./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.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 6d20f8abdac11d3a14265079d0abbd72a3c88bf6607f5bf46f98ccd96bfda721 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:33:34,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:33:35,009 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:33:35,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:33:35,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:33:35,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:33:35,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:33:35,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:33:35,038 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:33:35,039 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:33:35,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:33:35,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:33:35,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:33:35,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:33:35,041 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:33:35,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:33:35,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:33:35,042 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:33:35,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:33:35,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:33:35,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:33:35,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:33:35,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:33:35,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:33:35,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:33:35,050 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:33:35,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:33:35,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:33:35,050 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:33:35,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:33:35,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:33:35,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:33:35,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:33:35,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:33:35,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:33:35,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:33:35,052 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:33:35,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:33:35,052 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:33:35,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:33:35,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:33:35,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:33:35,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d20f8abdac11d3a14265079d0abbd72a3c88bf6607f5bf46f98ccd96bfda721 [2024-11-16 09:33:35,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:33:35,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:33:35,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:33:35,424 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:33:35,425 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:33:35,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c [2024-11-16 09:33:36,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:33:37,318 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:33:37,320 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c [2024-11-16 09:33:37,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5578ba9/ea1e69f39fc0423f93ea6e174e247555/FLAGa86c1f1c6 [2024-11-16 09:33:37,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5578ba9/ea1e69f39fc0423f93ea6e174e247555 [2024-11-16 09:33:37,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:33:37,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:33:37,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:33:37,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:33:37,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:33:37,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:33:37" (1/1) ... [2024-11-16 09:33:37,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1fe7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:37, skipping insertion in model container [2024-11-16 09:33:37,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:33:37" (1/1) ... [2024-11-16 09:33:37,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:33:37,972 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c[6354,6367] [2024-11-16 09:33:38,038 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c[8229,8242] [2024-11-16 09:33:38,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:33:38,739 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:33:38,762 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c[6354,6367] [2024-11-16 09:33:38,766 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c[8229,8242] [2024-11-16 09:33:39,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:33:39,271 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:33:39,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39 WrapperNode [2024-11-16 09:33:39,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:33:39,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:33:39,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:33:39,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:33:39,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:39,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:39,584 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-11-16 09:33:39,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:33:39,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:33:39,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:33:39,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:33:39,596 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:39,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:39,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:39,875 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 09:33:39,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:39,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:39,997 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:40,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:40,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:40,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:40,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:33:40,152 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:33:40,152 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:33:40,152 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:33:40,155 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (1/1) ... [2024-11-16 09:33:40,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:33:40,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:40,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 09:33:40,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 09:33:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:33:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:33:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:33:40,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:33:40,456 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:33:40,459 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:33:44,808 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1982: havoc calculate_output_#t~ret30#1; [2024-11-16 09:33:44,808 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3461: havoc calculate_output2_#t~ret31#1; [2024-11-16 09:33:44,808 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4951: havoc calculate_output3_#t~ret32#1; [2024-11-16 09:33:44,979 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-11-16 09:33:44,980 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:33:45,017 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:33:45,021 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:33:45,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:45 BoogieIcfgContainer [2024-11-16 09:33:45,022 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:33:45,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:33:45,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:33:45,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:33:45,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:33:37" (1/3) ... [2024-11-16 09:33:45,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b283f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:45, skipping insertion in model container [2024-11-16 09:33:45,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:39" (2/3) ... [2024-11-16 09:33:45,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b283f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:45, skipping insertion in model container [2024-11-16 09:33:45,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:45" (3/3) ... [2024-11-16 09:33:45,033 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c [2024-11-16 09:33:45,049 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:33:45,049 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:33:45,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:33:45,161 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;@65a95711, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:33:45,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:33:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 879 states, 876 states have (on average 1.8995433789954337) internal successors, (1664), 878 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 09:33:45,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:45,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:45,179 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:45,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:45,184 INFO L85 PathProgramCache]: Analyzing trace with hash -78097911, now seen corresponding path program 1 times [2024-11-16 09:33:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:45,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155066019] [2024-11-16 09:33:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:45,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155066019] [2024-11-16 09:33:45,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155066019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:45,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:45,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:33:45,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145520497] [2024-11-16 09:33:45,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:45,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:45,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:45,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:45,491 INFO L87 Difference]: Start difference. First operand has 879 states, 876 states have (on average 1.8995433789954337) internal successors, (1664), 878 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:48,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:48,786 INFO L93 Difference]: Finished difference Result 2490 states and 4789 transitions. [2024-11-16 09:33:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2024-11-16 09:33:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:48,822 INFO L225 Difference]: With dead ends: 2490 [2024-11-16 09:33:48,822 INFO L226 Difference]: Without dead ends: 1563 [2024-11-16 09:33:48,831 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 09:33:48,836 INFO L432 NwaCegarLoop]: 565 mSDtfsCounter, 910 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:48,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 578 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 09:33:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2024-11-16 09:33:48,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1563. [2024-11-16 09:33:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1561 states have (on average 1.638052530429212) internal successors, (2557), 1562 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2557 transitions. [2024-11-16 09:33:48,962 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2557 transitions. Word has length 18 [2024-11-16 09:33:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:48,963 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2557 transitions. [2024-11-16 09:33:48,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2557 transitions. [2024-11-16 09:33:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 09:33:48,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:48,965 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:48,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:33:48,966 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:48,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:48,966 INFO L85 PathProgramCache]: Analyzing trace with hash -350864691, now seen corresponding path program 1 times [2024-11-16 09:33:48,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:48,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910252916] [2024-11-16 09:33:48,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:48,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:49,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910252916] [2024-11-16 09:33:49,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910252916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:49,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:49,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:49,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851740624] [2024-11-16 09:33:49,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:49,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:49,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:49,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:49,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:49,136 INFO L87 Difference]: Start difference. First operand 1563 states and 2557 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:49,210 INFO L93 Difference]: Finished difference Result 1633 states and 2661 transitions. [2024-11-16 09:33:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:49,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 09:33:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:49,217 INFO L225 Difference]: With dead ends: 1633 [2024-11-16 09:33:49,217 INFO L226 Difference]: Without dead ends: 1596 [2024-11-16 09:33:49,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:49,219 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 49 mSDsluCounter, 4553 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 6078 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:49,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 6078 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:49,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2024-11-16 09:33:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1563. [2024-11-16 09:33:49,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1561 states have (on average 1.6278026905829597) internal successors, (2541), 1562 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2541 transitions. [2024-11-16 09:33:49,249 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2541 transitions. Word has length 22 [2024-11-16 09:33:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:49,250 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2541 transitions. [2024-11-16 09:33:49,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2541 transitions. [2024-11-16 09:33:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 09:33:49,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:49,251 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:49,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:33:49,252 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:49,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:49,252 INFO L85 PathProgramCache]: Analyzing trace with hash 644860677, now seen corresponding path program 1 times [2024-11-16 09:33:49,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:49,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195798689] [2024-11-16 09:33:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:49,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:49,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195798689] [2024-11-16 09:33:49,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195798689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:49,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:49,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:49,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536058790] [2024-11-16 09:33:49,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:49,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:49,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:49,381 INFO L87 Difference]: Start difference. First operand 1563 states and 2541 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:49,501 INFO L93 Difference]: Finished difference Result 1761 states and 2841 transitions. [2024-11-16 09:33:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:33:49,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-16 09:33:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:49,511 INFO L225 Difference]: With dead ends: 1761 [2024-11-16 09:33:49,512 INFO L226 Difference]: Without dead ends: 1728 [2024-11-16 09:33:49,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:49,515 INFO L432 NwaCegarLoop]: 1509 mSDtfsCounter, 4611 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:49,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4611 Valid, 1897 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:33:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2024-11-16 09:33:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1593. [2024-11-16 09:33:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1591 states have (on average 1.6260213702074167) internal successors, (2587), 1592 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2587 transitions. [2024-11-16 09:33:49,551 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2587 transitions. Word has length 37 [2024-11-16 09:33:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:49,552 INFO L471 AbstractCegarLoop]: Abstraction has 1593 states and 2587 transitions. [2024-11-16 09:33:49,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2587 transitions. [2024-11-16 09:33:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 09:33:49,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:49,554 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:49,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:33:49,554 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:49,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:49,555 INFO L85 PathProgramCache]: Analyzing trace with hash -769786777, now seen corresponding path program 1 times [2024-11-16 09:33:49,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:49,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303477066] [2024-11-16 09:33:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:49,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303477066] [2024-11-16 09:33:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303477066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:49,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:49,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:49,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265583668] [2024-11-16 09:33:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:49,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:49,753 INFO L87 Difference]: Start difference. First operand 1593 states and 2587 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:49,829 INFO L93 Difference]: Finished difference Result 1659 states and 2685 transitions. [2024-11-16 09:33:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:49,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 09:33:49,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:49,837 INFO L225 Difference]: With dead ends: 1659 [2024-11-16 09:33:49,837 INFO L226 Difference]: Without dead ends: 1596 [2024-11-16 09:33:49,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:33:49,841 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 2954 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2954 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:49,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2954 Valid, 1603 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2024-11-16 09:33:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1593. [2024-11-16 09:33:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1591 states have (on average 1.6253928346951603) internal successors, (2586), 1592 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2586 transitions. [2024-11-16 09:33:49,872 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2586 transitions. Word has length 39 [2024-11-16 09:33:49,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:49,873 INFO L471 AbstractCegarLoop]: Abstraction has 1593 states and 2586 transitions. [2024-11-16 09:33:49,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2586 transitions. [2024-11-16 09:33:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 09:33:49,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:49,876 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:49,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:33:49,877 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:49,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:49,877 INFO L85 PathProgramCache]: Analyzing trace with hash -664734402, now seen corresponding path program 1 times [2024-11-16 09:33:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:49,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752289801] [2024-11-16 09:33:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:49,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:49,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752289801] [2024-11-16 09:33:49,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752289801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:49,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:49,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:49,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260748738] [2024-11-16 09:33:49,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:49,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:49,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:49,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:49,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:49,959 INFO L87 Difference]: Start difference. First operand 1593 states and 2586 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:49,991 INFO L93 Difference]: Finished difference Result 1707 states and 2756 transitions. [2024-11-16 09:33:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:49,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 09:33:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:49,998 INFO L225 Difference]: With dead ends: 1707 [2024-11-16 09:33:49,998 INFO L226 Difference]: Without dead ends: 1644 [2024-11-16 09:33:50,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:50,001 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 1470 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:50,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1564 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:50,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2024-11-16 09:33:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1641. [2024-11-16 09:33:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1639 states have (on average 1.6205003050640634) internal successors, (2656), 1640 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2656 transitions. [2024-11-16 09:33:50,032 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2656 transitions. Word has length 40 [2024-11-16 09:33:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:50,033 INFO L471 AbstractCegarLoop]: Abstraction has 1641 states and 2656 transitions. [2024-11-16 09:33:50,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2656 transitions. [2024-11-16 09:33:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:50,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:50,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:50,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:33:50,036 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:50,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash 307573737, now seen corresponding path program 1 times [2024-11-16 09:33:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:50,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693007498] [2024-11-16 09:33:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:50,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693007498] [2024-11-16 09:33:50,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693007498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:50,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:50,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175097438] [2024-11-16 09:33:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:50,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:50,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:50,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:50,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:50,092 INFO L87 Difference]: Start difference. First operand 1641 states and 2656 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:50,125 INFO L93 Difference]: Finished difference Result 1762 states and 2836 transitions. [2024-11-16 09:33:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:50,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:50,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:50,183 INFO L225 Difference]: With dead ends: 1762 [2024-11-16 09:33:50,183 INFO L226 Difference]: Without dead ends: 1699 [2024-11-16 09:33:50,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:50,186 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 1480 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:50,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1598 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-11-16 09:33:50,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1696. [2024-11-16 09:33:50,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1694 states have (on average 1.615112160566706) internal successors, (2736), 1695 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2736 transitions. [2024-11-16 09:33:50,229 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2736 transitions. Word has length 41 [2024-11-16 09:33:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:50,229 INFO L471 AbstractCegarLoop]: Abstraction has 1696 states and 2736 transitions. [2024-11-16 09:33:50,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2736 transitions. [2024-11-16 09:33:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:50,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:50,230 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:50,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:33:50,231 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:50,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash 293123881, now seen corresponding path program 1 times [2024-11-16 09:33:50,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:50,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58330761] [2024-11-16 09:33:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:50,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:50,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58330761] [2024-11-16 09:33:50,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58330761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:50,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443779907] [2024-11-16 09:33:50,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:50,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:50,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:50,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:50,289 INFO L87 Difference]: Start difference. First operand 1696 states and 2736 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:50,326 INFO L93 Difference]: Finished difference Result 1998 states and 3178 transitions. [2024-11-16 09:33:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:50,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:50,334 INFO L225 Difference]: With dead ends: 1998 [2024-11-16 09:33:50,334 INFO L226 Difference]: Without dead ends: 1835 [2024-11-16 09:33:50,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:50,338 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:50,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1604 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2024-11-16 09:33:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1832. [2024-11-16 09:33:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1830 states have (on average 1.6) internal successors, (2928), 1831 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2928 transitions. [2024-11-16 09:33:50,388 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2928 transitions. Word has length 41 [2024-11-16 09:33:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:50,389 INFO L471 AbstractCegarLoop]: Abstraction has 1832 states and 2928 transitions. [2024-11-16 09:33:50,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2928 transitions. [2024-11-16 09:33:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:50,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:50,390 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:50,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:33:50,391 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:50,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1910240663, now seen corresponding path program 1 times [2024-11-16 09:33:50,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:50,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339622328] [2024-11-16 09:33:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:50,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:50,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339622328] [2024-11-16 09:33:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339622328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:50,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:50,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402065444] [2024-11-16 09:33:50,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:50,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:50,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:50,453 INFO L87 Difference]: Start difference. First operand 1832 states and 2928 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:50,500 INFO L93 Difference]: Finished difference Result 2382 states and 3712 transitions. [2024-11-16 09:33:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:50,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:50,512 INFO L225 Difference]: With dead ends: 2382 [2024-11-16 09:33:50,512 INFO L226 Difference]: Without dead ends: 2083 [2024-11-16 09:33:50,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:50,514 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 1476 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:50,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1606 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2024-11-16 09:33:50,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2080. [2024-11-16 09:33:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2078 states have (on average 1.5707410972088547) internal successors, (3264), 2079 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 3264 transitions. [2024-11-16 09:33:50,571 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 3264 transitions. Word has length 41 [2024-11-16 09:33:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:50,572 INFO L471 AbstractCegarLoop]: Abstraction has 2080 states and 3264 transitions. [2024-11-16 09:33:50,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 3264 transitions. [2024-11-16 09:33:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:50,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:50,573 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:50,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:33:50,574 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:50,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:50,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1860449578, now seen corresponding path program 1 times [2024-11-16 09:33:50,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:50,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697192954] [2024-11-16 09:33:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:50,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:50,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:50,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697192954] [2024-11-16 09:33:50,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697192954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:50,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:50,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:33:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665837387] [2024-11-16 09:33:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:50,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:33:50,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:33:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:50,804 INFO L87 Difference]: Start difference. First operand 2080 states and 3264 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:50,910 INFO L93 Difference]: Finished difference Result 2131 states and 3330 transitions. [2024-11-16 09:33:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 09:33:50,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:50,924 INFO L225 Difference]: With dead ends: 2131 [2024-11-16 09:33:50,924 INFO L226 Difference]: Without dead ends: 2128 [2024-11-16 09:33:50,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:50,926 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 0 mSDsluCounter, 9026 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10533 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:50,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10533 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2024-11-16 09:33:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2128. [2024-11-16 09:33:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2126 states have (on average 1.5559736594543745) internal successors, (3308), 2127 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 3308 transitions. [2024-11-16 09:33:50,977 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 3308 transitions. Word has length 41 [2024-11-16 09:33:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:50,977 INFO L471 AbstractCegarLoop]: Abstraction has 2128 states and 3308 transitions. [2024-11-16 09:33:50,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 3308 transitions. [2024-11-16 09:33:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:50,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:50,979 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:50,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:33:50,979 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:50,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash -636110161, now seen corresponding path program 1 times [2024-11-16 09:33:50,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:50,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28758919] [2024-11-16 09:33:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:50,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:51,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:51,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28758919] [2024-11-16 09:33:51,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28758919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:51,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:51,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:51,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400582560] [2024-11-16 09:33:51,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:51,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:51,098 INFO L87 Difference]: Start difference. First operand 2128 states and 3308 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:51,206 INFO L93 Difference]: Finished difference Result 3896 states and 5720 transitions. [2024-11-16 09:33:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 09:33:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:51,220 INFO L225 Difference]: With dead ends: 3896 [2024-11-16 09:33:51,220 INFO L226 Difference]: Without dead ends: 3461 [2024-11-16 09:33:51,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:51,224 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 3050 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:51,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3195 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2024-11-16 09:33:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2644. [2024-11-16 09:33:51,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2642 states have (on average 1.5155185465556396) internal successors, (4004), 2643 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:51,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 4004 transitions. [2024-11-16 09:33:51,291 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 4004 transitions. Word has length 58 [2024-11-16 09:33:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:51,291 INFO L471 AbstractCegarLoop]: Abstraction has 2644 states and 4004 transitions. [2024-11-16 09:33:51,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 4004 transitions. [2024-11-16 09:33:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:51,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:51,293 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:51,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:33:51,293 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:51,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash -650560017, now seen corresponding path program 1 times [2024-11-16 09:33:51,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:51,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872144322] [2024-11-16 09:33:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:51,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:33:51,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:51,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872144322] [2024-11-16 09:33:51,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872144322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:51,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:51,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:51,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350596702] [2024-11-16 09:33:51,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:51,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:51,420 INFO L87 Difference]: Start difference. First operand 2644 states and 4004 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:51,530 INFO L93 Difference]: Finished difference Result 4488 states and 6524 transitions. [2024-11-16 09:33:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:51,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 09:33:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:51,544 INFO L225 Difference]: With dead ends: 4488 [2024-11-16 09:33:51,545 INFO L226 Difference]: Without dead ends: 3893 [2024-11-16 09:33:51,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:51,548 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 3052 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:51,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 3179 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2024-11-16 09:33:51,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3452. [2024-11-16 09:33:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3450 states have (on average 1.4759420289855072) internal successors, (5092), 3451 states have internal predecessors, (5092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 5092 transitions. [2024-11-16 09:33:51,632 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 5092 transitions. Word has length 58 [2024-11-16 09:33:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:51,633 INFO L471 AbstractCegarLoop]: Abstraction has 3452 states and 5092 transitions. [2024-11-16 09:33:51,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 5092 transitions. [2024-11-16 09:33:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:51,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:51,634 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:51,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:33:51,635 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:51,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:51,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1441042735, now seen corresponding path program 1 times [2024-11-16 09:33:51,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:51,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055491152] [2024-11-16 09:33:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:51,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 09:33:51,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:51,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055491152] [2024-11-16 09:33:51,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055491152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:51,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:51,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:51,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061768075] [2024-11-16 09:33:51,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:51,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:51,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:51,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:51,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:51,714 INFO L87 Difference]: Start difference. First operand 3452 states and 5092 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:51,873 INFO L93 Difference]: Finished difference Result 5080 states and 7324 transitions. [2024-11-16 09:33:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:51,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 09:33:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:51,888 INFO L225 Difference]: With dead ends: 5080 [2024-11-16 09:33:51,889 INFO L226 Difference]: Without dead ends: 4485 [2024-11-16 09:33:51,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:51,892 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 3059 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3059 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:51,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3059 Valid, 3186 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4485 states. [2024-11-16 09:33:51,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4485 to 4044. [2024-11-16 09:33:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 4042 states have (on average 1.4576942107867392) internal successors, (5892), 4043 states have internal predecessors, (5892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 5892 transitions. [2024-11-16 09:33:51,991 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 5892 transitions. Word has length 58 [2024-11-16 09:33:51,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:51,992 INFO L471 AbstractCegarLoop]: Abstraction has 4044 states and 5892 transitions. [2024-11-16 09:33:51,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 5892 transitions. [2024-11-16 09:33:51,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:51,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:51,994 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:51,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:33:51,994 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:51,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash 872851857, now seen corresponding path program 1 times [2024-11-16 09:33:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:51,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627221484] [2024-11-16 09:33:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:51,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:52,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627221484] [2024-11-16 09:33:52,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627221484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:52,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:52,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:52,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051622934] [2024-11-16 09:33:52,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:52,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:52,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:52,063 INFO L87 Difference]: Start difference. First operand 4044 states and 5892 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:52,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:52,129 INFO L93 Difference]: Finished difference Result 6558 states and 9292 transitions. [2024-11-16 09:33:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:52,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 09:33:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:52,138 INFO L225 Difference]: With dead ends: 6558 [2024-11-16 09:33:52,138 INFO L226 Difference]: Without dead ends: 4047 [2024-11-16 09:33:52,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:52,143 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 28 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:52,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3034 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:52,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2024-11-16 09:33:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 4044. [2024-11-16 09:33:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 4042 states have (on average 1.4453240969816923) internal successors, (5842), 4043 states have internal predecessors, (5842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 5842 transitions. [2024-11-16 09:33:52,236 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 5842 transitions. Word has length 60 [2024-11-16 09:33:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:52,237 INFO L471 AbstractCegarLoop]: Abstraction has 4044 states and 5842 transitions. [2024-11-16 09:33:52,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:52,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 5842 transitions. [2024-11-16 09:33:52,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:52,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:52,238 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:52,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:33:52,238 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:52,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash -128557871, now seen corresponding path program 1 times [2024-11-16 09:33:52,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:52,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337100542] [2024-11-16 09:33:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:52,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:52,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:52,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337100542] [2024-11-16 09:33:52,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337100542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:52,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:52,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:52,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091411471] [2024-11-16 09:33:52,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:52,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:52,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:52,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:52,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:52,316 INFO L87 Difference]: Start difference. First operand 4044 states and 5842 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:52,362 INFO L93 Difference]: Finished difference Result 5039 states and 7178 transitions. [2024-11-16 09:33:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:52,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 09:33:52,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:52,369 INFO L225 Difference]: With dead ends: 5039 [2024-11-16 09:33:52,369 INFO L226 Difference]: Without dead ends: 2528 [2024-11-16 09:33:52,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:52,373 INFO L432 NwaCegarLoop]: 1531 mSDtfsCounter, 24 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:52,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2024-11-16 09:33:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2518. [2024-11-16 09:33:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.511128775834658) internal successors, (3802), 2517 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3802 transitions. [2024-11-16 09:33:52,424 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3802 transitions. Word has length 60 [2024-11-16 09:33:52,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:52,425 INFO L471 AbstractCegarLoop]: Abstraction has 2518 states and 3802 transitions. [2024-11-16 09:33:52,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3802 transitions. [2024-11-16 09:33:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 09:33:52,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:52,426 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:52,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:33:52,427 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:52,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1679113773, now seen corresponding path program 1 times [2024-11-16 09:33:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:52,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436996107] [2024-11-16 09:33:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:52,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:52,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436996107] [2024-11-16 09:33:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436996107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:52,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:52,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808732713] [2024-11-16 09:33:52,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:52,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:52,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:52,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:52,499 INFO L87 Difference]: Start difference. First operand 2518 states and 3802 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:52,531 INFO L93 Difference]: Finished difference Result 3010 states and 4454 transitions. [2024-11-16 09:33:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:52,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-16 09:33:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:52,536 INFO L225 Difference]: With dead ends: 3010 [2024-11-16 09:33:52,536 INFO L226 Difference]: Without dead ends: 2035 [2024-11-16 09:33:52,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:52,539 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 22 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:52,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3010 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2024-11-16 09:33:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2032. [2024-11-16 09:33:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 2030 states have (on average 1.5492610837438423) internal successors, (3145), 2031 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 3145 transitions. [2024-11-16 09:33:52,577 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 3145 transitions. Word has length 62 [2024-11-16 09:33:52,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:52,577 INFO L471 AbstractCegarLoop]: Abstraction has 2032 states and 3145 transitions. [2024-11-16 09:33:52,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 3145 transitions. [2024-11-16 09:33:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 09:33:52,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:52,580 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:52,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:33:52,580 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:52,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1606031738, now seen corresponding path program 1 times [2024-11-16 09:33:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508643714] [2024-11-16 09:33:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:52,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:52,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508643714] [2024-11-16 09:33:52,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508643714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:52,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276066316] [2024-11-16 09:33:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:52,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:52,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:52,996 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 09:33:52,999 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 09:33:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:53,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 09:33:53,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:55,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:59,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276066316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:59,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:59,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 18] total 44 [2024-11-16 09:33:59,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338429940] [2024-11-16 09:33:59,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:59,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 09:33:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 09:33:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1679, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 09:33:59,287 INFO L87 Difference]: Start difference. First operand 2032 states and 3145 transitions. Second operand has 44 states, 44 states have (on average 3.8636363636363638) internal successors, (170), 44 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:11,045 INFO L93 Difference]: Finished difference Result 5629 states and 7826 transitions. [2024-11-16 09:34:11,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-16 09:34:11,046 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.8636363636363638) internal successors, (170), 44 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-16 09:34:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:11,056 INFO L225 Difference]: With dead ends: 5629 [2024-11-16 09:34:11,056 INFO L226 Difference]: Without dead ends: 5140 [2024-11-16 09:34:11,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4347 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=2596, Invalid=12166, Unknown=0, NotChecked=0, Total=14762 [2024-11-16 09:34:11,062 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 14279 mSDsluCounter, 14443 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14279 SdHoareTripleChecker+Valid, 15956 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:11,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14279 Valid, 15956 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 09:34:11,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5140 states. [2024-11-16 09:34:11,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5140 to 4006. [2024-11-16 09:34:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4006 states, 4004 states have (on average 1.4168331668331668) internal successors, (5673), 4005 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4006 states to 4006 states and 5673 transitions. [2024-11-16 09:34:11,187 INFO L78 Accepts]: Start accepts. Automaton has 4006 states and 5673 transitions. Word has length 64 [2024-11-16 09:34:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:11,187 INFO L471 AbstractCegarLoop]: Abstraction has 4006 states and 5673 transitions. [2024-11-16 09:34:11,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.8636363636363638) internal successors, (170), 44 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4006 states and 5673 transitions. [2024-11-16 09:34:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 09:34:11,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:11,189 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:34:11,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:34:11,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 09:34:11,394 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:11,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:11,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1177276839, now seen corresponding path program 1 times [2024-11-16 09:34:11,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:11,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472382836] [2024-11-16 09:34:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:11,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:11,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:11,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472382836] [2024-11-16 09:34:11,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472382836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:11,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829659020] [2024-11-16 09:34:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:11,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:11,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:11,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:34:11,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:34:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:11,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 09:34:11,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:16,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:17,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829659020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:17,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:17,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 18] total 42 [2024-11-16 09:34:17,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093234055] [2024-11-16 09:34:17,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:17,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 09:34:17,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:17,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 09:34:17,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 09:34:17,707 INFO L87 Difference]: Start difference. First operand 4006 states and 5673 transitions. Second operand has 42 states, 42 states have (on average 4.119047619047619) internal successors, (173), 42 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:26,707 INFO L93 Difference]: Finished difference Result 14440 states and 19033 transitions. [2024-11-16 09:34:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-16 09:34:26,707 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.119047619047619) internal successors, (173), 42 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 09:34:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:26,727 INFO L225 Difference]: With dead ends: 14440 [2024-11-16 09:34:26,728 INFO L226 Difference]: Without dead ends: 12157 [2024-11-16 09:34:26,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4338 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=2814, Invalid=11948, Unknown=0, NotChecked=0, Total=14762 [2024-11-16 09:34:26,737 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 17198 mSDsluCounter, 17865 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17198 SdHoareTripleChecker+Valid, 19391 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:26,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17198 Valid, 19391 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 09:34:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12157 states. [2024-11-16 09:34:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12157 to 6850. [2024-11-16 09:34:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6850 states, 6848 states have (on average 1.3450642523364487) internal successors, (9211), 6849 states have internal predecessors, (9211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6850 states to 6850 states and 9211 transitions. [2024-11-16 09:34:27,009 INFO L78 Accepts]: Start accepts. Automaton has 6850 states and 9211 transitions. Word has length 65 [2024-11-16 09:34:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:27,010 INFO L471 AbstractCegarLoop]: Abstraction has 6850 states and 9211 transitions. [2024-11-16 09:34:27,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.119047619047619) internal successors, (173), 42 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6850 states and 9211 transitions. [2024-11-16 09:34:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 09:34:27,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:27,011 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] [2024-11-16 09:34:27,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 09:34:27,215 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,SelfDestructingSolverStorable16 [2024-11-16 09:34:27,216 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:27,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash -251286854, now seen corresponding path program 1 times [2024-11-16 09:34:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:27,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413040645] [2024-11-16 09:34:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:27,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:27,888 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 09:34:27,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:27,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413040645] [2024-11-16 09:34:27,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413040645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:27,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010246806] [2024-11-16 09:34:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:27,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:27,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:27,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:34:27,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:34:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:28,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 09:34:28,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:30,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:32,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010246806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:32,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:32,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 20] total 51 [2024-11-16 09:34:32,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18927794] [2024-11-16 09:34:32,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:32,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-16 09:34:32,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:32,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-16 09:34:32,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=2281, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 09:34:32,956 INFO L87 Difference]: Start difference. First operand 6850 states and 9211 transitions. Second operand has 51 states, 51 states have (on average 3.4901960784313726) internal successors, (178), 51 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:45,951 INFO L93 Difference]: Finished difference Result 15386 states and 20099 transitions. [2024-11-16 09:34:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-16 09:34:45,951 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.4901960784313726) internal successors, (178), 51 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 09:34:45,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:45,972 INFO L225 Difference]: With dead ends: 15386 [2024-11-16 09:34:45,972 INFO L226 Difference]: Without dead ends: 12521 [2024-11-16 09:34:45,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7335 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=4303, Invalid=19259, Unknown=0, NotChecked=0, Total=23562 [2024-11-16 09:34:45,983 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 20480 mSDsluCounter, 26870 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20480 SdHoareTripleChecker+Valid, 28420 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:45,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20480 Valid, 28420 Invalid, 2606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 09:34:45,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12521 states. [2024-11-16 09:34:46,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12521 to 7758. [2024-11-16 09:34:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 7756 states have (on average 1.337287261474987) internal successors, (10372), 7757 states have internal predecessors, (10372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 10372 transitions. [2024-11-16 09:34:46,309 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 10372 transitions. Word has length 66 [2024-11-16 09:34:46,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:46,310 INFO L471 AbstractCegarLoop]: Abstraction has 7758 states and 10372 transitions. [2024-11-16 09:34:46,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.4901960784313726) internal successors, (178), 51 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 10372 transitions. [2024-11-16 09:34:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 09:34:46,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:46,311 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] [2024-11-16 09:34:46,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 09:34:46,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 09:34:46,516 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:46,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1189865948, now seen corresponding path program 1 times [2024-11-16 09:34:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:46,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500630734] [2024-11-16 09:34:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:46,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:34:46,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500630734] [2024-11-16 09:34:46,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500630734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:46,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077656891] [2024-11-16 09:34:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:46,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:46,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:46,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:34:46,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 09:34:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:46,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 09:34:46,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:47,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:47,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077656891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:47,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:47,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 13 [2024-11-16 09:34:47,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520809323] [2024-11-16 09:34:47,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:47,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 09:34:47,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:47,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 09:34:47,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-16 09:34:47,298 INFO L87 Difference]: Start difference. First operand 7758 states and 10372 transitions. Second operand has 13 states, 13 states have (on average 14.076923076923077) internal successors, (183), 13 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:48,162 INFO L93 Difference]: Finished difference Result 22367 states and 28598 transitions. [2024-11-16 09:34:48,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 09:34:48,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.076923076923077) internal successors, (183), 13 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 09:34:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:48,185 INFO L225 Difference]: With dead ends: 22367 [2024-11-16 09:34:48,185 INFO L226 Difference]: Without dead ends: 15920 [2024-11-16 09:34:48,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-16 09:34:48,192 INFO L432 NwaCegarLoop]: 1567 mSDtfsCounter, 3007 mSDsluCounter, 6174 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3007 SdHoareTripleChecker+Valid, 7741 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:48,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3007 Valid, 7741 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:34:48,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15920 states. [2024-11-16 09:34:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15920 to 15374. [2024-11-16 09:34:48,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15374 states, 15372 states have (on average 1.2577413479052824) internal successors, (19334), 15373 states have internal predecessors, (19334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15374 states to 15374 states and 19334 transitions. [2024-11-16 09:34:48,827 INFO L78 Accepts]: Start accepts. Automaton has 15374 states and 19334 transitions. Word has length 68 [2024-11-16 09:34:48,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:48,828 INFO L471 AbstractCegarLoop]: Abstraction has 15374 states and 19334 transitions. [2024-11-16 09:34:48,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.076923076923077) internal successors, (183), 13 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 15374 states and 19334 transitions. [2024-11-16 09:34:48,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-16 09:34:48,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:48,830 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:34:48,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 09:34:49,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:49,034 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:49,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1815017054, now seen corresponding path program 1 times [2024-11-16 09:34:49,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:49,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196623179] [2024-11-16 09:34:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:49,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:49,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196623179] [2024-11-16 09:34:49,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196623179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:34:49,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:34:49,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:34:49,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283274603] [2024-11-16 09:34:49,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:34:49,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:34:49,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:34:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:34:49,102 INFO L87 Difference]: Start difference. First operand 15374 states and 19334 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)