./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label26.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/eca-rers2012/Problem13_label26.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 f7d9d441800fd040181450c0920264f1b228689c17b8db097e43b17ec5ad46cc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:00:13,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:00:13,430 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:00:13,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:00:13,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:00:13,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:00:13,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:00:13,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:00:13,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:00:13,469 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:00:13,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:00:13,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:00:13,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:00:13,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:00:13,471 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:00:13,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:00:13,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:00:13,475 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:00:13,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:00:13,476 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:00:13,476 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:00:13,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:00:13,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:00:13,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:00:13,477 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:00:13,477 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:00:13,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:00:13,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:00:13,478 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:00:13,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:00:13,478 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:00:13,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:00:13,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:00:13,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:00:13,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:00:13,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:00:13,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:00:13,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:00:13,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:00:13,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:00:13,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:00:13,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:00:13,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7d9d441800fd040181450c0920264f1b228689c17b8db097e43b17ec5ad46cc [2024-11-16 04:00:13,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:00:13,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:00:13,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:00:13,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:00:13,772 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:00:13,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label26.c [2024-11-16 04:00:15,070 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:00:15,544 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:00:15,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label26.c [2024-11-16 04:00:15,582 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/146fc741a/4aa27755e40648159aee9d4600d61011/FLAG41754a34c [2024-11-16 04:00:15,669 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/146fc741a/4aa27755e40648159aee9d4600d61011 [2024-11-16 04:00:15,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:00:15,672 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:00:15,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:00:15,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:00:15,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:00:15,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:00:15" (1/1) ... [2024-11-16 04:00:15,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0a66c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:15, skipping insertion in model container [2024-11-16 04:00:15,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:00:15" (1/1) ... [2024-11-16 04:00:15,810 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:00:16,135 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/eca-rers2012/Problem13_label26.c[5554,5567] [2024-11-16 04:00:16,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:00:17,001 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:00:17,024 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/eca-rers2012/Problem13_label26.c[5554,5567] [2024-11-16 04:00:17,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:00:17,532 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:00:17,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17 WrapperNode [2024-11-16 04:00:17,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:00:17,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:00:17,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:00:17,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:00:17,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:17,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:18,090 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-16 04:00:18,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:00:18,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:00:18,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:00:18,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:00:18,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:18,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:18,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:18,557 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 04:00:18,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:18,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:18,832 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:18,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:18,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:18,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:19,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:00:19,013 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:00:19,014 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:00:19,014 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:00:19,015 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (1/1) ... [2024-11-16 04:00:19,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:00:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:19,046 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 04:00:19,048 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 04:00:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:00:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:00:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:00:19,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:00:19,154 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:00:19,156 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:00:24,517 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-16 04:00:24,518 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-16 04:00:24,518 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-16 04:00:24,718 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-16 04:00:24,719 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:00:24,761 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:00:24,761 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:00:24,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:00:24 BoogieIcfgContainer [2024-11-16 04:00:24,762 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:00:24,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:00:24,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:00:24,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:00:24,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:00:15" (1/3) ... [2024-11-16 04:00:24,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ffd233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:00:24, skipping insertion in model container [2024-11-16 04:00:24,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:17" (2/3) ... [2024-11-16 04:00:24,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ffd233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:00:24, skipping insertion in model container [2024-11-16 04:00:24,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:00:24" (3/3) ... [2024-11-16 04:00:24,772 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26.c [2024-11-16 04:00:24,788 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:00:24,789 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:00:24,888 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:00:24,894 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;@989231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:00:24,898 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:00:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 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 04:00:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 04:00:24,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:24,919 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 04:00:24,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:24,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:24,926 INFO L85 PathProgramCache]: Analyzing trace with hash 973100616, now seen corresponding path program 1 times [2024-11-16 04:00:24,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:24,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804833192] [2024-11-16 04:00:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:25,302 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 04:00:25,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:25,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804833192] [2024-11-16 04:00:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804833192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:25,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:25,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144449356] [2024-11-16 04:00:25,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:25,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:25,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:25,328 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 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 13.333333333333334) internal successors, (40), 2 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 04:00:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:29,155 INFO L93 Difference]: Finished difference Result 3088 states and 5695 transitions. [2024-11-16 04:00:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:29,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 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 04:00:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:29,191 INFO L225 Difference]: With dead ends: 3088 [2024-11-16 04:00:29,191 INFO L226 Difference]: Without dead ends: 1902 [2024-11-16 04:00:29,201 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 04:00:29,206 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 1001 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:29,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 650 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-16 04:00:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2024-11-16 04:00:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1897. [2024-11-16 04:00:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1897 states, 1896 states have (on average 1.7362869198312236) internal successors, (3292), 1896 states have internal predecessors, (3292), 0 states have call successors, (0), 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 04:00:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 3292 transitions. [2024-11-16 04:00:29,346 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 3292 transitions. Word has length 40 [2024-11-16 04:00:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:29,347 INFO L471 AbstractCegarLoop]: Abstraction has 1897 states and 3292 transitions. [2024-11-16 04:00:29,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 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 04:00:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 3292 transitions. [2024-11-16 04:00:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 04:00:29,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:29,351 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:00:29,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:00:29,352 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:29,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1339879889, now seen corresponding path program 1 times [2024-11-16 04:00:29,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:29,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428376415] [2024-11-16 04:00:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:29,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:29,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428376415] [2024-11-16 04:00:29,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428376415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:29,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:29,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371089840] [2024-11-16 04:00:29,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:29,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:29,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:29,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:29,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:29,693 INFO L87 Difference]: Start difference. First operand 1897 states and 3292 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 04:00:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:33,544 INFO L93 Difference]: Finished difference Result 5445 states and 9574 transitions. [2024-11-16 04:00:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:33,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2024-11-16 04:00:33,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:33,558 INFO L225 Difference]: With dead ends: 5445 [2024-11-16 04:00:33,559 INFO L226 Difference]: Without dead ends: 3550 [2024-11-16 04:00:33,563 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 04:00:33,564 INFO L432 NwaCegarLoop]: 747 mSDtfsCounter, 815 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 3127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:33,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 885 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 3127 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-16 04:00:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2024-11-16 04:00:33,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3489. [2024-11-16 04:00:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3489 states, 3488 states have (on average 1.5857224770642202) internal successors, (5531), 3488 states have internal predecessors, (5531), 0 states have call successors, (0), 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 04:00:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 5531 transitions. [2024-11-16 04:00:33,629 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 5531 transitions. Word has length 106 [2024-11-16 04:00:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:33,630 INFO L471 AbstractCegarLoop]: Abstraction has 3489 states and 5531 transitions. [2024-11-16 04:00:33,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 04:00:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 5531 transitions. [2024-11-16 04:00:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 04:00:33,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:33,635 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:00:33,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:00:33,636 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:33,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1394021247, now seen corresponding path program 1 times [2024-11-16 04:00:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:33,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413469188] [2024-11-16 04:00:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:33,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:33,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:33,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413469188] [2024-11-16 04:00:33,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413469188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:33,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:33,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:33,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451462226] [2024-11-16 04:00:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:33,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:33,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:33,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:33,857 INFO L87 Difference]: Start difference. First operand 3489 states and 5531 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 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 04:00:37,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:37,623 INFO L93 Difference]: Finished difference Result 10152 states and 16148 transitions. [2024-11-16 04:00:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:37,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2024-11-16 04:00:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:37,650 INFO L225 Difference]: With dead ends: 10152 [2024-11-16 04:00:37,653 INFO L226 Difference]: Without dead ends: 6665 [2024-11-16 04:00:37,659 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 04:00:37,662 INFO L432 NwaCegarLoop]: 985 mSDtfsCounter, 872 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 3256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:37,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1139 Invalid, 3256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-16 04:00:37,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2024-11-16 04:00:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6664. [2024-11-16 04:00:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6664 states, 6663 states have (on average 1.4166291460303166) internal successors, (9439), 6663 states have internal predecessors, (9439), 0 states have call successors, (0), 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 04:00:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6664 states to 6664 states and 9439 transitions. [2024-11-16 04:00:37,815 INFO L78 Accepts]: Start accepts. Automaton has 6664 states and 9439 transitions. Word has length 107 [2024-11-16 04:00:37,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:37,817 INFO L471 AbstractCegarLoop]: Abstraction has 6664 states and 9439 transitions. [2024-11-16 04:00:37,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 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 04:00:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6664 states and 9439 transitions. [2024-11-16 04:00:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-16 04:00:37,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:37,822 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:00:37,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:00:37,823 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:37,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:37,823 INFO L85 PathProgramCache]: Analyzing trace with hash -597124409, now seen corresponding path program 1 times [2024-11-16 04:00:37,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:37,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186675441] [2024-11-16 04:00:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:37,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:38,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186675441] [2024-11-16 04:00:38,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186675441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:38,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:38,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:38,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924169945] [2024-11-16 04:00:38,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:38,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:38,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:38,022 INFO L87 Difference]: Start difference. First operand 6664 states and 9439 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 04:00:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:41,581 INFO L93 Difference]: Finished difference Result 14139 states and 20692 transitions. [2024-11-16 04:00:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:41,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-11-16 04:00:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:41,604 INFO L225 Difference]: With dead ends: 14139 [2024-11-16 04:00:41,604 INFO L226 Difference]: Without dead ends: 7477 [2024-11-16 04:00:41,614 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 04:00:41,615 INFO L432 NwaCegarLoop]: 1045 mSDtfsCounter, 873 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 3381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:41,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1179 Invalid, 3381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-16 04:00:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2024-11-16 04:00:41,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7466. [2024-11-16 04:00:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7466 states, 7465 states have (on average 1.3385130609511051) internal successors, (9992), 7465 states have internal predecessors, (9992), 0 states have call successors, (0), 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 04:00:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7466 states to 7466 states and 9992 transitions. [2024-11-16 04:00:41,738 INFO L78 Accepts]: Start accepts. Automaton has 7466 states and 9992 transitions. Word has length 110 [2024-11-16 04:00:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:41,739 INFO L471 AbstractCegarLoop]: Abstraction has 7466 states and 9992 transitions. [2024-11-16 04:00:41,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 04:00:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7466 states and 9992 transitions. [2024-11-16 04:00:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-16 04:00:41,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:41,742 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:41,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:00:41,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:41,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:41,744 INFO L85 PathProgramCache]: Analyzing trace with hash 631954230, now seen corresponding path program 1 times [2024-11-16 04:00:41,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:41,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729647797] [2024-11-16 04:00:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:41,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:42,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729647797] [2024-11-16 04:00:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729647797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:42,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:42,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758923603] [2024-11-16 04:00:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:42,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:42,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:42,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:42,141 INFO L87 Difference]: Start difference. First operand 7466 states and 9992 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 04:00:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:44,593 INFO L93 Difference]: Finished difference Result 14142 states and 19169 transitions. [2024-11-16 04:00:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:44,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2024-11-16 04:00:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:44,615 INFO L225 Difference]: With dead ends: 14142 [2024-11-16 04:00:44,616 INFO L226 Difference]: Without dead ends: 7466 [2024-11-16 04:00:44,624 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 04:00:44,625 INFO L432 NwaCegarLoop]: 1088 mSDtfsCounter, 678 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:44,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1219 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:00:44,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7466 states. [2024-11-16 04:00:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7466 to 7466. [2024-11-16 04:00:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7466 states, 7465 states have (on average 1.335833891493637) internal successors, (9972), 7465 states have internal predecessors, (9972), 0 states have call successors, (0), 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 04:00:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7466 states to 7466 states and 9972 transitions. [2024-11-16 04:00:44,744 INFO L78 Accepts]: Start accepts. Automaton has 7466 states and 9972 transitions. Word has length 152 [2024-11-16 04:00:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:44,745 INFO L471 AbstractCegarLoop]: Abstraction has 7466 states and 9972 transitions. [2024-11-16 04:00:44,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 04:00:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7466 states and 9972 transitions. [2024-11-16 04:00:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-16 04:00:44,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:44,747 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 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 04:00:44,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:00:44,747 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:44,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1835830644, now seen corresponding path program 1 times [2024-11-16 04:00:44,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:44,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946320308] [2024-11-16 04:00:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:44,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 04:00:44,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:44,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946320308] [2024-11-16 04:00:44,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946320308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:44,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:44,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:44,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567695493] [2024-11-16 04:00:44,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:44,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:44,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:44,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:44,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:44,925 INFO L87 Difference]: Start difference. First operand 7466 states and 9972 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 04:00:47,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:47,874 INFO L93 Difference]: Finished difference Result 19682 states and 27017 transitions. [2024-11-16 04:00:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:47,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 166 [2024-11-16 04:00:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:47,900 INFO L225 Difference]: With dead ends: 19682 [2024-11-16 04:00:47,901 INFO L226 Difference]: Without dead ends: 13006 [2024-11-16 04:00:47,968 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 04:00:47,973 INFO L432 NwaCegarLoop]: 1054 mSDtfsCounter, 743 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:47,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1207 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 04:00:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13006 states. [2024-11-16 04:00:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13006 to 12989. [2024-11-16 04:00:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12989 states, 12988 states have (on average 1.2356020942408377) internal successors, (16048), 12988 states have internal predecessors, (16048), 0 states have call successors, (0), 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 04:00:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12989 states to 12989 states and 16048 transitions. [2024-11-16 04:00:48,138 INFO L78 Accepts]: Start accepts. Automaton has 12989 states and 16048 transitions. Word has length 166 [2024-11-16 04:00:48,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:48,138 INFO L471 AbstractCegarLoop]: Abstraction has 12989 states and 16048 transitions. [2024-11-16 04:00:48,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 04:00:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand 12989 states and 16048 transitions. [2024-11-16 04:00:48,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-16 04:00:48,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:48,142 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:00:48,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:00:48,143 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:48,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2005995107, now seen corresponding path program 1 times [2024-11-16 04:00:48,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:48,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770575751] [2024-11-16 04:00:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:48,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:48,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:48,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770575751] [2024-11-16 04:00:48,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770575751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:48,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:48,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:00:48,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896597437] [2024-11-16 04:00:48,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:48,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:48,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:48,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:48,505 INFO L87 Difference]: Start difference. First operand 12989 states and 16048 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 04:00:51,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:51,622 INFO L93 Difference]: Finished difference Result 31521 states and 40027 transitions. [2024-11-16 04:00:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:51,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2024-11-16 04:00:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:51,651 INFO L225 Difference]: With dead ends: 31521 [2024-11-16 04:00:51,651 INFO L226 Difference]: Without dead ends: 19322 [2024-11-16 04:00:51,665 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 04:00:51,666 INFO L432 NwaCegarLoop]: 1780 mSDtfsCounter, 776 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:51,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1923 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 04:00:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19322 states. [2024-11-16 04:00:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19322 to 19298. [2024-11-16 04:00:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19298 states, 19297 states have (on average 1.191946934756698) internal successors, (23001), 19297 states have internal predecessors, (23001), 0 states have call successors, (0), 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 04:00:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19298 states to 19298 states and 23001 transitions. [2024-11-16 04:00:51,899 INFO L78 Accepts]: Start accepts. Automaton has 19298 states and 23001 transitions. Word has length 254 [2024-11-16 04:00:51,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:51,900 INFO L471 AbstractCegarLoop]: Abstraction has 19298 states and 23001 transitions. [2024-11-16 04:00:51,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 04:00:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 19298 states and 23001 transitions. [2024-11-16 04:00:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-16 04:00:51,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:51,905 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:00:51,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:00:51,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:51,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1473268211, now seen corresponding path program 1 times [2024-11-16 04:00:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:51,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237424310] [2024-11-16 04:00:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:51,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:52,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:52,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237424310] [2024-11-16 04:00:52,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237424310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:52,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:52,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:00:52,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331735093] [2024-11-16 04:00:52,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:52,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:52,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:52,061 INFO L87 Difference]: Start difference. First operand 19298 states and 23001 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 04:00:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:55,525 INFO L93 Difference]: Finished difference Result 53556 states and 64396 transitions. [2024-11-16 04:00:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:55,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2024-11-16 04:00:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:55,597 INFO L225 Difference]: With dead ends: 53556 [2024-11-16 04:00:55,597 INFO L226 Difference]: Without dead ends: 33468 [2024-11-16 04:00:55,623 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 04:00:55,623 INFO L432 NwaCegarLoop]: 1675 mSDtfsCounter, 953 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 3225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:55,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 1815 Invalid, 3225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 04:00:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33468 states. [2024-11-16 04:00:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33468 to 31885. [2024-11-16 04:00:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31885 states, 31884 states have (on average 1.1617425668046668) internal successors, (37041), 31884 states have internal predecessors, (37041), 0 states have call successors, (0), 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 04:00:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31885 states to 31885 states and 37041 transitions. [2024-11-16 04:00:55,986 INFO L78 Accepts]: Start accepts. Automaton has 31885 states and 37041 transitions. Word has length 256 [2024-11-16 04:00:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:55,987 INFO L471 AbstractCegarLoop]: Abstraction has 31885 states and 37041 transitions. [2024-11-16 04:00:55,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 04:00:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 31885 states and 37041 transitions. [2024-11-16 04:00:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-16 04:00:55,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:55,992 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:55,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:00:55,992 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:55,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:55,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1238478018, now seen corresponding path program 1 times [2024-11-16 04:00:55,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:55,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027769129] [2024-11-16 04:00:55,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:55,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 76 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:57,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027769129] [2024-11-16 04:00:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027769129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:00:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720823254] [2024-11-16 04:00:57,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:57,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:57,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:57,183 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 04:00:57,184 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 04:00:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:57,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:00:57,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:00:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-16 04:00:57,456 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:00:57,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720823254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:57,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:00:57,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 04:00:57,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271791182] [2024-11-16 04:00:57,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:57,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:57,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:57,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:00:57,461 INFO L87 Difference]: Start difference. First operand 31885 states and 37041 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 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 04:01:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:00,083 INFO L93 Difference]: Finished difference Result 62978 states and 73286 transitions. [2024-11-16 04:01:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:00,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 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 283 [2024-11-16 04:01:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:00,133 INFO L225 Difference]: With dead ends: 62978 [2024-11-16 04:01:00,134 INFO L226 Difference]: Without dead ends: 31883 [2024-11-16 04:01:00,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:01:00,163 INFO L432 NwaCegarLoop]: 1361 mSDtfsCounter, 1169 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:00,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1444 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:01:00,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31883 states. [2024-11-16 04:01:00,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31883 to 31882. [2024-11-16 04:01:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31882 states, 31881 states have (on average 1.1249960791694114) internal successors, (35866), 31881 states have internal predecessors, (35866), 0 states have call successors, (0), 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 04:01:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31882 states to 31882 states and 35866 transitions. [2024-11-16 04:01:00,510 INFO L78 Accepts]: Start accepts. Automaton has 31882 states and 35866 transitions. Word has length 283 [2024-11-16 04:01:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:00,511 INFO L471 AbstractCegarLoop]: Abstraction has 31882 states and 35866 transitions. [2024-11-16 04:01:00,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 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 04:01:00,511 INFO L276 IsEmpty]: Start isEmpty. Operand 31882 states and 35866 transitions. [2024-11-16 04:01:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-16 04:01:00,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:00,517 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:00,535 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 04:01:00,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:01:00,719 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:00,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:00,719 INFO L85 PathProgramCache]: Analyzing trace with hash 87224601, now seen corresponding path program 1 times [2024-11-16 04:01:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:00,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437338334] [2024-11-16 04:01:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:00,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-16 04:01:01,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:01,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437338334] [2024-11-16 04:01:01,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437338334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:01,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:01,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979843461] [2024-11-16 04:01:01,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:01,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:01,050 INFO L87 Difference]: Start difference. First operand 31882 states and 35866 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 04:01:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:04,173 INFO L93 Difference]: Finished difference Result 74802 states and 85389 transitions. [2024-11-16 04:01:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:04,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 333 [2024-11-16 04:01:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:04,225 INFO L225 Difference]: With dead ends: 74802 [2024-11-16 04:01:04,225 INFO L226 Difference]: Without dead ends: 43710 [2024-11-16 04:01:04,251 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 04:01:04,252 INFO L432 NwaCegarLoop]: 1802 mSDtfsCounter, 825 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 3260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:04,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1947 Invalid, 3260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-16 04:01:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43710 states. [2024-11-16 04:01:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43710 to 42918. [2024-11-16 04:01:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42918 states, 42917 states have (on average 1.1090243959270218) internal successors, (47596), 42917 states have internal predecessors, (47596), 0 states have call successors, (0), 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 04:01:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42918 states to 42918 states and 47596 transitions. [2024-11-16 04:01:04,641 INFO L78 Accepts]: Start accepts. Automaton has 42918 states and 47596 transitions. Word has length 333 [2024-11-16 04:01:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:04,642 INFO L471 AbstractCegarLoop]: Abstraction has 42918 states and 47596 transitions. [2024-11-16 04:01:04,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 04:01:04,642 INFO L276 IsEmpty]: Start isEmpty. Operand 42918 states and 47596 transitions. [2024-11-16 04:01:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-16 04:01:04,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:04,649 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:04,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:01:04,649 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:04,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1630912971, now seen corresponding path program 1 times [2024-11-16 04:01:04,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:04,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898359097] [2024-11-16 04:01:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:04,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 207 proven. 111 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-16 04:01:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:05,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898359097] [2024-11-16 04:01:05,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898359097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:01:05,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632844646] [2024-11-16 04:01:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:05,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:01:05,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:01:05,717 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 04:01:05,719 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 04:01:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:05,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:01:05,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:01:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-16 04:01:05,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:01:05,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632844646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:05,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:01:05,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 04:01:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569956946] [2024-11-16 04:01:05,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:05,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:01:05,966 INFO L87 Difference]: Start difference. First operand 42918 states and 47596 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 04:01:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:08,592 INFO L93 Difference]: Finished difference Result 85037 states and 94389 transitions. [2024-11-16 04:01:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:08,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 349 [2024-11-16 04:01:08,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:08,634 INFO L225 Difference]: With dead ends: 85037 [2024-11-16 04:01:08,634 INFO L226 Difference]: Without dead ends: 42909 [2024-11-16 04:01:08,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:01:08,667 INFO L432 NwaCegarLoop]: 676 mSDtfsCounter, 1075 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:08,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 801 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:01:08,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42909 states. [2024-11-16 04:01:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42909 to 42908. [2024-11-16 04:01:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42908 states, 42907 states have (on average 1.0796140489896753) internal successors, (46323), 42907 states have internal predecessors, (46323), 0 states have call successors, (0), 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 04:01:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42908 states to 42908 states and 46323 transitions. [2024-11-16 04:01:09,321 INFO L78 Accepts]: Start accepts. Automaton has 42908 states and 46323 transitions. Word has length 349 [2024-11-16 04:01:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:09,321 INFO L471 AbstractCegarLoop]: Abstraction has 42908 states and 46323 transitions. [2024-11-16 04:01:09,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 04:01:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 42908 states and 46323 transitions. [2024-11-16 04:01:09,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-16 04:01:09,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:09,329 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:01:09,347 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 04:01:09,529 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,SelfDestructingSolverStorable10 [2024-11-16 04:01:09,530 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:09,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1435387053, now seen corresponding path program 1 times [2024-11-16 04:01:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:09,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221807844] [2024-11-16 04:01:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-16 04:01:09,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221807844] [2024-11-16 04:01:09,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221807844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:09,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:09,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:09,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76347654] [2024-11-16 04:01:09,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:09,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:01:09,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:01:09,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:01:09,808 INFO L87 Difference]: Start difference. First operand 42908 states and 46323 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 04:01:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:16,846 INFO L93 Difference]: Finished difference Result 147492 states and 159487 transitions. [2024-11-16 04:01:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:01:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 392 [2024-11-16 04:01:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:16,971 INFO L225 Difference]: With dead ends: 147492 [2024-11-16 04:01:16,971 INFO L226 Difference]: Without dead ends: 105374 [2024-11-16 04:01:17,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:01:17,008 INFO L432 NwaCegarLoop]: 555 mSDtfsCounter, 1706 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 6594 mSolverCounterSat, 1029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 7623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 6594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:17,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 796 Invalid, 7623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1029 Valid, 6594 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-16 04:01:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105374 states. [2024-11-16 04:01:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105374 to 102874. [2024-11-16 04:01:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102874 states, 102873 states have (on average 1.0723319043869626) internal successors, (110314), 102873 states have internal predecessors, (110314), 0 states have call successors, (0), 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 04:01:18,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102874 states to 102874 states and 110314 transitions. [2024-11-16 04:01:18,483 INFO L78 Accepts]: Start accepts. Automaton has 102874 states and 110314 transitions. Word has length 392 [2024-11-16 04:01:18,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:18,483 INFO L471 AbstractCegarLoop]: Abstraction has 102874 states and 110314 transitions. [2024-11-16 04:01:18,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 04:01:18,484 INFO L276 IsEmpty]: Start isEmpty. Operand 102874 states and 110314 transitions. [2024-11-16 04:01:18,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2024-11-16 04:01:18,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:18,493 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:01:18,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:01:18,494 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:18,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:18,494 INFO L85 PathProgramCache]: Analyzing trace with hash -114872772, now seen corresponding path program 1 times [2024-11-16 04:01:18,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:18,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660142956] [2024-11-16 04:01:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:18,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 375 proven. 114 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-16 04:01:20,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:20,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660142956] [2024-11-16 04:01:20,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660142956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:01:20,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933317842] [2024-11-16 04:01:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:20,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:01:20,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:01:20,067 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 04:01:20,068 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 04:01:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:20,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:01:20,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:01:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2024-11-16 04:01:20,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:01:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933317842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:20,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:01:20,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-16 04:01:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993029324] [2024-11-16 04:01:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:20,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:01:20,301 INFO L87 Difference]: Start difference. First operand 102874 states and 110314 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 04:01:23,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:23,561 INFO L93 Difference]: Finished difference Result 206535 states and 221422 transitions. [2024-11-16 04:01:23,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:23,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 435 [2024-11-16 04:01:23,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:23,691 INFO L225 Difference]: With dead ends: 206535 [2024-11-16 04:01:23,691 INFO L226 Difference]: Without dead ends: 104451 [2024-11-16 04:01:23,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:01:23,741 INFO L432 NwaCegarLoop]: 1386 mSDtfsCounter, 1001 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:23,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1472 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 04:01:23,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104451 states. [2024-11-16 04:01:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104451 to 102861. [2024-11-16 04:01:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102861 states, 102860 states have (on average 1.060023332685203) internal successors, (109034), 102860 states have internal predecessors, (109034), 0 states have call successors, (0), 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 04:01:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102861 states to 102861 states and 109034 transitions. [2024-11-16 04:01:25,294 INFO L78 Accepts]: Start accepts. Automaton has 102861 states and 109034 transitions. Word has length 435 [2024-11-16 04:01:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:25,295 INFO L471 AbstractCegarLoop]: Abstraction has 102861 states and 109034 transitions. [2024-11-16 04:01:25,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 04:01:25,299 INFO L276 IsEmpty]: Start isEmpty. Operand 102861 states and 109034 transitions. [2024-11-16 04:01:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-16 04:01:25,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:25,320 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:01:25,360 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 04:01:25,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:01:25,521 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:25,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:25,521 INFO L85 PathProgramCache]: Analyzing trace with hash 306034219, now seen corresponding path program 1 times [2024-11-16 04:01:25,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:25,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587259239] [2024-11-16 04:01:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:25,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 414 proven. 111 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-16 04:01:26,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:26,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587259239] [2024-11-16 04:01:26,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587259239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:01:26,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84377412] [2024-11-16 04:01:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:26,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:01:26,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:01:26,734 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 04:01:26,735 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 04:01:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:26,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:01:26,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:01:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-16 04:01:27,016 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:01:27,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84377412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:27,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:01:27,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 04:01:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707277693] [2024-11-16 04:01:27,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:27,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:27,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:27,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:01:27,019 INFO L87 Difference]: Start difference. First operand 102861 states and 109034 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 04:01:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:30,340 INFO L93 Difference]: Finished difference Result 230160 states and 245122 transitions. [2024-11-16 04:01:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:30,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 453 [2024-11-16 04:01:30,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:30,487 INFO L225 Difference]: With dead ends: 230160 [2024-11-16 04:01:30,487 INFO L226 Difference]: Without dead ends: 128089 [2024-11-16 04:01:30,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:01:30,523 INFO L432 NwaCegarLoop]: 1628 mSDtfsCounter, 859 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:30,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1750 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 04:01:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128089 states.