./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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.3.ufo.BOUNDED-6.pals+Problem12_label05.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 0ae5a79d1f1baf1f14454f65e56a4602af56e479a8b0432aa823cab3749bdff6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:33:47,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:33:48,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:33:48,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:33:48,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:33:48,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:33:48,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:33:48,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:33:48,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:33:48,064 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:33:48,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:33:48,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:33:48,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:33:48,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:33:48,065 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:33:48,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:33:48,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:33:48,066 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:33:48,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:33:48,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:33:48,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:33:48,069 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:33:48,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:33:48,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:33:48,069 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:33:48,069 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:33:48,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:33:48,070 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:33:48,070 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:33:48,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:33:48,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:33:48,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:33:48,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:33:48,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:33:48,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:33:48,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:33:48,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:33:48,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:33:48,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:33:48,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:33:48,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:33:48,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:33:48,076 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ae5a79d1f1baf1f14454f65e56a4602af56e479a8b0432aa823cab3749bdff6 [2024-11-16 09:33:48,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:33:48,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:33:48,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:33:48,320 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:33:48,321 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:33:48,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-16 09:33:49,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:33:49,924 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:33:49,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-16 09:33:49,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd3371e2e/e046fee3da0c4b01a2c339eb7ec7c409/FLAGac9ee46a4 [2024-11-16 09:33:49,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd3371e2e/e046fee3da0c4b01a2c339eb7ec7c409 [2024-11-16 09:33:49,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:33:49,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:33:49,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:33:49,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:33:49,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:33:49,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:33:49" (1/1) ... [2024-11-16 09:33:49,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36dc3507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:49, skipping insertion in model container [2024-11-16 09:33:49,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:33:49" (1/1) ... [2024-11-16 09:33:50,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:33:50,339 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.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2024-11-16 09:33:50,389 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.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2024-11-16 09:33:50,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:33:50,924 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:33:50,953 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.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2024-11-16 09:33:50,964 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.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2024-11-16 09:33:51,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:33:51,298 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:33:51,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51 WrapperNode [2024-11-16 09:33:51,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:33:51,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:33:51,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:33:51,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:33:51,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,617 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-11-16 09:33:51,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:33:51,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:33:51,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:33:51,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:33:51,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,684 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,789 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]. [2024-11-16 09:33:51,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,918 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:51,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:52,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:33:52,030 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:33:52,031 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:33:52,031 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:33:52,032 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (1/1) ... [2024-11-16 09:33:52,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:33:52,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:52,065 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) [2024-11-16 09:33:52,070 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 [2024-11-16 09:33:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:33:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:33:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:33:52,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:33:52,194 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:33:52,197 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:33:55,708 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1982: havoc calculate_output_#t~ret30#1; [2024-11-16 09:33:55,712 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3461: havoc calculate_output2_#t~ret31#1; [2024-11-16 09:33:55,712 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4951: havoc calculate_output3_#t~ret32#1; [2024-11-16 09:33:55,856 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-11-16 09:33:55,856 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:33:55,892 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:33:55,896 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:33:55,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:55 BoogieIcfgContainer [2024-11-16 09:33:55,897 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:33:55,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:33:55,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:33:55,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:33:55,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:33:49" (1/3) ... [2024-11-16 09:33:55,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eea19ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:55, skipping insertion in model container [2024-11-16 09:33:55,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:51" (2/3) ... [2024-11-16 09:33:55,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eea19ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:55, skipping insertion in model container [2024-11-16 09:33:55,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:55" (3/3) ... [2024-11-16 09:33:55,905 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-16 09:33:55,921 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:33:55,921 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:33:56,007 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:33:56,013 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;@7553247d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:33:56,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:33:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 879 states, 876 states have (on average 1.8995433789954337) internal successors, (1664), 878 states have internal predecessors, (1664), 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) [2024-11-16 09:33:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 09:33:56,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:56,028 INFO L215 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] [2024-11-16 09:33:56,028 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:56,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash 159669486, now seen corresponding path program 1 times [2024-11-16 09:33:56,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:56,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570976997] [2024-11-16 09:33:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:56,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:56,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:56,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570976997] [2024-11-16 09:33:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570976997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:56,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:56,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:33:56,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122573157] [2024-11-16 09:33:56,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:56,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:33:56,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:33:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:33:56,252 INFO L87 Difference]: Start difference. First operand has 879 states, 876 states have (on average 1.8995433789954337) internal successors, (1664), 878 states have internal predecessors, (1664), 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) [2024-11-16 09:33:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:56,321 INFO L93 Difference]: Finished difference Result 1734 states and 3286 transitions. [2024-11-16 09:33:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:33:56,323 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 [2024-11-16 09:33:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:56,336 INFO L225 Difference]: With dead ends: 1734 [2024-11-16 09:33:56,336 INFO L226 Difference]: Without dead ends: 811 [2024-11-16 09:33:56,342 INFO L431 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 [2024-11-16 09:33:56,345 INFO L432 NwaCegarLoop]: 1596 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, 1596 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 [2024-11-16 09:33:56,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:56,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2024-11-16 09:33:56,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 811. [2024-11-16 09:33:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 809 states have (on average 1.8899876390605685) internal successors, (1529), 810 states have internal predecessors, (1529), 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) [2024-11-16 09:33:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1529 transitions. [2024-11-16 09:33:56,418 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1529 transitions. Word has length 22 [2024-11-16 09:33:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:56,419 INFO L471 AbstractCegarLoop]: Abstraction has 811 states and 1529 transitions. [2024-11-16 09:33:56,419 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) [2024-11-16 09:33:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1529 transitions. [2024-11-16 09:33:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 09:33:56,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:56,420 INFO L215 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] [2024-11-16 09:33:56,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:33:56,421 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:56,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:56,421 INFO L85 PathProgramCache]: Analyzing trace with hash -350864691, now seen corresponding path program 1 times [2024-11-16 09:33:56,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:56,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325293651] [2024-11-16 09:33:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:56,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325293651] [2024-11-16 09:33:56,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325293651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:56,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:56,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:56,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968847246] [2024-11-16 09:33:56,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:56,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:56,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:56,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:56,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:56,600 INFO L87 Difference]: Start difference. First operand 811 states and 1529 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) [2024-11-16 09:33:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:56,674 INFO L93 Difference]: Finished difference Result 881 states and 1633 transitions. [2024-11-16 09:33:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:56,680 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 [2024-11-16 09:33:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:56,686 INFO L225 Difference]: With dead ends: 881 [2024-11-16 09:33:56,686 INFO L226 Difference]: Without dead ends: 844 [2024-11-16 09:33:56,687 INFO L431 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 [2024-11-16 09:33:56,688 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 49 mSDsluCounter, 4553 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 6078 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:56,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 6078 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:56,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-16 09:33:56,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 811. [2024-11-16 09:33:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 809 states have (on average 1.8702101359703338) internal successors, (1513), 810 states have internal predecessors, (1513), 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) [2024-11-16 09:33:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1513 transitions. [2024-11-16 09:33:56,711 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1513 transitions. Word has length 22 [2024-11-16 09:33:56,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:56,712 INFO L471 AbstractCegarLoop]: Abstraction has 811 states and 1513 transitions. [2024-11-16 09:33:56,712 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) [2024-11-16 09:33:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1513 transitions. [2024-11-16 09:33:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 09:33:56,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:56,713 INFO L215 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] [2024-11-16 09:33:56,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:33:56,714 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:56,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash 644860677, now seen corresponding path program 1 times [2024-11-16 09:33:56,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:56,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900641991] [2024-11-16 09:33:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:56,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:56,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900641991] [2024-11-16 09:33:56,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900641991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:56,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:56,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:56,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143265375] [2024-11-16 09:33:56,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:56,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:56,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:56,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:56,870 INFO L87 Difference]: Start difference. First operand 811 states and 1513 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-16 09:33:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:57,018 INFO L93 Difference]: Finished difference Result 1009 states and 1813 transitions. [2024-11-16 09:33:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:33:57,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2024-11-16 09:33:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:57,026 INFO L225 Difference]: With dead ends: 1009 [2024-11-16 09:33:57,026 INFO L226 Difference]: Without dead ends: 976 [2024-11-16 09:33:57,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:57,027 INFO L432 NwaCegarLoop]: 1509 mSDtfsCounter, 4611 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:57,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4611 Valid, 1897 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:33:57,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-11-16 09:33:57,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 841. [2024-11-16 09:33:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 839 states have (on average 1.8581644815256257) internal successors, (1559), 840 states have internal predecessors, (1559), 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) [2024-11-16 09:33:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1559 transitions. [2024-11-16 09:33:57,056 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1559 transitions. Word has length 37 [2024-11-16 09:33:57,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:57,057 INFO L471 AbstractCegarLoop]: Abstraction has 841 states and 1559 transitions. [2024-11-16 09:33:57,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-16 09:33:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1559 transitions. [2024-11-16 09:33:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 09:33:57,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:57,060 INFO L215 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] [2024-11-16 09:33:57,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:33:57,060 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:57,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash -769786777, now seen corresponding path program 1 times [2024-11-16 09:33:57,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:57,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312854096] [2024-11-16 09:33:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:57,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:57,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312854096] [2024-11-16 09:33:57,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312854096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:57,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:57,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:57,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247074201] [2024-11-16 09:33:57,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:57,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:57,253 INFO L87 Difference]: Start difference. First operand 841 states and 1559 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-16 09:33:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:57,323 INFO L93 Difference]: Finished difference Result 907 states and 1657 transitions. [2024-11-16 09:33:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:57,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2024-11-16 09:33:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:57,326 INFO L225 Difference]: With dead ends: 907 [2024-11-16 09:33:57,327 INFO L226 Difference]: Without dead ends: 844 [2024-11-16 09:33:57,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:33:57,330 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 2954 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2954 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:57,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2954 Valid, 1603 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-16 09:33:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 841. [2024-11-16 09:33:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 839 states have (on average 1.8569725864123956) internal successors, (1558), 840 states have internal predecessors, (1558), 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) [2024-11-16 09:33:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1558 transitions. [2024-11-16 09:33:57,348 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1558 transitions. Word has length 39 [2024-11-16 09:33:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:57,349 INFO L471 AbstractCegarLoop]: Abstraction has 841 states and 1558 transitions. [2024-11-16 09:33:57,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-16 09:33:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1558 transitions. [2024-11-16 09:33:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 09:33:57,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:57,352 INFO L215 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] [2024-11-16 09:33:57,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:33:57,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:57,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:57,353 INFO L85 PathProgramCache]: Analyzing trace with hash -664734402, now seen corresponding path program 1 times [2024-11-16 09:33:57,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:57,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113063922] [2024-11-16 09:33:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:57,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:57,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:57,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113063922] [2024-11-16 09:33:57,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113063922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:57,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:57,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:57,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83186848] [2024-11-16 09:33:57,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:57,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:57,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:57,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:57,419 INFO L87 Difference]: Start difference. First operand 841 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-16 09:33:57,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:57,444 INFO L93 Difference]: Finished difference Result 955 states and 1728 transitions. [2024-11-16 09:33:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:57,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-11-16 09:33:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:57,447 INFO L225 Difference]: With dead ends: 955 [2024-11-16 09:33:57,448 INFO L226 Difference]: Without dead ends: 892 [2024-11-16 09:33:57,449 INFO L431 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 [2024-11-16 09:33:57,449 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 1470 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1564 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 [2024-11-16 09:33:57,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1564 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2024-11-16 09:33:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 889. [2024-11-16 09:33:57,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 887 states have (on average 1.8354002254791433) internal successors, (1628), 888 states have internal predecessors, (1628), 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) [2024-11-16 09:33:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1628 transitions. [2024-11-16 09:33:57,468 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1628 transitions. Word has length 40 [2024-11-16 09:33:57,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:57,469 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 1628 transitions. [2024-11-16 09:33:57,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-16 09:33:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1628 transitions. [2024-11-16 09:33:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:57,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:57,472 INFO L215 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] [2024-11-16 09:33:57,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:33:57,472 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:57,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:57,473 INFO L85 PathProgramCache]: Analyzing trace with hash 307573737, now seen corresponding path program 1 times [2024-11-16 09:33:57,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:57,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255865852] [2024-11-16 09:33:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:57,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:57,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:57,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255865852] [2024-11-16 09:33:57,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255865852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:57,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:57,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:57,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576274387] [2024-11-16 09:33:57,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:57,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:57,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:57,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:57,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:57,534 INFO L87 Difference]: Start difference. First operand 889 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-16 09:33:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:57,563 INFO L93 Difference]: Finished difference Result 1010 states and 1808 transitions. [2024-11-16 09:33:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:57,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-11-16 09:33:57,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:57,568 INFO L225 Difference]: With dead ends: 1010 [2024-11-16 09:33:57,569 INFO L226 Difference]: Without dead ends: 947 [2024-11-16 09:33:57,569 INFO L431 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 [2024-11-16 09:33:57,570 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 1480 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1598 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 [2024-11-16 09:33:57,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1598 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2024-11-16 09:33:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 944. [2024-11-16 09:33:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 942 states have (on average 1.813163481953291) internal successors, (1708), 943 states have internal predecessors, (1708), 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) [2024-11-16 09:33:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1708 transitions. [2024-11-16 09:33:57,589 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1708 transitions. Word has length 41 [2024-11-16 09:33:57,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:57,590 INFO L471 AbstractCegarLoop]: Abstraction has 944 states and 1708 transitions. [2024-11-16 09:33:57,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-16 09:33:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1708 transitions. [2024-11-16 09:33:57,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:57,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:57,591 INFO L215 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] [2024-11-16 09:33:57,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:33:57,591 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:57,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash 293123881, now seen corresponding path program 1 times [2024-11-16 09:33:57,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:57,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617550238] [2024-11-16 09:33:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:57,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:57,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:57,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617550238] [2024-11-16 09:33:57,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617550238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:57,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:57,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:57,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663737323] [2024-11-16 09:33:57,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:57,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:57,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:57,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:57,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:57,631 INFO L87 Difference]: Start difference. First operand 944 states and 1708 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-16 09:33:57,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:57,652 INFO L93 Difference]: Finished difference Result 1246 states and 2150 transitions. [2024-11-16 09:33:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:57,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-11-16 09:33:57,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:57,656 INFO L225 Difference]: With dead ends: 1246 [2024-11-16 09:33:57,656 INFO L226 Difference]: Without dead ends: 1083 [2024-11-16 09:33:57,658 INFO L431 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 [2024-11-16 09:33:57,659 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1604 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 [2024-11-16 09:33:57,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1604 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2024-11-16 09:33:57,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1080. [2024-11-16 09:33:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1078 states have (on average 1.7625231910946197) internal successors, (1900), 1079 states have internal predecessors, (1900), 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) [2024-11-16 09:33:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1900 transitions. [2024-11-16 09:33:57,678 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1900 transitions. Word has length 41 [2024-11-16 09:33:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:57,678 INFO L471 AbstractCegarLoop]: Abstraction has 1080 states and 1900 transitions. [2024-11-16 09:33:57,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-16 09:33:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1900 transitions. [2024-11-16 09:33:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:57,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:57,680 INFO L215 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] [2024-11-16 09:33:57,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:33:57,680 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:57,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1910240663, now seen corresponding path program 1 times [2024-11-16 09:33:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:57,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132409206] [2024-11-16 09:33:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:57,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:57,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132409206] [2024-11-16 09:33:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132409206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:57,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:57,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664623483] [2024-11-16 09:33:57,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:57,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:57,756 INFO L87 Difference]: Start difference. First operand 1080 states and 1900 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-16 09:33:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:57,781 INFO L93 Difference]: Finished difference Result 1630 states and 2684 transitions. [2024-11-16 09:33:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:57,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-11-16 09:33:57,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:57,788 INFO L225 Difference]: With dead ends: 1630 [2024-11-16 09:33:57,788 INFO L226 Difference]: Without dead ends: 1331 [2024-11-16 09:33:57,789 INFO L431 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 [2024-11-16 09:33:57,791 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 1476 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1606 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 [2024-11-16 09:33:57,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1606 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-11-16 09:33:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1328. [2024-11-16 09:33:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1326 states have (on average 1.6862745098039216) internal successors, (2236), 1327 states have internal predecessors, (2236), 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) [2024-11-16 09:33:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2236 transitions. [2024-11-16 09:33:57,820 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2236 transitions. Word has length 41 [2024-11-16 09:33:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:57,820 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2236 transitions. [2024-11-16 09:33:57,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-16 09:33:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2236 transitions. [2024-11-16 09:33:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:57,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:57,821 INFO L215 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] [2024-11-16 09:33:57,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:33:57,821 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:57,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:57,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1860449578, now seen corresponding path program 1 times [2024-11-16 09:33:57,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:57,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063626442] [2024-11-16 09:33:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:57,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:57,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063626442] [2024-11-16 09:33:57,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063626442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:57,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:57,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:33:57,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459145320] [2024-11-16 09:33:57,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:57,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:33:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:33:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:57,997 INFO L87 Difference]: Start difference. First operand 1328 states and 2236 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2024-11-16 09:33:58,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:58,059 INFO L93 Difference]: Finished difference Result 1379 states and 2302 transitions. [2024-11-16 09:33:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 09:33:58,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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 41 [2024-11-16 09:33:58,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:58,065 INFO L225 Difference]: With dead ends: 1379 [2024-11-16 09:33:58,066 INFO L226 Difference]: Without dead ends: 1376 [2024-11-16 09:33:58,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:58,067 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 0 mSDsluCounter, 9026 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10533 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:58,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10533 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-16 09:33:58,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2024-11-16 09:33:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1374 states have (on average 1.6593886462882097) internal successors, (2280), 1375 states have internal predecessors, (2280), 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) [2024-11-16 09:33:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2280 transitions. [2024-11-16 09:33:58,091 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2280 transitions. Word has length 41 [2024-11-16 09:33:58,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:58,091 INFO L471 AbstractCegarLoop]: Abstraction has 1376 states and 2280 transitions. [2024-11-16 09:33:58,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2024-11-16 09:33:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2280 transitions. [2024-11-16 09:33:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:58,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:58,093 INFO L215 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] [2024-11-16 09:33:58,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:33:58,093 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:58,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:58,096 INFO L85 PathProgramCache]: Analyzing trace with hash -636110161, now seen corresponding path program 1 times [2024-11-16 09:33:58,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:58,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204695508] [2024-11-16 09:33:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:58,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:58,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:58,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204695508] [2024-11-16 09:33:58,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204695508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:58,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:58,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:58,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603016495] [2024-11-16 09:33:58,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:58,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:58,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:58,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:58,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:58,190 INFO L87 Difference]: Start difference. First operand 1376 states and 2280 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-11-16 09:33:58,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:58,277 INFO L93 Difference]: Finished difference Result 3144 states and 4692 transitions. [2024-11-16 09:33:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:58,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 58 [2024-11-16 09:33:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:58,288 INFO L225 Difference]: With dead ends: 3144 [2024-11-16 09:33:58,288 INFO L226 Difference]: Without dead ends: 2709 [2024-11-16 09:33:58,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:58,290 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 3055 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:58,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3055 Valid, 3181 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:58,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2024-11-16 09:33:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 1892. [2024-11-16 09:33:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1890 states have (on average 1.5746031746031746) internal successors, (2976), 1891 states have internal predecessors, (2976), 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) [2024-11-16 09:33:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2976 transitions. [2024-11-16 09:33:58,334 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2976 transitions. Word has length 58 [2024-11-16 09:33:58,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:58,335 INFO L471 AbstractCegarLoop]: Abstraction has 1892 states and 2976 transitions. [2024-11-16 09:33:58,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-11-16 09:33:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2976 transitions. [2024-11-16 09:33:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:58,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:58,336 INFO L215 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] [2024-11-16 09:33:58,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:33:58,337 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:58,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash -650560017, now seen corresponding path program 1 times [2024-11-16 09:33:58,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:58,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101570132] [2024-11-16 09:33:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:33:58,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:58,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101570132] [2024-11-16 09:33:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101570132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:58,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:58,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951718855] [2024-11-16 09:33:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:58,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:58,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:58,435 INFO L87 Difference]: Start difference. First operand 1892 states and 2976 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-16 09:33:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:58,524 INFO L93 Difference]: Finished difference Result 3736 states and 5496 transitions. [2024-11-16 09:33:58,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:58,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 58 [2024-11-16 09:33:58,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:58,536 INFO L225 Difference]: With dead ends: 3736 [2024-11-16 09:33:58,536 INFO L226 Difference]: Without dead ends: 3141 [2024-11-16 09:33:58,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:58,540 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 3052 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:58,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 3179 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:58,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2024-11-16 09:33:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 2700. [2024-11-16 09:33:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2698 states have (on average 1.5063009636767977) internal successors, (4064), 2699 states have internal predecessors, (4064), 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) [2024-11-16 09:33:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 4064 transitions. [2024-11-16 09:33:58,597 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 4064 transitions. Word has length 58 [2024-11-16 09:33:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:58,598 INFO L471 AbstractCegarLoop]: Abstraction has 2700 states and 4064 transitions. [2024-11-16 09:33:58,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-16 09:33:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 4064 transitions. [2024-11-16 09:33:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:58,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:58,599 INFO L215 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] [2024-11-16 09:33:58,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:33:58,599 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:58,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:58,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1441042735, now seen corresponding path program 1 times [2024-11-16 09:33:58,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:58,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935819519] [2024-11-16 09:33:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:58,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 09:33:58,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:58,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935819519] [2024-11-16 09:33:58,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935819519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:58,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:58,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079738661] [2024-11-16 09:33:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:58,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:58,666 INFO L87 Difference]: Start difference. First operand 2700 states and 4064 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-16 09:33:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:58,752 INFO L93 Difference]: Finished difference Result 4328 states and 6296 transitions. [2024-11-16 09:33:58,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:58,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 58 [2024-11-16 09:33:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:58,762 INFO L225 Difference]: With dead ends: 4328 [2024-11-16 09:33:58,762 INFO L226 Difference]: Without dead ends: 3733 [2024-11-16 09:33:58,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:58,765 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 3061 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:58,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 3178 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2024-11-16 09:33:58,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3292. [2024-11-16 09:33:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 3290 states have (on average 1.478419452887538) internal successors, (4864), 3291 states have internal predecessors, (4864), 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) [2024-11-16 09:33:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 4864 transitions. [2024-11-16 09:33:58,854 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 4864 transitions. Word has length 58 [2024-11-16 09:33:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:58,854 INFO L471 AbstractCegarLoop]: Abstraction has 3292 states and 4864 transitions. [2024-11-16 09:33:58,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-16 09:33:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 4864 transitions. [2024-11-16 09:33:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:58,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:58,855 INFO L215 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] [2024-11-16 09:33:58,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:33:58,856 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:58,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash 872851857, now seen corresponding path program 1 times [2024-11-16 09:33:58,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:58,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620558145] [2024-11-16 09:33:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:58,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:58,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620558145] [2024-11-16 09:33:58,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620558145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:58,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:58,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372068126] [2024-11-16 09:33:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:58,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:58,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:58,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:58,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:58,910 INFO L87 Difference]: Start difference. First operand 3292 states and 4864 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2024-11-16 09:33:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:58,951 INFO L93 Difference]: Finished difference Result 5806 states and 8264 transitions. [2024-11-16 09:33:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:58,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 60 [2024-11-16 09:33:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:58,960 INFO L225 Difference]: With dead ends: 5806 [2024-11-16 09:33:58,960 INFO L226 Difference]: Without dead ends: 3295 [2024-11-16 09:33:58,963 INFO L431 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 [2024-11-16 09:33:58,964 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 28 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3034 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 [2024-11-16 09:33:58,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3034 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2024-11-16 09:33:59,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 3292. [2024-11-16 09:33:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 3290 states have (on average 1.4632218844984803) internal successors, (4814), 3291 states have internal predecessors, (4814), 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) [2024-11-16 09:33:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 4814 transitions. [2024-11-16 09:33:59,019 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 4814 transitions. Word has length 60 [2024-11-16 09:33:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:59,020 INFO L471 AbstractCegarLoop]: Abstraction has 3292 states and 4814 transitions. [2024-11-16 09:33:59,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2024-11-16 09:33:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 4814 transitions. [2024-11-16 09:33:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:59,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:59,021 INFO L215 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] [2024-11-16 09:33:59,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:33:59,021 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:59,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash -128557871, now seen corresponding path program 1 times [2024-11-16 09:33:59,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:59,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714508817] [2024-11-16 09:33:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:59,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714508817] [2024-11-16 09:33:59,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714508817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:59,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:59,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:59,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032024783] [2024-11-16 09:33:59,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:59,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:59,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:59,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:59,073 INFO L87 Difference]: Start difference. First operand 3292 states and 4814 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2024-11-16 09:33:59,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:59,101 INFO L93 Difference]: Finished difference Result 4287 states and 6150 transitions. [2024-11-16 09:33:59,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:59,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 60 [2024-11-16 09:33:59,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:59,106 INFO L225 Difference]: With dead ends: 4287 [2024-11-16 09:33:59,106 INFO L226 Difference]: Without dead ends: 1776 [2024-11-16 09:33:59,109 INFO L431 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 [2024-11-16 09:33:59,109 INFO L432 NwaCegarLoop]: 1531 mSDtfsCounter, 24 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3031 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 [2024-11-16 09:33:59,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:59,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2024-11-16 09:33:59,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1766. [2024-11-16 09:33:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1764 states have (on average 1.572562358276644) internal successors, (2774), 1765 states have internal predecessors, (2774), 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) [2024-11-16 09:33:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2774 transitions. [2024-11-16 09:33:59,137 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2774 transitions. Word has length 60 [2024-11-16 09:33:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:59,137 INFO L471 AbstractCegarLoop]: Abstraction has 1766 states and 2774 transitions. [2024-11-16 09:33:59,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2024-11-16 09:33:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2774 transitions. [2024-11-16 09:33:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 09:33:59,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:59,138 INFO L215 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] [2024-11-16 09:33:59,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:33:59,138 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:59,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash 739804039, now seen corresponding path program 1 times [2024-11-16 09:33:59,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:59,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873099388] [2024-11-16 09:33:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:59,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:59,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:59,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873099388] [2024-11-16 09:33:59,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873099388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:59,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:59,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:59,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113711962] [2024-11-16 09:33:59,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:59,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 09:33:59,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:59,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 09:33:59,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:33:59,223 INFO L87 Difference]: Start difference. First operand 1766 states and 2774 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 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) [2024-11-16 09:34:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:03,676 INFO L93 Difference]: Finished difference Result 4025 states and 7087 transitions. [2024-11-16 09:34:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 09:34:03,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 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 62 [2024-11-16 09:34:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:03,682 INFO L225 Difference]: With dead ends: 4025 [2024-11-16 09:34:03,682 INFO L226 Difference]: Without dead ends: 3270 [2024-11-16 09:34:03,684 INFO L431 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 [2024-11-16 09:34:03,684 INFO L432 NwaCegarLoop]: 767 mSDtfsCounter, 2327 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:03,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 790 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-16 09:34:03,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2024-11-16 09:34:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3270. [2024-11-16 09:34:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3268 states have (on average 1.5) internal successors, (4902), 3269 states have internal predecessors, (4902), 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) [2024-11-16 09:34:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4902 transitions. [2024-11-16 09:34:03,780 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4902 transitions. Word has length 62 [2024-11-16 09:34:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:03,780 INFO L471 AbstractCegarLoop]: Abstraction has 3270 states and 4902 transitions. [2024-11-16 09:34:03,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 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) [2024-11-16 09:34:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4902 transitions. [2024-11-16 09:34:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 09:34:03,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:03,781 INFO L215 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] [2024-11-16 09:34:03,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:34:03,782 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:03,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1679113773, now seen corresponding path program 1 times [2024-11-16 09:34:03,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:03,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864706798] [2024-11-16 09:34:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:03,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864706798] [2024-11-16 09:34:03,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864706798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:34:03,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:34:03,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:34:03,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758904838] [2024-11-16 09:34:03,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:34:03,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:34:03,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:34:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:34:03,865 INFO L87 Difference]: Start difference. First operand 3270 states and 4902 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2024-11-16 09:34:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:03,900 INFO L93 Difference]: Finished difference Result 3762 states and 5554 transitions. [2024-11-16 09:34:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:34:03,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 62 [2024-11-16 09:34:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:03,907 INFO L225 Difference]: With dead ends: 3762 [2024-11-16 09:34:03,908 INFO L226 Difference]: Without dead ends: 2787 [2024-11-16 09:34:03,909 INFO L431 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 [2024-11-16 09:34:03,910 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 22 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3010 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 [2024-11-16 09:34:03,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3010 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:34:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2024-11-16 09:34:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2784. [2024-11-16 09:34:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.52588066139468) internal successors, (4245), 2783 states have internal predecessors, (4245), 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) [2024-11-16 09:34:03,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4245 transitions. [2024-11-16 09:34:03,961 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4245 transitions. Word has length 62 [2024-11-16 09:34:03,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:03,961 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4245 transitions. [2024-11-16 09:34:03,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2024-11-16 09:34:03,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4245 transitions. [2024-11-16 09:34:03,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 09:34:03,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:03,963 INFO L215 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] [2024-11-16 09:34:03,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 09:34:03,963 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:03,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1606031738, now seen corresponding path program 1 times [2024-11-16 09:34:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:03,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558943040] [2024-11-16 09:34:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:03,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:04,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:04,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558943040] [2024-11-16 09:34:04,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558943040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:04,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300824372] [2024-11-16 09:34:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:04,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:04,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:04,319 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) [2024-11-16 09:34:04,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:34:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:04,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 09:34:04,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:05,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:07,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300824372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:07,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:07,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 19, 17] total 42 [2024-11-16 09:34:07,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562511504] [2024-11-16 09:34:07,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:07,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 09:34:07,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 09:34:07,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 09:34:07,964 INFO L87 Difference]: Start difference. First operand 2784 states and 4245 transitions. Second operand has 42 states, 42 states have (on average 4.0476190476190474) internal successors, (170), 42 states have internal predecessors, (170), 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) [2024-11-16 09:34:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:17,692 INFO L93 Difference]: Finished difference Result 6381 states and 8926 transitions. [2024-11-16 09:34:17,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-16 09:34:17,693 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.0476190476190474) internal successors, (170), 42 states have internal predecessors, (170), 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 64 [2024-11-16 09:34:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:17,700 INFO L225 Difference]: With dead ends: 6381 [2024-11-16 09:34:17,700 INFO L226 Difference]: Without dead ends: 5892 [2024-11-16 09:34:17,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4150 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=2486, Invalid=11556, Unknown=0, NotChecked=0, Total=14042 [2024-11-16 09:34:17,704 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 18857 mSDsluCounter, 15881 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18857 SdHoareTripleChecker+Valid, 17394 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:17,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18857 Valid, 17394 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 09:34:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2024-11-16 09:34:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 4758. [2024-11-16 09:34:17,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4756 states have (on average 1.4240958788898235) internal successors, (6773), 4757 states have internal predecessors, (6773), 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) [2024-11-16 09:34:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 6773 transitions. [2024-11-16 09:34:17,806 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 6773 transitions. Word has length 64 [2024-11-16 09:34:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:17,806 INFO L471 AbstractCegarLoop]: Abstraction has 4758 states and 6773 transitions. [2024-11-16 09:34:17,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.0476190476190474) internal successors, (170), 42 states have internal predecessors, (170), 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) [2024-11-16 09:34:17,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 6773 transitions. [2024-11-16 09:34:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 09:34:17,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:17,807 INFO L215 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] [2024-11-16 09:34:17,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:34:18,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 09:34:18,008 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:18,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:18,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1177276839, now seen corresponding path program 1 times [2024-11-16 09:34:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:18,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661742231] [2024-11-16 09:34:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:18,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:18,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:18,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661742231] [2024-11-16 09:34:18,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661742231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:18,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922502626] [2024-11-16 09:34:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:18,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:18,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:18,331 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) [2024-11-16 09:34:18,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:34:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:18,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 09:34:18,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:18,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:19,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922502626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:19,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:19,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-16 09:34:19,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821184558] [2024-11-16 09:34:19,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:19,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 09:34:19,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:19,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 09:34:19,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-16 09:34:19,185 INFO L87 Difference]: Start difference. First operand 4758 states and 6773 transitions. Second operand has 21 states, 21 states have (on average 6.428571428571429) internal successors, (135), 20 states have internal predecessors, (135), 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) [2024-11-16 09:34:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:19,587 INFO L93 Difference]: Finished difference Result 7923 states and 10888 transitions. [2024-11-16 09:34:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 09:34:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.428571428571429) internal successors, (135), 20 states have internal predecessors, (135), 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 [2024-11-16 09:34:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:19,596 INFO L225 Difference]: With dead ends: 7923 [2024-11-16 09:34:19,596 INFO L226 Difference]: Without dead ends: 5880 [2024-11-16 09:34:19,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2024-11-16 09:34:19,600 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 10491 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10491 SdHoareTripleChecker+Valid, 4764 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:19,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10491 Valid, 4764 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:34:19,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2024-11-16 09:34:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5838. [2024-11-16 09:34:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5838 states, 5836 states have (on average 1.3884509938313914) internal successors, (8103), 5837 states have internal predecessors, (8103), 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) [2024-11-16 09:34:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 8103 transitions. [2024-11-16 09:34:19,709 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 8103 transitions. Word has length 65 [2024-11-16 09:34:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:19,710 INFO L471 AbstractCegarLoop]: Abstraction has 5838 states and 8103 transitions. [2024-11-16 09:34:19,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.428571428571429) internal successors, (135), 20 states have internal predecessors, (135), 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) [2024-11-16 09:34:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 8103 transitions. [2024-11-16 09:34:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 09:34:19,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:19,711 INFO L215 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] [2024-11-16 09:34:19,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 09:34:19,911 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,SelfDestructingSolverStorable17 [2024-11-16 09:34:19,912 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:19,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1013955843, now seen corresponding path program 1 times [2024-11-16 09:34:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603562549] [2024-11-16 09:34:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603562549] [2024-11-16 09:34:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603562549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170562232] [2024-11-16 09:34:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:20,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:20,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:20,642 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) [2024-11-16 09:34:20,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:34:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:20,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 09:34:20,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:21,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170562232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:22,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 41 [2024-11-16 09:34:22,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304607810] [2024-11-16 09:34:22,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:22,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 09:34:22,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:22,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 09:34:22,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1506, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 09:34:22,123 INFO L87 Difference]: Start difference. First operand 5838 states and 8103 transitions. Second operand has 41 states, 41 states have (on average 4.048780487804878) internal successors, (166), 41 states have internal predecessors, (166), 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) [2024-11-16 09:34:27,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:27,618 INFO L93 Difference]: Finished difference Result 12711 states and 16728 transitions. [2024-11-16 09:34:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-16 09:34:27,618 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.048780487804878) internal successors, (166), 41 states have internal predecessors, (166), 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 [2024-11-16 09:34:27,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:27,629 INFO L225 Difference]: With dead ends: 12711 [2024-11-16 09:34:27,629 INFO L226 Difference]: Without dead ends: 10508 [2024-11-16 09:34:27,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2376, Invalid=10056, Unknown=0, NotChecked=0, Total=12432 [2024-11-16 09:34:27,635 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 23159 mSDsluCounter, 24569 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23159 SdHoareTripleChecker+Valid, 26128 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:27,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23159 Valid, 26128 Invalid, 2683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2599 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 09:34:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10508 states. [2024-11-16 09:34:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10508 to 6577. [2024-11-16 09:34:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 6575 states have (on average 1.3720152091254754) internal successors, (9021), 6576 states have internal predecessors, (9021), 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) [2024-11-16 09:34:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 9021 transitions. [2024-11-16 09:34:27,794 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 9021 transitions. Word has length 65 [2024-11-16 09:34:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:27,794 INFO L471 AbstractCegarLoop]: Abstraction has 6577 states and 9021 transitions. [2024-11-16 09:34:27,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.048780487804878) internal successors, (166), 41 states have internal predecessors, (166), 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) [2024-11-16 09:34:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 9021 transitions. [2024-11-16 09:34:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 09:34:27,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:27,795 INFO L215 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] [2024-11-16 09:34:27,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 09:34:27,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:27,997 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:27,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash -717183867, now seen corresponding path program 1 times [2024-11-16 09:34:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:27,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040748288] [2024-11-16 09:34:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:27,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:29,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:29,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040748288] [2024-11-16 09:34:29,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040748288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:29,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795302015] [2024-11-16 09:34:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:29,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:29,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:29,363 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) [2024-11-16 09:34:29,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 09:34:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:29,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 09:34:29,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:31,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:34,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795302015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:34,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 20] total 58 [2024-11-16 09:34:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203616437] [2024-11-16 09:34:34,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:34,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-16 09:34:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-16 09:34:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=2968, Unknown=0, NotChecked=0, Total=3306 [2024-11-16 09:34:34,189 INFO L87 Difference]: Start difference. First operand 6577 states and 9021 transitions. Second operand has 58 states, 58 states have (on average 3.0172413793103448) internal successors, (175), 58 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)