./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.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.4.1.ufo.UNBOUNDED.pals+Problem12_label04.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 eb4732ffcc8aec7b756fbc1474109f3a44e8146c5a6c10619dc86e06d247c798 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:36:39,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:36:39,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:36:39,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:36:39,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:36:39,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:36:39,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:36:39,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:36:39,573 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:36:39,575 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:36:39,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:36:39,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:36:39,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:36:39,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:36:39,578 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:36:39,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:36:39,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:36:39,579 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:36:39,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:36:39,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:36:39,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:36:39,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:36:39,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:36:39,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:36:39,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:36:39,585 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:36:39,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:36:39,586 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:36:39,586 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:36:39,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:36:39,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:36:39,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:36:39,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:36:39,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:36:39,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:36:39,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:36:39,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:36:39,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:36:39,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:36:39,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:36:39,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:36:39,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:36:39,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb4732ffcc8aec7b756fbc1474109f3a44e8146c5a6c10619dc86e06d247c798 [2024-11-16 09:36:39,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:36:39,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:36:39,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:36:39,899 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:36:39,899 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:36:39,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-16 09:36:41,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:36:41,716 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:36:41,718 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-16 09:36:41,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d233d3b/786ce3f8412f4a8faf2f988b13635475/FLAG28f4e260a [2024-11-16 09:36:41,797 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d233d3b/786ce3f8412f4a8faf2f988b13635475 [2024-11-16 09:36:41,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:36:41,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:36:41,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:36:41,807 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:36:41,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:36:41,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:36:41" (1/1) ... [2024-11-16 09:36:41,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b44a8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:41, skipping insertion in model container [2024-11-16 09:36:41,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:36:41" (1/1) ... [2024-11-16 09:36:41,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:36:42,235 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c[8749,8762] [2024-11-16 09:36:42,305 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15810,15823] [2024-11-16 09:36:43,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:36:43,072 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:36:43,097 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c[8749,8762] [2024-11-16 09:36:43,106 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15810,15823] [2024-11-16 09:36:43,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:36:43,497 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:36:43,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43 WrapperNode [2024-11-16 09:36:43,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:36:43,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:36:43,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:36:43,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:36:43,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:43,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:43,774 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5038 [2024-11-16 09:36:43,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:36:43,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:36:43,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:36:43,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:36:43,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:43,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:43,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:44,079 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 09:36:44,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:44,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:44,160 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:44,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:44,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:44,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:44,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:36:44,257 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:36:44,258 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:36:44,258 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:36:44,259 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (1/1) ... [2024-11-16 09:36:44,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:36:44,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:36:44,291 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 09:36:44,294 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 09:36:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:36:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:36:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:36:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:36:44,444 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:36:44,445 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:36:48,713 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3537: havoc calculate_output2_#t~ret34#1; [2024-11-16 09:36:48,714 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5027: havoc calculate_output3_#t~ret35#1; [2024-11-16 09:36:48,715 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L2058: havoc calculate_output_#t~ret33#1; [2024-11-16 09:36:48,916 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-16 09:36:48,916 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:36:48,953 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:36:48,954 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:36:48,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:36:48 BoogieIcfgContainer [2024-11-16 09:36:48,954 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:36:48,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:36:48,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:36:48,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:36:48,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:36:41" (1/3) ... [2024-11-16 09:36:48,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3968db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:36:48, skipping insertion in model container [2024-11-16 09:36:48,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:36:43" (2/3) ... [2024-11-16 09:36:48,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3968db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:36:48, skipping insertion in model container [2024-11-16 09:36:48,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:36:48" (3/3) ... [2024-11-16 09:36:48,967 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-16 09:36:48,985 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:36:48,985 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:36:49,083 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:36:49,090 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;@7c7c9835, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:36:49,090 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:36:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 894 states, 891 states have (on average 1.897867564534231) internal successors, (1691), 893 states have internal predecessors, (1691), 0 states have call successors, (0), 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 09:36:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 09:36:49,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:49,107 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] [2024-11-16 09:36:49,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:49,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:49,113 INFO L85 PathProgramCache]: Analyzing trace with hash -950479486, now seen corresponding path program 1 times [2024-11-16 09:36:49,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:49,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596785804] [2024-11-16 09:36:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:49,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:49,401 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 09:36:49,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:49,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596785804] [2024-11-16 09:36:49,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596785804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:49,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:49,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:36:49,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929706322] [2024-11-16 09:36:49,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:49,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:36:49,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:36:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:36:49,441 INFO L87 Difference]: Start difference. First operand has 894 states, 891 states have (on average 1.897867564534231) internal successors, (1691), 893 states have internal predecessors, (1691), 0 states have call successors, (0), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 09:36:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:49,538 INFO L93 Difference]: Finished difference Result 1755 states and 3324 transitions. [2024-11-16 09:36:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:36:49,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-16 09:36:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:49,556 INFO L225 Difference]: With dead ends: 1755 [2024-11-16 09:36:49,557 INFO L226 Difference]: Without dead ends: 826 [2024-11-16 09:36:49,562 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 09:36:49,565 INFO L432 NwaCegarLoop]: 1620 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, 1620 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 09:36:49,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-11-16 09:36:49,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2024-11-16 09:36:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 824 states have (on average 1.8883495145631068) internal successors, (1556), 825 states have internal predecessors, (1556), 0 states have call successors, (0), 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 09:36:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1556 transitions. [2024-11-16 09:36:49,651 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1556 transitions. Word has length 24 [2024-11-16 09:36:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:49,651 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1556 transitions. [2024-11-16 09:36:49,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 09:36:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1556 transitions. [2024-11-16 09:36:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 09:36:49,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:49,653 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] [2024-11-16 09:36:49,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:36:49,654 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:49,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:49,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1947551839, now seen corresponding path program 1 times [2024-11-16 09:36:49,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:49,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603949839] [2024-11-16 09:36:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:49,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:49,921 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 09:36:49,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:49,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603949839] [2024-11-16 09:36:49,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603949839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:49,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:49,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:36:49,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760017204] [2024-11-16 09:36:49,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:49,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:36:49,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:49,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:36:49,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:36:49,929 INFO L87 Difference]: Start difference. First operand 826 states and 1556 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 09:36:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:50,045 INFO L93 Difference]: Finished difference Result 871 states and 1623 transitions. [2024-11-16 09:36:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:36:50,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-16 09:36:50,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:50,050 INFO L225 Difference]: With dead ends: 871 [2024-11-16 09:36:50,051 INFO L226 Difference]: Without dead ends: 826 [2024-11-16 09:36:50,052 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 09:36:50,053 INFO L432 NwaCegarLoop]: 1554 mSDtfsCounter, 0 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:50,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6188 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:36:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-11-16 09:36:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2024-11-16 09:36:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 824 states have (on average 1.8604368932038835) internal successors, (1533), 825 states have internal predecessors, (1533), 0 states have call successors, (0), 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 09:36:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1533 transitions. [2024-11-16 09:36:50,083 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1533 transitions. Word has length 24 [2024-11-16 09:36:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:50,084 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1533 transitions. [2024-11-16 09:36:50,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 09:36:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1533 transitions. [2024-11-16 09:36:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 09:36:50,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:50,088 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] [2024-11-16 09:36:50,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:36:50,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:50,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1658798773, now seen corresponding path program 1 times [2024-11-16 09:36:50,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:50,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45781526] [2024-11-16 09:36:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:50,265 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 09:36:50,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45781526] [2024-11-16 09:36:50,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45781526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:50,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:50,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:36:50,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693948138] [2024-11-16 09:36:50,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:50,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:36:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:50,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:36:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:36:50,270 INFO L87 Difference]: Start difference. First operand 826 states and 1533 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:36:50,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:50,463 INFO L93 Difference]: Finished difference Result 1154 states and 2037 transitions. [2024-11-16 09:36:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 09:36:50,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 09:36:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:50,470 INFO L225 Difference]: With dead ends: 1154 [2024-11-16 09:36:50,470 INFO L226 Difference]: Without dead ends: 1113 [2024-11-16 09:36:50,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:36:50,474 INFO L432 NwaCegarLoop]: 1527 mSDtfsCounter, 6317 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6317 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:50,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6317 Valid, 2173 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:36:50,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-11-16 09:36:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 864. [2024-11-16 09:36:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.8468677494199537) internal successors, (1592), 863 states have internal predecessors, (1592), 0 states have call successors, (0), 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 09:36:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1592 transitions. [2024-11-16 09:36:50,499 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1592 transitions. Word has length 46 [2024-11-16 09:36:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:50,499 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1592 transitions. [2024-11-16 09:36:50,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:36:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1592 transitions. [2024-11-16 09:36:50,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 09:36:50,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:50,503 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] [2024-11-16 09:36:50,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:36:50,504 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:50,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1616606509, now seen corresponding path program 1 times [2024-11-16 09:36:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:50,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323829192] [2024-11-16 09:36:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:50,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:50,759 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 09:36:50,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:50,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323829192] [2024-11-16 09:36:50,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323829192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:50,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:50,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:36:50,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937423360] [2024-11-16 09:36:50,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:50,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:36:50,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:50,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:36:50,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:36:50,762 INFO L87 Difference]: Start difference. First operand 864 states and 1592 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:36:50,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:50,880 INFO L93 Difference]: Finished difference Result 946 states and 1716 transitions. [2024-11-16 09:36:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:36:50,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 09:36:50,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:50,884 INFO L225 Difference]: With dead ends: 946 [2024-11-16 09:36:50,885 INFO L226 Difference]: Without dead ends: 867 [2024-11-16 09:36:50,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:36:50,886 INFO L432 NwaCegarLoop]: 1527 mSDtfsCounter, 2982 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2982 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:50,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2982 Valid, 1704 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2024-11-16 09:36:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 864. [2024-11-16 09:36:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.845707656612529) internal successors, (1591), 863 states have internal predecessors, (1591), 0 states have call successors, (0), 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 09:36:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1591 transitions. [2024-11-16 09:36:50,903 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1591 transitions. Word has length 48 [2024-11-16 09:36:50,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:50,904 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1591 transitions. [2024-11-16 09:36:50,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:36:50,904 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1591 transitions. [2024-11-16 09:36:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 09:36:50,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:50,905 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] [2024-11-16 09:36:50,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:36:50,906 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:50,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash 299013432, now seen corresponding path program 1 times [2024-11-16 09:36:50,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:50,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947460479] [2024-11-16 09:36:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:50,984 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 09:36:50,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:50,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947460479] [2024-11-16 09:36:50,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947460479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:50,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:50,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:36:50,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214216340] [2024-11-16 09:36:50,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:50,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:50,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:50,986 INFO L87 Difference]: Start difference. First operand 864 states and 1591 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 09:36:51,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:51,027 INFO L93 Difference]: Finished difference Result 1010 states and 1813 transitions. [2024-11-16 09:36:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:51,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-16 09:36:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:51,032 INFO L225 Difference]: With dead ends: 1010 [2024-11-16 09:36:51,034 INFO L226 Difference]: Without dead ends: 931 [2024-11-16 09:36:51,034 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 09:36:51,035 INFO L432 NwaCegarLoop]: 1529 mSDtfsCounter, 1480 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:51,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1585 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-11-16 09:36:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 926. [2024-11-16 09:36:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 924 states have (on average 1.8214285714285714) internal successors, (1683), 925 states have internal predecessors, (1683), 0 states have call successors, (0), 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 09:36:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1683 transitions. [2024-11-16 09:36:51,107 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1683 transitions. Word has length 49 [2024-11-16 09:36:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:51,107 INFO L471 AbstractCegarLoop]: Abstraction has 926 states and 1683 transitions. [2024-11-16 09:36:51,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 09:36:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1683 transitions. [2024-11-16 09:36:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:36:51,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:51,109 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] [2024-11-16 09:36:51,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:36:51,110 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:51,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash 118985519, now seen corresponding path program 1 times [2024-11-16 09:36:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:51,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815728987] [2024-11-16 09:36:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:51,171 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 09:36:51,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:51,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815728987] [2024-11-16 09:36:51,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815728987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:51,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:51,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:36:51,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994655910] [2024-11-16 09:36:51,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:51,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:51,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:51,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:51,174 INFO L87 Difference]: Start difference. First operand 926 states and 1683 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 09:36:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:51,211 INFO L93 Difference]: Finished difference Result 1192 states and 2081 transitions. [2024-11-16 09:36:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:51,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-16 09:36:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:51,216 INFO L225 Difference]: With dead ends: 1192 [2024-11-16 09:36:51,217 INFO L226 Difference]: Without dead ends: 1051 [2024-11-16 09:36:51,217 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 09:36:51,218 INFO L432 NwaCegarLoop]: 1572 mSDtfsCounter, 1491 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1640 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 09:36:51,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1640 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-11-16 09:36:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1048. [2024-11-16 09:36:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1046 states have (on average 1.780114722753346) internal successors, (1862), 1047 states have internal predecessors, (1862), 0 states have call successors, (0), 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 09:36:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1862 transitions. [2024-11-16 09:36:51,243 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1862 transitions. Word has length 50 [2024-11-16 09:36:51,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:51,244 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1862 transitions. [2024-11-16 09:36:51,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 09:36:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1862 transitions. [2024-11-16 09:36:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:36:51,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:51,245 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] [2024-11-16 09:36:51,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:36:51,245 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:51,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:51,245 INFO L85 PathProgramCache]: Analyzing trace with hash 104535663, now seen corresponding path program 1 times [2024-11-16 09:36:51,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:51,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379933178] [2024-11-16 09:36:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:51,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:51,325 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 09:36:51,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:51,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379933178] [2024-11-16 09:36:51,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379933178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:51,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:51,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:36:51,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105804777] [2024-11-16 09:36:51,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:51,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:51,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:51,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:51,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:51,329 INFO L87 Difference]: Start difference. First operand 1048 states and 1862 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 09:36:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:51,360 INFO L93 Difference]: Finished difference Result 1542 states and 2590 transitions. [2024-11-16 09:36:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:51,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-16 09:36:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:51,367 INFO L225 Difference]: With dead ends: 1542 [2024-11-16 09:36:51,367 INFO L226 Difference]: Without dead ends: 1279 [2024-11-16 09:36:51,368 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 09:36:51,370 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 1489 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1642 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 09:36:51,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1642 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:51,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2024-11-16 09:36:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1276. [2024-11-16 09:36:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1274 states have (on average 1.717425431711146) internal successors, (2188), 1275 states have internal predecessors, (2188), 0 states have call successors, (0), 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 09:36:51,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 2188 transitions. [2024-11-16 09:36:51,398 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 2188 transitions. Word has length 50 [2024-11-16 09:36:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:51,399 INFO L471 AbstractCegarLoop]: Abstraction has 1276 states and 2188 transitions. [2024-11-16 09:36:51,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 09:36:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2188 transitions. [2024-11-16 09:36:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:36:51,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:51,400 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] [2024-11-16 09:36:51,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:36:51,401 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:51,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2098828881, now seen corresponding path program 1 times [2024-11-16 09:36:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:51,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036070127] [2024-11-16 09:36:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:51,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:51,468 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 09:36:51,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036070127] [2024-11-16 09:36:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036070127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:51,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:51,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:36:51,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628108174] [2024-11-16 09:36:51,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:51,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:51,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:51,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:51,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:51,471 INFO L87 Difference]: Start difference. First operand 1276 states and 2188 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 09:36:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:51,505 INFO L93 Difference]: Finished difference Result 2194 states and 3512 transitions. [2024-11-16 09:36:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:51,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-16 09:36:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:51,514 INFO L225 Difference]: With dead ends: 2194 [2024-11-16 09:36:51,514 INFO L226 Difference]: Without dead ends: 1703 [2024-11-16 09:36:51,515 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 09:36:51,516 INFO L432 NwaCegarLoop]: 1568 mSDtfsCounter, 1487 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1644 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 09:36:51,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1644 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2024-11-16 09:36:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1700. [2024-11-16 09:36:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1698 states have (on average 1.634864546525324) internal successors, (2776), 1699 states have internal predecessors, (2776), 0 states have call successors, (0), 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 09:36:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2776 transitions. [2024-11-16 09:36:51,556 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2776 transitions. Word has length 50 [2024-11-16 09:36:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:51,556 INFO L471 AbstractCegarLoop]: Abstraction has 1700 states and 2776 transitions. [2024-11-16 09:36:51,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 09:36:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2776 transitions. [2024-11-16 09:36:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:36:51,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:51,558 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] [2024-11-16 09:36:51,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:36:51,558 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:51,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:51,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1671861360, now seen corresponding path program 1 times [2024-11-16 09:36:51,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:51,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913001534] [2024-11-16 09:36:51,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:51,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:51,760 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 09:36:51,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:51,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913001534] [2024-11-16 09:36:51,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913001534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:51,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:51,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:36:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355603106] [2024-11-16 09:36:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:51,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:36:51,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:36:51,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:36:51,762 INFO L87 Difference]: Start difference. First operand 1700 states and 2776 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 09:36:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:51,812 INFO L93 Difference]: Finished difference Result 1751 states and 2842 transitions. [2024-11-16 09:36:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:36:51,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-16 09:36:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:51,821 INFO L225 Difference]: With dead ends: 1751 [2024-11-16 09:36:51,821 INFO L226 Difference]: Without dead ends: 1748 [2024-11-16 09:36:51,822 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 09:36:51,823 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6111 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:51,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6111 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:51,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2024-11-16 09:36:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1748. [2024-11-16 09:36:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1746 states have (on average 1.6128293241695304) internal successors, (2816), 1747 states have internal predecessors, (2816), 0 states have call successors, (0), 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 09:36:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2816 transitions. [2024-11-16 09:36:51,862 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2816 transitions. Word has length 50 [2024-11-16 09:36:51,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:51,863 INFO L471 AbstractCegarLoop]: Abstraction has 1748 states and 2816 transitions. [2024-11-16 09:36:51,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 09:36:51,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2816 transitions. [2024-11-16 09:36:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 09:36:51,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:51,865 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] [2024-11-16 09:36:51,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:36:51,865 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:51,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash 102114415, now seen corresponding path program 1 times [2024-11-16 09:36:51,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:51,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046872522] [2024-11-16 09:36:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:51,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:51,921 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 09:36:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046872522] [2024-11-16 09:36:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046872522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:51,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:51,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:36:51,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556800899] [2024-11-16 09:36:51,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:51,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:51,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:51,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:51,926 INFO L87 Difference]: Start difference. First operand 1748 states and 2816 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 09:36:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:51,964 INFO L93 Difference]: Finished difference Result 2782 states and 4281 transitions. [2024-11-16 09:36:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:51,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 52 [2024-11-16 09:36:51,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:51,973 INFO L225 Difference]: With dead ends: 2782 [2024-11-16 09:36:51,973 INFO L226 Difference]: Without dead ends: 2218 [2024-11-16 09:36:51,974 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 09:36:51,975 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 1490 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1641 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 09:36:51,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1641 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:51,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2024-11-16 09:36:52,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2215. [2024-11-16 09:36:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2213 states have (on average 1.5594215996384997) internal successors, (3451), 2214 states have internal predecessors, (3451), 0 states have call successors, (0), 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 09:36:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3451 transitions. [2024-11-16 09:36:52,023 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3451 transitions. Word has length 52 [2024-11-16 09:36:52,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:52,023 INFO L471 AbstractCegarLoop]: Abstraction has 2215 states and 3451 transitions. [2024-11-16 09:36:52,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 09:36:52,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3451 transitions. [2024-11-16 09:36:52,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 09:36:52,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:52,024 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, 1] [2024-11-16 09:36:52,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:36:52,025 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:52,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:52,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1429576152, now seen corresponding path program 1 times [2024-11-16 09:36:52,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:52,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755477459] [2024-11-16 09:36:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:52,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:52,078 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 09:36:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755477459] [2024-11-16 09:36:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755477459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:52,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:52,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:36:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289000637] [2024-11-16 09:36:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:52,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:52,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:52,081 INFO L87 Difference]: Start difference. First operand 2215 states and 3451 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 09:36:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:55,595 INFO L93 Difference]: Finished difference Result 3722 states and 6327 transitions. [2024-11-16 09:36:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:55,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-11-16 09:36:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:55,605 INFO L225 Difference]: With dead ends: 3722 [2024-11-16 09:36:55,605 INFO L226 Difference]: Without dead ends: 2967 [2024-11-16 09:36:55,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:55,607 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 832 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:55,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 571 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-16 09:36:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2024-11-16 09:36:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2967. [2024-11-16 09:36:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2965 states have (on average 1.4944350758853289) internal successors, (4431), 2966 states have internal predecessors, (4431), 0 states have call successors, (0), 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 09:36:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4431 transitions. [2024-11-16 09:36:55,668 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4431 transitions. Word has length 63 [2024-11-16 09:36:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:55,669 INFO L471 AbstractCegarLoop]: Abstraction has 2967 states and 4431 transitions. [2024-11-16 09:36:55,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 09:36:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4431 transitions. [2024-11-16 09:36:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:36:55,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:55,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:36:55,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:36:55,671 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:55,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:55,671 INFO L85 PathProgramCache]: Analyzing trace with hash -258028931, now seen corresponding path program 1 times [2024-11-16 09:36:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:55,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898018941] [2024-11-16 09:36:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:55,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:36:55,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898018941] [2024-11-16 09:36:55,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898018941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:55,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:55,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:36:55,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975378122] [2024-11-16 09:36:55,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:55,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:36:55,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:36:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:36:55,796 INFO L87 Difference]: Start difference. First operand 2967 states and 4431 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 09:36:56,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:56,006 INFO L93 Difference]: Finished difference Result 8998 states and 12769 transitions. [2024-11-16 09:36:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:36:56,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 69 [2024-11-16 09:36:56,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:56,028 INFO L225 Difference]: With dead ends: 8998 [2024-11-16 09:36:56,029 INFO L226 Difference]: Without dead ends: 7571 [2024-11-16 09:36:56,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:36:56,033 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 4683 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:56,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 3396 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:36:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7571 states. [2024-11-16 09:36:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7571 to 4391. [2024-11-16 09:36:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4389 states have (on average 1.4543176122123491) internal successors, (6383), 4390 states have internal predecessors, (6383), 0 states have call successors, (0), 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 09:36:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6383 transitions. [2024-11-16 09:36:56,175 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6383 transitions. Word has length 69 [2024-11-16 09:36:56,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:56,175 INFO L471 AbstractCegarLoop]: Abstraction has 4391 states and 6383 transitions. [2024-11-16 09:36:56,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 09:36:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6383 transitions. [2024-11-16 09:36:56,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:36:56,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:56,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:36:56,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:36:56,177 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:56,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:56,178 INFO L85 PathProgramCache]: Analyzing trace with hash -272478787, now seen corresponding path program 1 times [2024-11-16 09:36:56,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:56,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218104557] [2024-11-16 09:36:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:56,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 09:36:56,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:56,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218104557] [2024-11-16 09:36:56,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218104557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:56,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:56,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:36:56,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243816706] [2024-11-16 09:36:56,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:56,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:36:56,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:56,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:36:56,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:36:56,293 INFO L87 Difference]: Start difference. First operand 4391 states and 6383 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 09:36:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:56,499 INFO L93 Difference]: Finished difference Result 10422 states and 14721 transitions. [2024-11-16 09:36:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:36:56,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 69 [2024-11-16 09:36:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:56,535 INFO L225 Difference]: With dead ends: 10422 [2024-11-16 09:36:56,537 INFO L226 Difference]: Without dead ends: 8995 [2024-11-16 09:36:56,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:36:56,543 INFO L432 NwaCegarLoop]: 1587 mSDtfsCounter, 4710 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4710 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:56,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4710 Valid, 3342 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:36:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8995 states. [2024-11-16 09:36:56,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8995 to 6535. [2024-11-16 09:36:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 6533 states have (on average 1.422776672279198) internal successors, (9295), 6534 states have internal predecessors, (9295), 0 states have call successors, (0), 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 09:36:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 9295 transitions. [2024-11-16 09:36:56,729 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 9295 transitions. Word has length 69 [2024-11-16 09:36:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:56,730 INFO L471 AbstractCegarLoop]: Abstraction has 6535 states and 9295 transitions. [2024-11-16 09:36:56,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 09:36:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 9295 transitions. [2024-11-16 09:36:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:36:56,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:56,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:36:56,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:36:56,732 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:56,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:56,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1819123965, now seen corresponding path program 1 times [2024-11-16 09:36:56,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:56,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354698145] [2024-11-16 09:36:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:56,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 09:36:56,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:56,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354698145] [2024-11-16 09:36:56,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354698145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:56,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:56,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:36:56,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691141875] [2024-11-16 09:36:56,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:56,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:36:56,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:56,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:36:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:36:56,897 INFO L87 Difference]: Start difference. First operand 6535 states and 9295 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 09:36:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:57,170 INFO L93 Difference]: Finished difference Result 11846 states and 16673 transitions. [2024-11-16 09:36:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:36:57,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 69 [2024-11-16 09:36:57,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:57,191 INFO L225 Difference]: With dead ends: 11846 [2024-11-16 09:36:57,192 INFO L226 Difference]: Without dead ends: 10419 [2024-11-16 09:36:57,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:36:57,199 INFO L432 NwaCegarLoop]: 1590 mSDtfsCounter, 4693 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:57,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 3365 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:36:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10419 states. [2024-11-16 09:36:57,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10419 to 7959. [2024-11-16 09:36:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7959 states, 7957 states have (on average 1.4134724142264672) internal successors, (11247), 7958 states have internal predecessors, (11247), 0 states have call successors, (0), 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 09:36:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 11247 transitions. [2024-11-16 09:36:57,457 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 11247 transitions. Word has length 69 [2024-11-16 09:36:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:57,458 INFO L471 AbstractCegarLoop]: Abstraction has 7959 states and 11247 transitions. [2024-11-16 09:36:57,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 09:36:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 11247 transitions. [2024-11-16 09:36:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 09:36:57,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:57,461 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:36:57,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:36:57,462 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:57,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash -863306273, now seen corresponding path program 1 times [2024-11-16 09:36:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347141873] [2024-11-16 09:36:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:57,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:36:57,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:57,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347141873] [2024-11-16 09:36:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347141873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:57,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:57,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:36:57,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300486204] [2024-11-16 09:36:57,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:57,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:57,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:57,584 INFO L87 Difference]: Start difference. First operand 7959 states and 11247 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 09:36:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:57,701 INFO L93 Difference]: Finished difference Result 12593 states and 17680 transitions. [2024-11-16 09:36:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:57,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2024-11-16 09:36:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:57,713 INFO L225 Difference]: With dead ends: 12593 [2024-11-16 09:36:57,713 INFO L226 Difference]: Without dead ends: 6174 [2024-11-16 09:36:57,722 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 09:36:57,723 INFO L432 NwaCegarLoop]: 1567 mSDtfsCounter, 43 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3085 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 09:36:57,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3085 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2024-11-16 09:36:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 6171. [2024-11-16 09:36:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6171 states, 6169 states have (on average 1.4282703841789592) internal successors, (8811), 6170 states have internal predecessors, (8811), 0 states have call successors, (0), 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 09:36:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 8811 transitions. [2024-11-16 09:36:57,853 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 8811 transitions. Word has length 71 [2024-11-16 09:36:57,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:57,853 INFO L471 AbstractCegarLoop]: Abstraction has 6171 states and 8811 transitions. [2024-11-16 09:36:57,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 09:36:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 8811 transitions. [2024-11-16 09:36:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 09:36:57,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:57,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:36:57,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:36:57,855 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:57,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:57,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1431519171, now seen corresponding path program 1 times [2024-11-16 09:36:57,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:57,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049846057] [2024-11-16 09:36:57,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:57,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:36:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049846057] [2024-11-16 09:36:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049846057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:58,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:36:58,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455286167] [2024-11-16 09:36:58,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:58,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:36:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:36:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:36:58,025 INFO L87 Difference]: Start difference. First operand 6171 states and 8811 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 09:36:58,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:58,231 INFO L93 Difference]: Finished difference Result 10282 states and 14517 transitions. [2024-11-16 09:36:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:36:58,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 71 [2024-11-16 09:36:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:58,247 INFO L225 Difference]: With dead ends: 10282 [2024-11-16 09:36:58,247 INFO L226 Difference]: Without dead ends: 9255 [2024-11-16 09:36:58,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:36:58,252 INFO L432 NwaCegarLoop]: 1584 mSDtfsCounter, 4691 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4691 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:58,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4691 Valid, 3437 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:36:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9255 states. [2024-11-16 09:36:58,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9255 to 7195. [2024-11-16 09:36:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 7193 states have (on average 1.4206867788127346) internal successors, (10219), 7194 states have internal predecessors, (10219), 0 states have call successors, (0), 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 09:36:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10219 transitions. [2024-11-16 09:36:58,410 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10219 transitions. Word has length 71 [2024-11-16 09:36:58,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:58,410 INFO L471 AbstractCegarLoop]: Abstraction has 7195 states and 10219 transitions. [2024-11-16 09:36:58,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 09:36:58,411 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10219 transitions. [2024-11-16 09:36:58,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:36:58,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:58,412 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:36:58,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 09:36:58,413 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:58,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash 988971935, now seen corresponding path program 1 times [2024-11-16 09:36:58,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:58,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429001287] [2024-11-16 09:36:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:36:58,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:58,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429001287] [2024-11-16 09:36:58,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429001287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:58,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:58,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:36:58,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867510898] [2024-11-16 09:36:58,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:58,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:58,518 INFO L87 Difference]: Start difference. First operand 7195 states and 10219 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 09:36:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:58,584 INFO L93 Difference]: Finished difference Result 10017 states and 14095 transitions. [2024-11-16 09:36:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:58,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 09:36:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:58,592 INFO L225 Difference]: With dead ends: 10017 [2024-11-16 09:36:58,592 INFO L226 Difference]: Without dead ends: 4382 [2024-11-16 09:36:58,598 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 09:36:58,599 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 36 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3070 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 09:36:58,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3070 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2024-11-16 09:36:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4379. [2024-11-16 09:36:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4377 states have (on average 1.4400274160383824) internal successors, (6303), 4378 states have internal predecessors, (6303), 0 states have call successors, (0), 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 09:36:58,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 6303 transitions. [2024-11-16 09:36:58,678 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 6303 transitions. Word has length 73 [2024-11-16 09:36:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:58,679 INFO L471 AbstractCegarLoop]: Abstraction has 4379 states and 6303 transitions. [2024-11-16 09:36:58,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 09:36:58,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 6303 transitions. [2024-11-16 09:36:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 09:36:58,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:58,680 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:36:58,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 09:36:58,681 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:58,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1742418655, now seen corresponding path program 1 times [2024-11-16 09:36:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730941864] [2024-11-16 09:36:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:58,775 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 09:36:58,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:58,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730941864] [2024-11-16 09:36:58,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730941864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:58,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:58,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:36:58,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609613168] [2024-11-16 09:36:58,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:58,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:58,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:58,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:58,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:58,778 INFO L87 Difference]: Start difference. First operand 4379 states and 6303 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 09:36:58,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:58,819 INFO L93 Difference]: Finished difference Result 5793 states and 8221 transitions. [2024-11-16 09:36:58,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:58,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-16 09:36:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:58,825 INFO L225 Difference]: With dead ends: 5793 [2024-11-16 09:36:58,825 INFO L226 Difference]: Without dead ends: 2974 [2024-11-16 09:36:58,828 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 09:36:58,829 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 31 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3055 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 09:36:58,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3055 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:58,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2024-11-16 09:36:58,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2971. [2024-11-16 09:36:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2969 states have (on average 1.4708656113169418) internal successors, (4367), 2970 states have internal predecessors, (4367), 0 states have call successors, (0), 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 09:36:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4367 transitions. [2024-11-16 09:36:58,878 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4367 transitions. Word has length 75 [2024-11-16 09:36:58,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:58,878 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 4367 transitions. [2024-11-16 09:36:58,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 09:36:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4367 transitions. [2024-11-16 09:36:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 09:36:58,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:58,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:36:58,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 09:36:58,880 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:58,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1576078744, now seen corresponding path program 1 times [2024-11-16 09:36:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134597712] [2024-11-16 09:36:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:58,961 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 09:36:58,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:58,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134597712] [2024-11-16 09:36:58,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134597712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:36:58,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:36:58,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:36:58,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008642256] [2024-11-16 09:36:58,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:36:58,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:36:58,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:36:58,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:36:58,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:36:58,963 INFO L87 Difference]: Start difference. First operand 2971 states and 4367 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 09:36:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:36:58,992 INFO L93 Difference]: Finished difference Result 3681 states and 5317 transitions. [2024-11-16 09:36:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:36:58,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-11-16 09:36:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:36:58,997 INFO L225 Difference]: With dead ends: 3681 [2024-11-16 09:36:58,997 INFO L226 Difference]: Without dead ends: 2270 [2024-11-16 09:36:58,999 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 09:36:58,999 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 28 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:36:58,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:36:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2024-11-16 09:36:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2267. [2024-11-16 09:36:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2265 states have (on average 1.5055187637969094) internal successors, (3410), 2266 states have internal predecessors, (3410), 0 states have call successors, (0), 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 09:36:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3410 transitions. [2024-11-16 09:36:59,033 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3410 transitions. Word has length 77 [2024-11-16 09:36:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:36:59,034 INFO L471 AbstractCegarLoop]: Abstraction has 2267 states and 3410 transitions. [2024-11-16 09:36:59,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 09:36:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3410 transitions. [2024-11-16 09:36:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 09:36:59,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:36:59,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:36:59,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 09:36:59,036 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:36:59,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:36:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1838446799, now seen corresponding path program 1 times [2024-11-16 09:36:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:36:59,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755507275] [2024-11-16 09:36:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:36:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:59,480 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 09:36:59,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:36:59,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755507275] [2024-11-16 09:36:59,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755507275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:36:59,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868874805] [2024-11-16 09:36:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:36:59,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:36:59,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:36:59,483 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 09:36:59,484 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 09:36:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:36:59,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 09:36:59,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:37:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:37:00,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:37:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:37:01,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868874805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:37:01,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:37:01,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-16 09:37:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342955505] [2024-11-16 09:37:01,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:37:01,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 09:37:01,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:37:01,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 09:37:01,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-11-16 09:37:01,225 INFO L87 Difference]: Start difference. First operand 2267 states and 3410 transitions. Second operand has 25 states, 25 states have (on average 8.76) internal successors, (219), 24 states have internal predecessors, (219), 0 states have call successors, (0), 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 09:37:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:37:03,001 INFO L93 Difference]: Finished difference Result 5324 states and 7472 transitions. [2024-11-16 09:37:03,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-16 09:37:03,002 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.76) internal successors, (219), 24 states have internal predecessors, (219), 0 states have call successors, (0), 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 79 [2024-11-16 09:37:03,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:37:03,009 INFO L225 Difference]: With dead ends: 5324 [2024-11-16 09:37:03,009 INFO L226 Difference]: Without dead ends: 4617 [2024-11-16 09:37:03,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=632, Invalid=2448, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 09:37:03,012 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 17411 mSDsluCounter, 5130 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17411 SdHoareTripleChecker+Valid, 6638 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:37:03,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17411 Valid, 6638 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 09:37:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4617 states. [2024-11-16 09:37:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4617 to 4555. [2024-11-16 09:37:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4555 states, 4553 states have (on average 1.3940259169778169) internal successors, (6347), 4554 states have internal predecessors, (6347), 0 states have call successors, (0), 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 09:37:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 6347 transitions. [2024-11-16 09:37:03,105 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 6347 transitions. Word has length 79 [2024-11-16 09:37:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:37:03,105 INFO L471 AbstractCegarLoop]: Abstraction has 4555 states and 6347 transitions. [2024-11-16 09:37:03,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.76) internal successors, (219), 24 states have internal predecessors, (219), 0 states have call successors, (0), 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 09:37:03,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 6347 transitions. [2024-11-16 09:37:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 09:37:03,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:37:03,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:37:03,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 09:37:03,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:37:03,309 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:37:03,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:37:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash 414560335, now seen corresponding path program 1 times [2024-11-16 09:37:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:37:03,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296513132] [2024-11-16 09:37:03,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:37:03,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:37:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:37:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:37:03,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:37:03,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296513132] [2024-11-16 09:37:03,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296513132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:37:03,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807106743] [2024-11-16 09:37:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:37:03,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:37:03,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:37:03,809 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 09:37:03,811 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 09:37:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:37:03,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 09:37:03,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:37:04,348 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 09:37:04,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:37:05,262 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 09:37:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807106743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:37:05,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:37:05,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-16 09:37:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130405918] [2024-11-16 09:37:05,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:37:05,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 09:37:05,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:37:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 09:37:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-16 09:37:05,265 INFO L87 Difference]: Start difference. First operand 4555 states and 6347 transitions. Second operand has 25 states, 25 states have (on average 7.8) internal successors, (195), 24 states have internal predecessors, (195), 0 states have call successors, (0), 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 09:37:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:37:06,996 INFO L93 Difference]: Finished difference Result 12722 states and 16953 transitions. [2024-11-16 09:37:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 09:37:06,997 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.8) internal successors, (195), 24 states have internal predecessors, (195), 0 states have call successors, (0), 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 79 [2024-11-16 09:37:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:37:07,012 INFO L225 Difference]: With dead ends: 12722 [2024-11-16 09:37:07,012 INFO L226 Difference]: Without dead ends: 9727 [2024-11-16 09:37:07,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=629, Invalid=2233, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 09:37:07,018 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 27979 mSDsluCounter, 5128 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27979 SdHoareTripleChecker+Valid, 6651 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:37:07,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27979 Valid, 6651 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 09:37:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9727 states. [2024-11-16 09:37:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9727 to 9643. [2024-11-16 09:37:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9643 states, 9641 states have (on average 1.3294264080489575) internal successors, (12817), 9642 states have internal predecessors, (12817), 0 states have call successors, (0), 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 09:37:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9643 states to 9643 states and 12817 transitions. [2024-11-16 09:37:07,307 INFO L78 Accepts]: Start accepts. Automaton has 9643 states and 12817 transitions. Word has length 79 [2024-11-16 09:37:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:37:07,307 INFO L471 AbstractCegarLoop]: Abstraction has 9643 states and 12817 transitions. [2024-11-16 09:37:07,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.8) internal successors, (195), 24 states have internal predecessors, (195), 0 states have call successors, (0), 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 09:37:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 9643 states and 12817 transitions. [2024-11-16 09:37:07,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 09:37:07,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:37:07,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:37:07,335 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 09:37:07,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-16 09:37:07,514 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:37:07,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:37:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1277964906, now seen corresponding path program 1 times [2024-11-16 09:37:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:37:07,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505599889] [2024-11-16 09:37:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:37:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:37:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:37:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:37:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:37:09,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505599889] [2024-11-16 09:37:09,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505599889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:37:09,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261273072] [2024-11-16 09:37:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:37:09,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:37:09,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:37:09,829 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 09:37:09,830 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 09:37:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:37:09,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-16 09:37:09,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:37:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:37:14,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:37:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:37:18,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261273072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:37:18,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:37:18,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 22] total 70 [2024-11-16 09:37:18,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799488697] [2024-11-16 09:37:18,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:37:18,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-16 09:37:18,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:37:18,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-16 09:37:18,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=4448, Unknown=0, NotChecked=0, Total=4830 [2024-11-16 09:37:18,466 INFO L87 Difference]: Start difference. First operand 9643 states and 12817 transitions. Second operand has 70 states, 70 states have (on average 3.2) internal successors, (224), 70 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)