:46,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8554641598119859) internal successors, (1579), 852 states have internal predecessors, (1579), 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) [2025-03-08 07:15:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1579 transitions. [2025-03-08 07:15:46,884 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1579 transitions. Word has length 44 [2025-03-08 07:15:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:46,884 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1579 transitions. [2025-03-08 07:15:46,884 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) [2025-03-08 07:15:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1579 transitions. [2025-03-08 07:15:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-08 07:15:46,887 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:46,887 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] [2025-03-08 07:15:46,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 07:15:46,888 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:46,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1860187818, now seen corresponding path program 1 times [2025-03-08 07:15:46,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:46,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333961115] [2025-03-08 07:15:46,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:46,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-08 07:15:46,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-08 07:15:46,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:46,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:46,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:46,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333961115] [2025-03-08 07:15:46,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333961115] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:46,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:46,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:46,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418557934] [2025-03-08 07:15:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:46,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:15:46,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:46,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:15:46,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:46,984 INFO L87 Difference]: Start difference. First operand 853 states and 1579 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) [2025-03-08 07:15:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:47,012 INFO L93 Difference]: Finished difference Result 982 states and 1782 transitions. [2025-03-08 07:15:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:15:47,012 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 [2025-03-08 07:15:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:47,015 INFO L225 Difference]: With dead ends: 982 [2025-03-08 07:15:47,016 INFO L226 Difference]: Without dead ends: 912 [2025-03-08 07:15:47,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:47,016 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 [2025-03-08 07:15:47,017 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] [2025-03-08 07:15:47,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2025-03-08 07:15:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2025-03-08 07:15:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 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) [2025-03-08 07:15:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2025-03-08 07:15:47,035 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 46 [2025-03-08 07:15:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:47,035 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2025-03-08 07:15:47,035 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) [2025-03-08 07:15:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2025-03-08 07:15:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-08 07:15:47,036 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:47,036 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] [2025-03-08 07:15:47,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 07:15:47,036 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:47,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1827864583, now seen corresponding path program 1 times [2025-03-08 07:15:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:47,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221741269] [2025-03-08 07:15:47,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:47,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:47,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-08 07:15:47,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-08 07:15:47,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:47,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:47,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:47,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221741269] [2025-03-08 07:15:47,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221741269] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:47,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:47,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:15:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835734111] [2025-03-08 07:15:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:47,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:15:47,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:47,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:15:47,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:15:47,236 INFO L87 Difference]: Start difference. First operand 910 states and 1667 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) [2025-03-08 07:15:47,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:47,329 INFO L93 Difference]: Finished difference Result 1039 states and 1867 transitions. [2025-03-08 07:15:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:15:47,330 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 [2025-03-08 07:15:47,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:47,333 INFO L225 Difference]: With dead ends: 1039 [2025-03-08 07:15:47,333 INFO L226 Difference]: Without dead ends: 912 [2025-03-08 07:15:47,333 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 [2025-03-08 07:15:47,336 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, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:15:47,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4446 Valid, 1678 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:15:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2025-03-08 07:15:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2025-03-08 07:15:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8337004405286343) internal successors, (1665), 909 states have internal predecessors, (1665), 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) [2025-03-08 07:15:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1665 transitions. [2025-03-08 07:15:47,353 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1665 transitions. Word has length 46 [2025-03-08 07:15:47,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:47,354 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1665 transitions. [2025-03-08 07:15:47,354 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) [2025-03-08 07:15:47,354 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1665 transitions. [2025-03-08 07:15:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-08 07:15:47,354 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:47,354 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] [2025-03-08 07:15:47,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 07:15:47,355 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:47,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -798689491, now seen corresponding path program 1 times [2025-03-08 07:15:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:47,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376344628] [2025-03-08 07:15:47,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:47,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-08 07:15:47,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 07:15:47,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:47,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:47,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:47,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376344628] [2025-03-08 07:15:47,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376344628] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:47,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:47,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:15:47,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419399118] [2025-03-08 07:15:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:47,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:15:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:47,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:15:47,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:15:47,559 INFO L87 Difference]: Start difference. First operand 910 states and 1665 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) [2025-03-08 07:15:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:47,587 INFO L93 Difference]: Finished difference Result 918 states and 1674 transitions. [2025-03-08 07:15:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 07:15:47,588 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 [2025-03-08 07:15:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:47,591 INFO L225 Difference]: With dead ends: 918 [2025-03-08 07:15:47,591 INFO L226 Difference]: Without dead ends: 916 [2025-03-08 07:15:47,592 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 [2025-03-08 07:15:47,593 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 [2025-03-08 07:15:47,594 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] [2025-03-08 07:15:47,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2025-03-08 07:15:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2025-03-08 07:15:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8271334792122538) internal successors, (1670), 915 states have internal predecessors, (1670), 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) [2025-03-08 07:15:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1670 transitions. [2025-03-08 07:15:47,615 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1670 transitions. Word has length 47 [2025-03-08 07:15:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:47,616 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1670 transitions. [2025-03-08 07:15:47,616 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) [2025-03-08 07:15:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1670 transitions. [2025-03-08 07:15:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-08 07:15:47,617 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:47,617 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] [2025-03-08 07:15:47,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 07:15:47,617 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:47,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash -583055145, now seen corresponding path program 1 times [2025-03-08 07:15:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326299283] [2025-03-08 07:15:47,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:47,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 07:15:47,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 07:15:47,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:47,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:47,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326299283] [2025-03-08 07:15:47,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326299283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:47,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:47,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:47,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342850525] [2025-03-08 07:15:47,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:47,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:15:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:47,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:15:47,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:47,666 INFO L87 Difference]: Start difference. First operand 916 states and 1670 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) [2025-03-08 07:15:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:47,684 INFO L93 Difference]: Finished difference Result 1062 states and 1891 transitions. [2025-03-08 07:15:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:15:47,684 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 [2025-03-08 07:15:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:47,687 INFO L225 Difference]: With dead ends: 1062 [2025-03-08 07:15:47,687 INFO L226 Difference]: Without dead ends: 986 [2025-03-08 07:15:47,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:47,688 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 [2025-03-08 07:15:47,688 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] [2025-03-08 07:15:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2025-03-08 07:15:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2025-03-08 07:15:47,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.8034623217922607) internal successors, (1771), 983 states have internal predecessors, (1771), 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) [2025-03-08 07:15:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1771 transitions. [2025-03-08 07:15:47,704 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1771 transitions. Word has length 48 [2025-03-08 07:15:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:47,704 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1771 transitions. [2025-03-08 07:15:47,705 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) [2025-03-08 07:15:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1771 transitions. [2025-03-08 07:15:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-08 07:15:47,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:47,705 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] [2025-03-08 07:15:47,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 07:15:47,706 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:47,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:47,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1031000681, now seen corresponding path program 1 times [2025-03-08 07:15:47,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:47,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121423473] [2025-03-08 07:15:47,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:47,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:47,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 07:15:47,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 07:15:47,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:47,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:47,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:47,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121423473] [2025-03-08 07:15:47,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121423473] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:47,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:47,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:47,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402566064] [2025-03-08 07:15:47,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:47,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:15:47,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:47,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:15:47,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:47,751 INFO L87 Difference]: Start difference. First operand 984 states and 1771 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) [2025-03-08 07:15:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:47,768 INFO L93 Difference]: Finished difference Result 1358 states and 2331 transitions. [2025-03-08 07:15:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:15:47,769 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 [2025-03-08 07:15:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:47,773 INFO L225 Difference]: With dead ends: 1358 [2025-03-08 07:15:47,773 INFO L226 Difference]: Without dead ends: 1159 [2025-03-08 07:15:47,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:47,774 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 [2025-03-08 07:15:47,774 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] [2025-03-08 07:15:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2025-03-08 07:15:47,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2025-03-08 07:15:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1155 states have (on average 1.7515151515151515) internal successors, (2023), 1156 states have internal predecessors, (2023), 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) [2025-03-08 07:15:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2023 transitions. [2025-03-08 07:15:47,794 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2023 transitions. Word has length 48 [2025-03-08 07:15:47,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:47,794 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 2023 transitions. [2025-03-08 07:15:47,795 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) [2025-03-08 07:15:47,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2023 transitions. [2025-03-08 07:15:47,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-08 07:15:47,795 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:47,795 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] [2025-03-08 07:15:47,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 07:15:47,795 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:47,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash -615824809, now seen corresponding path program 1 times [2025-03-08 07:15:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:47,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523913241] [2025-03-08 07:15:47,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:47,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:47,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 07:15:47,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 07:15:47,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:47,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:47,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:47,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523913241] [2025-03-08 07:15:47,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523913241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:47,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:47,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:47,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231177425] [2025-03-08 07:15:47,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:47,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:15:47,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:47,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:15:47,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:47,838 INFO L87 Difference]: Start difference. First operand 1157 states and 2023 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) [2025-03-08 07:15:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:47,862 INFO L93 Difference]: Finished difference Result 1853 states and 3045 transitions. [2025-03-08 07:15:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:15:47,862 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 [2025-03-08 07:15:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:47,867 INFO L225 Difference]: With dead ends: 1853 [2025-03-08 07:15:47,867 INFO L226 Difference]: Without dead ends: 1481 [2025-03-08 07:15:47,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:47,870 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 [2025-03-08 07:15:47,871 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] [2025-03-08 07:15:47,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2025-03-08 07:15:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2025-03-08 07:15:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 1.6784021665538253) internal successors, (2479), 1478 states have internal predecessors, (2479), 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) [2025-03-08 07:15:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2479 transitions. [2025-03-08 07:15:47,898 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2479 transitions. Word has length 48 [2025-03-08 07:15:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:47,898 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 2479 transitions. [2025-03-08 07:15:47,898 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) [2025-03-08 07:15:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2479 transitions. [2025-03-08 07:15:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-08 07:15:47,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:47,899 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] [2025-03-08 07:15:47,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 07:15:47,900 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:47,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1102543081, now seen corresponding path program 1 times [2025-03-08 07:15:47,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:47,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123832477] [2025-03-08 07:15:47,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:47,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:47,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 07:15:47,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 07:15:47,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:47,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:47,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123832477] [2025-03-08 07:15:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123832477] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:47,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:47,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:47,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631834951] [2025-03-08 07:15:47,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:47,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:15:47,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:47,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:15:47,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:47,945 INFO L87 Difference]: Start difference. First operand 1479 states and 2479 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) [2025-03-08 07:15:47,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:47,972 INFO L93 Difference]: Finished difference Result 2771 states and 4329 transitions. [2025-03-08 07:15:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:15:47,973 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 [2025-03-08 07:15:47,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:47,978 INFO L225 Difference]: With dead ends: 2771 [2025-03-08 07:15:47,978 INFO L226 Difference]: Without dead ends: 2077 [2025-03-08 07:15:47,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:47,980 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 [2025-03-08 07:15:47,980 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] [2025-03-08 07:15:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2025-03-08 07:15:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2075. [2025-03-08 07:15:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2073 states have (on average 1.5894838398456343) internal successors, (3295), 2074 states have internal predecessors, (3295), 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) [2025-03-08 07:15:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3295 transitions. [2025-03-08 07:15:48,017 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3295 transitions. Word has length 48 [2025-03-08 07:15:48,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:48,017 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 3295 transitions. [2025-03-08 07:15:48,017 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) [2025-03-08 07:15:48,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3295 transitions. [2025-03-08 07:15:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 07:15:48,018 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:48,018 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] [2025-03-08 07:15:48,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 07:15:48,019 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:48,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash -492453955, now seen corresponding path program 1 times [2025-03-08 07:15:48,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:48,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207256721] [2025-03-08 07:15:48,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:48,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:48,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-08 07:15:48,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 07:15:48,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:48,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 07:15:48,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:48,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207256721] [2025-03-08 07:15:48,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207256721] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:48,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:48,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:15:48,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720208791] [2025-03-08 07:15:48,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:48,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:15:48,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:48,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:15:48,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:15:48,106 INFO L87 Difference]: Start difference. First operand 2075 states and 3295 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) [2025-03-08 07:15:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:48,237 INFO L93 Difference]: Finished difference Result 7165 states and 10484 transitions. [2025-03-08 07:15:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:15:48,237 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 [2025-03-08 07:15:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:48,254 INFO L225 Difference]: With dead ends: 7165 [2025-03-08 07:15:48,254 INFO L226 Difference]: Without dead ends: 6235 [2025-03-08 07:15:48,257 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 [2025-03-08 07:15:48,258 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 [2025-03-08 07:15:48,258 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] [2025-03-08 07:15:48,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2025-03-08 07:15:48,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 3187. [2025-03-08 07:15:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 3185 states have (on average 1.5218210361067503) internal successors, (4847), 3186 states have internal predecessors, (4847), 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) [2025-03-08 07:15:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 4847 transitions. [2025-03-08 07:15:48,340 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 4847 transitions. Word has length 65 [2025-03-08 07:15:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:48,341 INFO L471 AbstractCegarLoop]: Abstraction has 3187 states and 4847 transitions. [2025-03-08 07:15:48,341 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) [2025-03-08 07:15:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 4847 transitions. [2025-03-08 07:15:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 07:15:48,342 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:48,342 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] [2025-03-08 07:15:48,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 07:15:48,342 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:48,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:48,343 INFO L85 PathProgramCache]: Analyzing trace with hash -940399491, now seen corresponding path program 1 times [2025-03-08 07:15:48,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:48,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395145296] [2025-03-08 07:15:48,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:48,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:48,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-08 07:15:48,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 07:15:48,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:48,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 07:15:48,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:48,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395145296] [2025-03-08 07:15:48,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395145296] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:48,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:48,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:15:48,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41405881] [2025-03-08 07:15:48,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:48,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:15:48,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:48,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:15:48,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:15:48,441 INFO L87 Difference]: Start difference. First operand 3187 states and 4847 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) [2025-03-08 07:15:48,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:48,618 INFO L93 Difference]: Finished difference Result 8453 states and 12292 transitions. [2025-03-08 07:15:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:15:48,618 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 [2025-03-08 07:15:48,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:48,641 INFO L225 Difference]: With dead ends: 8453 [2025-03-08 07:15:48,641 INFO L226 Difference]: Without dead ends: 7163 [2025-03-08 07:15:48,646 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 [2025-03-08 07:15:48,646 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, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:15:48,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 3366 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:15:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7163 states. [2025-03-08 07:15:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7163 to 4939. [2025-03-08 07:15:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 4937 states have (on average 1.4759975693741139) internal successors, (7287), 4938 states have internal predecessors, (7287), 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) [2025-03-08 07:15:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 7287 transitions. [2025-03-08 07:15:48,810 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 7287 transitions. Word has length 65 [2025-03-08 07:15:48,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:48,810 INFO L471 AbstractCegarLoop]: Abstraction has 4939 states and 7287 transitions. [2025-03-08 07:15:48,810 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) [2025-03-08 07:15:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 7287 transitions. [2025-03-08 07:15:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 07:15:48,812 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:48,812 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] [2025-03-08 07:15:48,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 07:15:48,812 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:48,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash -525223619, now seen corresponding path program 1 times [2025-03-08 07:15:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291394364] [2025-03-08 07:15:48,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:48,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-08 07:15:48,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 07:15:48,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:48,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 07:15:48,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:48,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291394364] [2025-03-08 07:15:48,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291394364] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:48,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:48,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:15:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523801346] [2025-03-08 07:15:48,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:48,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:15:48,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:48,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:15:48,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:15:48,890 INFO L87 Difference]: Start difference. First operand 4939 states and 7287 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) [2025-03-08 07:15:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:49,033 INFO L93 Difference]: Finished difference Result 9741 states and 14092 transitions. [2025-03-08 07:15:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:15:49,034 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 [2025-03-08 07:15:49,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:49,049 INFO L225 Difference]: With dead ends: 9741 [2025-03-08 07:15:49,050 INFO L226 Difference]: Without dead ends: 8451 [2025-03-08 07:15:49,054 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 [2025-03-08 07:15:49,055 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 4671 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4671 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:15:49,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4671 Valid, 3336 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:15:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2025-03-08 07:15:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 6227. [2025-03-08 07:15:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6227 states, 6225 states have (on average 1.4597590361445782) internal successors, (9087), 6226 states have internal predecessors, (9087), 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) [2025-03-08 07:15:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 9087 transitions. [2025-03-08 07:15:49,185 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 9087 transitions. Word has length 65 [2025-03-08 07:15:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:49,186 INFO L471 AbstractCegarLoop]: Abstraction has 6227 states and 9087 transitions. [2025-03-08 07:15:49,186 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) [2025-03-08 07:15:49,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 9087 transitions. [2025-03-08 07:15:49,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 07:15:49,187 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:49,187 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] [2025-03-08 07:15:49,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 07:15:49,188 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:49,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1011941891, now seen corresponding path program 1 times [2025-03-08 07:15:49,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:49,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667579136] [2025-03-08 07:15:49,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:49,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:49,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-08 07:15:49,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 07:15:49,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:49,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 07:15:49,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:49,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667579136] [2025-03-08 07:15:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667579136] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:49,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:49,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:15:49,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768588886] [2025-03-08 07:15:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:49,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:15:49,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:49,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:15:49,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:15:49,276 INFO L87 Difference]: Start difference. First operand 6227 states and 9087 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) [2025-03-08 07:15:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:49,429 INFO L93 Difference]: Finished difference Result 11029 states and 15892 transitions. [2025-03-08 07:15:49,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:15:49,429 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 [2025-03-08 07:15:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:49,445 INFO L225 Difference]: With dead ends: 11029 [2025-03-08 07:15:49,446 INFO L226 Difference]: Without dead ends: 9739 [2025-03-08 07:15:49,451 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 [2025-03-08 07:15:49,451 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 4659 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:15:49,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4659 Valid, 3367 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:15:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9739 states. [2025-03-08 07:15:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9739 to 7515. [2025-03-08 07:15:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 7513 states have (on average 1.4490882470384667) internal successors, (10887), 7514 states have internal predecessors, (10887), 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) [2025-03-08 07:15:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 10887 transitions. [2025-03-08 07:15:49,663 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 10887 transitions. Word has length 65 [2025-03-08 07:15:49,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:49,663 INFO L471 AbstractCegarLoop]: Abstraction has 7515 states and 10887 transitions. [2025-03-08 07:15:49,663 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) [2025-03-08 07:15:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 10887 transitions. [2025-03-08 07:15:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 07:15:49,664 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:49,665 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] [2025-03-08 07:15:49,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 07:15:49,665 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:49,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash 78192369, now seen corresponding path program 1 times [2025-03-08 07:15:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849625002] [2025-03-08 07:15:49,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:49,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 07:15:49,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 07:15:49,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:49,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849625002] [2025-03-08 07:15:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849625002] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:49,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:49,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028694795] [2025-03-08 07:15:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:49,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:15:49,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:49,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:15:49,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:49,726 INFO L87 Difference]: Start difference. First operand 7515 states and 10887 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) [2025-03-08 07:15:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:49,802 INFO L93 Difference]: Finished difference Result 14247 states and 20305 transitions. [2025-03-08 07:15:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:15:49,803 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 [2025-03-08 07:15:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:49,813 INFO L225 Difference]: With dead ends: 14247 [2025-03-08 07:15:49,814 INFO L226 Difference]: Without dead ends: 7517 [2025-03-08 07:15:49,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:49,821 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 [2025-03-08 07:15:49,821 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] [2025-03-08 07:15:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2025-03-08 07:15:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 7515. [2025-03-08 07:15:49,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 7513 states have (on average 1.4325835218953813) internal successors, (10763), 7514 states have internal predecessors, (10763), 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) [2025-03-08 07:15:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 10763 transitions. [2025-03-08 07:15:49,960 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 10763 transitions. Word has length 66 [2025-03-08 07:15:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:49,961 INFO L471 AbstractCegarLoop]: Abstraction has 7515 states and 10763 transitions. [2025-03-08 07:15:49,961 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) [2025-03-08 07:15:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 10763 transitions. [2025-03-08 07:15:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 07:15:49,962 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:49,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:15:49,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 07:15:49,962 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:49,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1757813588, now seen corresponding path program 1 times [2025-03-08 07:15:49,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:49,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784897026] [2025-03-08 07:15:49,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:49,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:49,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 07:15:49,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 07:15:49,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:49,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:50,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:50,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784897026] [2025-03-08 07:15:50,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784897026] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:50,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:50,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:50,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80605461] [2025-03-08 07:15:50,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:50,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 07:15:50,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:50,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 07:15:50,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 07:15:50,060 INFO L87 Difference]: Start difference. First operand 7515 states and 10763 transitions. Second operand has 4 states, 4 states have (on average 16.75) 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) [2025-03-08 07:15:54,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:54,569 INFO L93 Difference]: Finished difference Result 9770 states and 15072 transitions. [2025-03-08 07:15:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:15:54,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) 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 [2025-03-08 07:15:54,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:54,581 INFO L225 Difference]: With dead ends: 9770 [2025-03-08 07:15:54,582 INFO L226 Difference]: Without dead ends: 9017 [2025-03-08 07:15:54,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:15:54,584 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 2351 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-03-08 07:15:54,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 779 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-03-08 07:15:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2025-03-08 07:15:54,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 9017. [2025-03-08 07:15:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 9015 states have (on average 1.4283971159179145) internal successors, (12877), 9016 states have internal predecessors, (12877), 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) [2025-03-08 07:15:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 12877 transitions. [2025-03-08 07:15:54,731 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 12877 transitions. Word has length 67 [2025-03-08 07:15:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:54,731 INFO L471 AbstractCegarLoop]: Abstraction has 9017 states and 12877 transitions. [2025-03-08 07:15:54,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) 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) [2025-03-08 07:15:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 12877 transitions. [2025-03-08 07:15:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 07:15:54,732 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:54,732 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] [2025-03-08 07:15:54,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 07:15:54,732 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:54,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:54,733 INFO L85 PathProgramCache]: Analyzing trace with hash -628102213, now seen corresponding path program 1 times [2025-03-08 07:15:54,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:54,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703017042] [2025-03-08 07:15:54,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:54,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:54,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 07:15:54,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 07:15:54,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:54,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:54,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:54,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703017042] [2025-03-08 07:15:54,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703017042] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:54,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:54,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395935921] [2025-03-08 07:15:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:54,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:15:54,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:54,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:15:54,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:54,824 INFO L87 Difference]: Start difference. First operand 9017 states and 12877 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) [2025-03-08 07:15:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:54,874 INFO L93 Difference]: Finished difference Result 11590 states and 16461 transitions. [2025-03-08 07:15:54,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:15:54,874 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 [2025-03-08 07:15:54,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:54,884 INFO L225 Difference]: With dead ends: 11590 [2025-03-08 07:15:54,885 INFO L226 Difference]: Without dead ends: 4860 [2025-03-08 07:15:54,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:54,891 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 [2025-03-08 07:15:54,891 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] [2025-03-08 07:15:54,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2025-03-08 07:15:54,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4852. [2025-03-08 07:15:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4850 states have (on average 1.4672164948453608) internal successors, (7116), 4851 states have internal predecessors, (7116), 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) [2025-03-08 07:15:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 7116 transitions. [2025-03-08 07:15:54,954 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 7116 transitions. Word has length 67 [2025-03-08 07:15:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:54,954 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 7116 transitions. [2025-03-08 07:15:54,954 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) [2025-03-08 07:15:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 7116 transitions. [2025-03-08 07:15:54,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-08 07:15:54,955 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:54,955 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] [2025-03-08 07:15:54,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 07:15:54,956 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:54,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash 667894008, now seen corresponding path program 1 times [2025-03-08 07:15:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:54,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892147612] [2025-03-08 07:15:54,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:54,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-08 07:15:54,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-08 07:15:54,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:54,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:55,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:55,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892147612] [2025-03-08 07:15:55,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892147612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:55,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:55,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:55,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419895208] [2025-03-08 07:15:55,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:55,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:15:55,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:55,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:15:55,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:55,028 INFO L87 Difference]: Start difference. First operand 4852 states and 7116 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) [2025-03-08 07:15:55,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:55,059 INFO L93 Difference]: Finished difference Result 6132 states and 8878 transitions. [2025-03-08 07:15:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:15:55,059 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 [2025-03-08 07:15:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:55,065 INFO L225 Difference]: With dead ends: 6132 [2025-03-08 07:15:55,066 INFO L226 Difference]: Without dead ends: 3578 [2025-03-08 07:15:55,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:55,069 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 [2025-03-08 07:15:55,069 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] [2025-03-08 07:15:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2025-03-08 07:15:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3576. [2025-03-08 07:15:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3574 states have (on average 1.4924454392837156) internal successors, (5334), 3575 states have internal predecessors, (5334), 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) [2025-03-08 07:15:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 5334 transitions. [2025-03-08 07:15:55,112 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 5334 transitions. Word has length 68 [2025-03-08 07:15:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:55,112 INFO L471 AbstractCegarLoop]: Abstraction has 3576 states and 5334 transitions. [2025-03-08 07:15:55,112 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) [2025-03-08 07:15:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 5334 transitions. [2025-03-08 07:15:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 07:15:55,113 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:55,113 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] [2025-03-08 07:15:55,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 07:15:55,114 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:55,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:55,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1675746273, now seen corresponding path program 1 times [2025-03-08 07:15:55,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:55,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968298403] [2025-03-08 07:15:55,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:55,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:55,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 07:15:55,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 07:15:55,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:55,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:55,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:55,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968298403] [2025-03-08 07:15:55,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968298403] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:15:55,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:15:55,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:15:55,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093566415] [2025-03-08 07:15:55,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:15:55,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:15:55,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:55,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:15:55,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:55,178 INFO L87 Difference]: Start difference. First operand 3576 states and 5334 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) [2025-03-08 07:15:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:55,203 INFO L93 Difference]: Finished difference Result 4218 states and 6205 transitions. [2025-03-08 07:15:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:15:55,203 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 [2025-03-08 07:15:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:55,208 INFO L225 Difference]: With dead ends: 4218 [2025-03-08 07:15:55,208 INFO L226 Difference]: Without dead ends: 2940 [2025-03-08 07:15:55,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:15:55,210 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 [2025-03-08 07:15:55,210 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] [2025-03-08 07:15:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2025-03-08 07:15:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2938. [2025-03-08 07:15:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.5170299727520435) internal successors, (4454), 2937 states have internal predecessors, (4454), 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) [2025-03-08 07:15:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4454 transitions. [2025-03-08 07:15:55,239 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4454 transitions. Word has length 70 [2025-03-08 07:15:55,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:55,239 INFO L471 AbstractCegarLoop]: Abstraction has 2938 states and 4454 transitions. [2025-03-08 07:15:55,240 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) [2025-03-08 07:15:55,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4454 transitions. [2025-03-08 07:15:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-08 07:15:55,240 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:55,240 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] [2025-03-08 07:15:55,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 07:15:55,241 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:55,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash 642136166, now seen corresponding path program 1 times [2025-03-08 07:15:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:55,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377405437] [2025-03-08 07:15:55,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:55,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:55,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-08 07:15:55,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-08 07:15:55,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:55,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:55,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:55,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377405437] [2025-03-08 07:15:55,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377405437] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:15:55,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314379789] [2025-03-08 07:15:55,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:55,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:15:55,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:15:55,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:15:55,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 07:15:55,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-08 07:15:55,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-08 07:15:55,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:55,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:55,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 07:15:55,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:15:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:55,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:15:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314379789] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:15:56,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:15:56,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 19 [2025-03-08 07:15:56,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152369531] [2025-03-08 07:15:56,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:15:56,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 07:15:56,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:56,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 07:15:56,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2025-03-08 07:15:56,083 INFO L87 Difference]: Start difference. First operand 2938 states and 4454 transitions. Second operand has 19 states, 19 states have (on average 10.68421052631579) internal successors, (203), 19 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) [2025-03-08 07:15:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:57,627 INFO L93 Difference]: Finished difference Result 8007 states and 11091 transitions. [2025-03-08 07:15:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-03-08 07:15:57,627 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.68421052631579) internal successors, (203), 19 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 72 [2025-03-08 07:15:57,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:57,645 INFO L225 Difference]: With dead ends: 8007 [2025-03-08 07:15:57,645 INFO L226 Difference]: Without dead ends: 7293 [2025-03-08 07:15:57,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=804, Invalid=3486, Unknown=0, NotChecked=0, Total=4290 [2025-03-08 07:15:57,652 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 13433 mSDsluCounter, 9300 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13433 SdHoareTripleChecker+Valid, 10833 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 07:15:57,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13433 Valid, 10833 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 07:15:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7293 states. [2025-03-08 07:15:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7293 to 6705. [2025-03-08 07:15:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6705 states, 6703 states have (on average 1.3875876473220945) internal successors, (9301), 6704 states have internal predecessors, (9301), 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) [2025-03-08 07:15:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 9301 transitions. [2025-03-08 07:15:57,768 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 9301 transitions. Word has length 72 [2025-03-08 07:15:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:15:57,769 INFO L471 AbstractCegarLoop]: Abstraction has 6705 states and 9301 transitions. [2025-03-08 07:15:57,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.68421052631579) internal successors, (203), 19 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) [2025-03-08 07:15:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 9301 transitions. [2025-03-08 07:15:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-08 07:15:57,770 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:15:57,770 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] [2025-03-08 07:15:57,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 07:15:57,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:15:57,978 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:15:57,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:15:57,978 INFO L85 PathProgramCache]: Analyzing trace with hash 542316651, now seen corresponding path program 1 times [2025-03-08 07:15:57,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:15:57,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164029498] [2025-03-08 07:15:57,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:57,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:15:57,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 07:15:58,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 07:15:58,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:58,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:58,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:15:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164029498] [2025-03-08 07:15:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164029498] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:15:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639635443] [2025-03-08 07:15:58,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:15:58,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:15:58,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:15:58,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:15:58,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 07:15:58,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 07:15:58,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 07:15:58,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:15:58,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:15:58,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 07:15:58,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:15:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:58,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:15:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:15:59,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639635443] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:15:59,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:15:59,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-03-08 07:15:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045618970] [2025-03-08 07:15:59,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:15:59,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 07:15:59,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:15:59,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 07:15:59,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2025-03-08 07:15:59,380 INFO L87 Difference]: Start difference. First operand 6705 states and 9301 transitions. Second operand has 23 states, 23 states have (on average 7.608695652173913) internal successors, (175), 22 states have internal predecessors, (175), 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) [2025-03-08 07:15:59,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:15:59,862 INFO L93 Difference]: Finished difference Result 15617 states and 20904 transitions. [2025-03-08 07:15:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 07:15:59,863 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.608695652173913) internal successors, (175), 22 states have internal predecessors, (175), 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 [2025-03-08 07:15:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:15:59,880 INFO L225 Difference]: With dead ends: 15617 [2025-03-08 07:15:59,880 INFO L226 Difference]: Without dead ends: 11505 [2025-03-08 07:15:59,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=839, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 07:15:59,888 INFO L435 NwaCegarLoop]: 1498 mSDtfsCounter, 13934 mSDsluCounter, 3161 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13934 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 07:15:59,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13934 Valid, 4659 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 07:15:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11505 states. [2025-03-08 07:16:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11505 to 11353. [2025-03-08 07:16:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11353 states, 11351 states have (on average 1.3341555810060788) internal successors, (15144), 11352 states have internal predecessors, (15144), 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) [2025-03-08 07:16:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11353 states to 11353 states and 15144 transitions. [2025-03-08 07:16:00,086 INFO L78 Accepts]: Start accepts. Automaton has 11353 states and 15144 transitions. Word has length 73 [2025-03-08 07:16:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:16:00,086 INFO L471 AbstractCegarLoop]: Abstraction has 11353 states and 15144 transitions. [2025-03-08 07:16:00,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.608695652173913) internal successors, (175), 22 states have internal predecessors, (175), 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) [2025-03-08 07:16:00,086 INFO L276 IsEmpty]: Start isEmpty. Operand 11353 states and 15144 transitions. [2025-03-08 07:16:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-08 07:16:00,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:16:00,088 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] [2025-03-08 07:16:00,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 07:16:00,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-08 07:16:00,288 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:16:00,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:16:00,289 INFO L85 PathProgramCache]: Analyzing trace with hash -893248341, now seen corresponding path program 1 times [2025-03-08 07:16:00,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:16:00,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018890385] [2025-03-08 07:16:00,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:16:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:16:00,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 07:16:00,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 07:16:00,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:16:00,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:16:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:16:01,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:16:01,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018890385] [2025-03-08 07:16:01,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018890385] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:16:01,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275025789] [2025-03-08 07:16:01,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:16:01,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:16:01,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:16:01,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:16:01,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 07:16:01,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 07:16:01,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 07:16:01,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:16:01,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:16:01,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 07:16:01,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:16:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:16:01,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:16:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:16:01,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275025789] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:16:01,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:16:01,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2025-03-08 07:16:01,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669965790] [2025-03-08 07:16:01,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:16:01,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-08 07:16:01,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:16:01,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-08 07:16:01,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2025-03-08 07:16:01,947 INFO L87 Difference]: Start difference. First operand 11353 states and 15144 transitions. Second operand has 26 states, 26 states have (on average 7.1923076923076925) internal successors, (187), 25 states have internal predecessors, (187), 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) [2025-03-08 07:16:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:16:02,639 INFO L93 Difference]: Finished difference Result 29799 states and 38839 transitions. [2025-03-08 07:16:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 07:16:02,639 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.1923076923076925) internal successors, (187), 25 states have internal predecessors, (187), 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 [2025-03-08 07:16:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:16:02,662 INFO L225 Difference]: With dead ends: 29799 [2025-03-08 07:16:02,662 INFO L226 Difference]: Without dead ends: 21195 [2025-03-08 07:16:02,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=293, Invalid=1113, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 07:16:02,675 INFO L435 NwaCegarLoop]: 1498 mSDtfsCounter, 12024 mSDsluCounter, 6211 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12024 SdHoareTripleChecker+Valid, 7709 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 07:16:02,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12024 Valid, 7709 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 07:16:02,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21195 states. [2025-03-08 07:16:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21195 to 20911. [2025-03-08 07:16:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20911 states, 20909 states have (on average 1.2925056195896505) internal successors, (27025), 20910 states have internal predecessors, (27025), 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) [2025-03-08 07:16:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20911 states to 20911 states and 27025 transitions. [2025-03-08 07:16:03,233 INFO L78 Accepts]: Start accepts. Automaton has 20911 states and 27025 transitions. Word has length 73 [2025-03-08 07:16:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:16:03,233 INFO L471 AbstractCegarLoop]: Abstraction has 20911 states and 27025 transitions. [2025-03-08 07:16:03,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.1923076923076925) internal successors, (187), 25 states have internal predecessors, (187), 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) [2025-03-08 07:16:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 20911 states and 27025 transitions. [2025-03-08 07:16:03,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-08 07:16:03,235 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:16:03,235 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] [2025-03-08 07:16:03,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 07:16:03,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:16:03,436 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:16:03,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:16:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1204747137, now seen corresponding path program 1 times [2025-03-08 07:16:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:16:03,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874733099] [2025-03-08 07:16:03,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:16:03,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:16:03,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-08 07:16:03,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-08 07:16:03,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:16:03,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:16:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:16:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:16:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874733099] [2025-03-08 07:16:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874733099] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:16:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204724929] [2025-03-08 07:16:03,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:16:03,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:16:03,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:16:03,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:16:03,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 07:16:03,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-08 07:16:03,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-08 07:16:03,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:16:03,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:16:03,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-08 07:16:03,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:16:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:16:06,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:16:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:16:08,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204724929] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:16:08,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:16:08,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 20] total 44 [2025-03-08 07:16:08,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036147567] [2025-03-08 07:16:08,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:16:08,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-08 07:16:08,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:16:08,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-08 07:16:08,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1573, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 07:16:08,428 INFO L87 Difference]: Start difference. First operand 20911 states and 27025 transitions. Second operand has 44 states, 44 states have (on average 4.318181818181818) internal successors, (190), 44 states have internal predecessors, (190), 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) [2025-03-08 07:16:25,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:16:25,866 INFO L93 Difference]: Finished difference Result 90637 states and 115345 transitions. [2025-03-08 07:16:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2025-03-08 07:16:25,867 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.318181818181818) internal successors, (190), 44 states have internal predecessors, (190), 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 [2025-03-08 07:16:25,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:16:25,935 INFO L225 Difference]: With dead ends: 90637 [2025-03-08 07:16:25,935 INFO L226 Difference]: Without dead ends: 72843 [2025-03-08 07:16:25,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15354 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=7208, Invalid=31404, Unknown=0, NotChecked=0, Total=38612 [2025-03-08 07:16:25,956 INFO L435 NwaCegarLoop]: 1602 mSDtfsCounter, 19025 mSDsluCounter, 14357 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19025 SdHoareTripleChecker+Valid, 15959 SdHoareTripleChecker+Invalid, 3023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-08 07:16:25,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19025 Valid, 15959 Invalid, 3023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-08 07:16:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72843 states. [2025-03-08 07:16:27,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72843 to 40959. [2025-03-08 07:16:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40959 states, 40957 states have (on average 1.2726762214029348) internal successors, (52125), 40958 states have internal predecessors, (52125), 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) [2025-03-08 07:16:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40959 states to 40959 states and 52125 transitions. [2025-03-08 07:16:27,348 INFO L78 Accepts]: Start accepts. Automaton has 40959 states and 52125 transitions. Word has length 74 [2025-03-08 07:16:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:16:27,349 INFO L471 AbstractCegarLoop]: Abstraction has 40959 states and 52125 transitions. [2025-03-08 07:16:27,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.318181818181818) internal successors, (190), 44 states have internal predecessors, (190), 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) [2025-03-08 07:16:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 40959 states and 52125 transitions. [2025-03-08 07:16:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-08 07:16:27,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:16:27,350 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] [2025-03-08 07:16:27,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 07:16:27,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:16:27,551 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:16:27,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:16:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1881637423, now seen corresponding path program 1 times [2025-03-08 07:16:27,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:16:27,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145618778] [2025-03-08 07:16:27,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:16:27,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:16:27,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-08 07:16:27,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-08 07:16:27,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:16:27,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:16:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:16:28,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:16:28,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145618778] [2025-03-08 07:16:28,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145618778] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:16:28,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533098204] [2025-03-08 07:16:28,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:16:28,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:16:28,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:16:28,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:16:28,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 07:16:28,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-08 07:16:28,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-08 07:16:28,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:16:28,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:16:28,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-08 07:16:28,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:16:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:16:31,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:16:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:16:34,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533098204] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:16:34,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:16:34,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 23] total 61 [2025-03-08 07:16:34,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367425351] [2025-03-08 07:16:34,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:16:34,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-03-08 07:16:34,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:16:34,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-03-08 07:16:34,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=3331, Unknown=0, NotChecked=0, Total=3660 [2025-03-08 07:16:34,545 INFO L87 Difference]: Start difference. First operand 40959 states and 52125 transitions. Second operand has 61 states, 61 states have (on average 3.2295081967213113) internal successors, (197), 61 states have internal predecessors, (197), 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)