./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label16.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/Problem12_label16.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 8986a14436e34fef464bf499036d3f2f22e9dee8c68dd84a0eb0b1e3795f6f62 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:53:26,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:53:26,317 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:53:26,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:53:26,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:53:26,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:53:26,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:53:26,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:53:26,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:53:26,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:53:26,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:53:26,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:53:26,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:53:26,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:53:26,367 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:53:26,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:53:26,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:53:26,368 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:53:26,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:53:26,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:53:26,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:53:26,373 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:53:26,373 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:53:26,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:53:26,374 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:53:26,374 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:53:26,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:53:26,374 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:53:26,375 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:53:26,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:53:26,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:53:26,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:53:26,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:53:26,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:53:26,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:53:26,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:53:26,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:53:26,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:53:26,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:53:26,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:53:26,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:53:26,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:53:26,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8986a14436e34fef464bf499036d3f2f22e9dee8c68dd84a0eb0b1e3795f6f62 [2024-11-16 03:53:26,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:53:26,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:53:26,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:53:26,691 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:53:26,692 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:53:26,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label16.c [2024-11-16 03:53:28,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:53:28,557 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:53:28,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label16.c [2024-11-16 03:53:28,592 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ea4fa3c/29115351a7914c998753f81aa36b857d/FLAG773ed79ed [2024-11-16 03:53:28,611 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ea4fa3c/29115351a7914c998753f81aa36b857d [2024-11-16 03:53:28,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:53:28,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:53:28,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:53:28,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:53:28,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:53:28,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:28" (1/1) ... [2024-11-16 03:53:28,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3891557f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:28, skipping insertion in model container [2024-11-16 03:53:28,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:28" (1/1) ... [2024-11-16 03:53:28,724 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:53:29,075 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/Problem12_label16.c[8006,8019] [2024-11-16 03:53:29,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:53:29,793 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:53:29,819 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/Problem12_label16.c[8006,8019] [2024-11-16 03:53:30,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:53:30,236 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:53:30,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30 WrapperNode [2024-11-16 03:53:30,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:53:30,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:53:30,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:53:30,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:53:30,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:30,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:30,672 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-16 03:53:30,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:53:30,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:53:30,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:53:30,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:53:30,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:30,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:30,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:30,916 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 03:53:30,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:30,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:31,040 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:31,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:31,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:31,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:31,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:53:31,141 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:53:31,142 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:53:31,142 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:53:31,143 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (1/1) ... [2024-11-16 03:53:31,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:53:31,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:53:31,178 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 03:53:31,181 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 03:53:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:53:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:53:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:53:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:53:31,307 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:53:31,309 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:53:35,376 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-16 03:53:35,377 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-16 03:53:35,377 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-16 03:53:35,621 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-16 03:53:35,621 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:53:35,650 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:53:35,651 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:53:35,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:53:35 BoogieIcfgContainer [2024-11-16 03:53:35,651 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:53:35,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:53:35,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:53:35,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:53:35,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:53:28" (1/3) ... [2024-11-16 03:53:35,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557b0ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:35, skipping insertion in model container [2024-11-16 03:53:35,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:30" (2/3) ... [2024-11-16 03:53:35,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557b0ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:35, skipping insertion in model container [2024-11-16 03:53:35,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:53:35" (3/3) ... [2024-11-16 03:53:35,661 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2024-11-16 03:53:35,679 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:53:35,680 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:53:35,770 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:53:35,777 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;@8f09fc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:53:35,777 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:53:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 1.9145299145299146) internal successors, (1568), 820 states have internal predecessors, (1568), 0 states have call successors, (0), 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 03:53:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 03:53:35,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:35,797 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:53:35,798 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:35,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2032390789, now seen corresponding path program 1 times [2024-11-16 03:53:35,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:35,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540576108] [2024-11-16 03:53:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:35,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:36,181 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 03:53:36,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:36,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540576108] [2024-11-16 03:53:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540576108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:36,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:36,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:53:36,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567018121] [2024-11-16 03:53:36,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:36,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:36,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:36,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:36,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:53:36,219 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 1.9145299145299146) internal successors, (1568), 820 states have internal predecessors, (1568), 0 states have call successors, (0), 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 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:53:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:39,704 INFO L93 Difference]: Finished difference Result 2410 states and 4651 transitions. [2024-11-16 03:53:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:39,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 03:53:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:39,725 INFO L225 Difference]: With dead ends: 2410 [2024-11-16 03:53:39,725 INFO L226 Difference]: Without dead ends: 1509 [2024-11-16 03:53:39,730 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 03:53:39,733 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 755 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:39,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 529 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 03:53:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-16 03:53:39,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-16 03:53:39,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 1.6054376657824934) internal successors, (2421), 1508 states have internal predecessors, (2421), 0 states have call successors, (0), 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 03:53:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2421 transitions. [2024-11-16 03:53:39,856 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2421 transitions. Word has length 67 [2024-11-16 03:53:39,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:39,857 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 2421 transitions. [2024-11-16 03:53:39,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:53:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2421 transitions. [2024-11-16 03:53:39,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-16 03:53:39,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:39,862 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, 2, 2, 2, 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] [2024-11-16 03:53:39,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:53:39,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:39,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:39,863 INFO L85 PathProgramCache]: Analyzing trace with hash -573895366, now seen corresponding path program 1 times [2024-11-16 03:53:39,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:39,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614928439] [2024-11-16 03:53:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:39,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:53:40,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:40,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614928439] [2024-11-16 03:53:40,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614928439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:40,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:40,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:53:40,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672174810] [2024-11-16 03:53:40,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:40,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:40,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:53:40,110 INFO L87 Difference]: Start difference. First operand 1509 states and 2421 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 03:53:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:43,302 INFO L93 Difference]: Finished difference Result 4523 states and 7259 transitions. [2024-11-16 03:53:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:43,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2024-11-16 03:53:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:43,316 INFO L225 Difference]: With dead ends: 4523 [2024-11-16 03:53:43,316 INFO L226 Difference]: Without dead ends: 3016 [2024-11-16 03:53:43,319 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 03:53:43,320 INFO L432 NwaCegarLoop]: 579 mSDtfsCounter, 917 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:43,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 588 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-16 03:53:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2024-11-16 03:53:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3013. [2024-11-16 03:53:43,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 1.4588313413014609) internal successors, (4394), 3012 states have internal predecessors, (4394), 0 states have call successors, (0), 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 03:53:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 4394 transitions. [2024-11-16 03:53:43,395 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 4394 transitions. Word has length 143 [2024-11-16 03:53:43,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:43,396 INFO L471 AbstractCegarLoop]: Abstraction has 3013 states and 4394 transitions. [2024-11-16 03:53:43,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 03:53:43,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 4394 transitions. [2024-11-16 03:53:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-16 03:53:43,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:43,401 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, 2, 2, 2, 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 03:53:43,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:53:43,401 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:43,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash -317532954, now seen corresponding path program 1 times [2024-11-16 03:53:43,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:43,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856573369] [2024-11-16 03:53:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:43,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:53:43,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:43,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856573369] [2024-11-16 03:53:43,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856573369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:43,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:43,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:53:43,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846126399] [2024-11-16 03:53:43,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:43,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:43,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:43,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:43,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:53:43,679 INFO L87 Difference]: Start difference. First operand 3013 states and 4394 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 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 03:53:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:46,323 INFO L93 Difference]: Finished difference Result 9032 states and 13176 transitions. [2024-11-16 03:53:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:46,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 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 172 [2024-11-16 03:53:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:46,345 INFO L225 Difference]: With dead ends: 9032 [2024-11-16 03:53:46,345 INFO L226 Difference]: Without dead ends: 6021 [2024-11-16 03:53:46,351 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 03:53:46,352 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 746 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:46,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 450 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 03:53:46,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6021 states. [2024-11-16 03:53:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6021 to 6021. [2024-11-16 03:53:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6021 states, 6020 states have (on average 1.2946843853820598) internal successors, (7794), 6020 states have internal predecessors, (7794), 0 states have call successors, (0), 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 03:53:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6021 states to 6021 states and 7794 transitions. [2024-11-16 03:53:46,457 INFO L78 Accepts]: Start accepts. Automaton has 6021 states and 7794 transitions. Word has length 172 [2024-11-16 03:53:46,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:46,458 INFO L471 AbstractCegarLoop]: Abstraction has 6021 states and 7794 transitions. [2024-11-16 03:53:46,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 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 03:53:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6021 states and 7794 transitions. [2024-11-16 03:53:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-16 03:53:46,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:46,461 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, 2, 2, 2, 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] [2024-11-16 03:53:46,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:53:46,462 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:46,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1524805887, now seen corresponding path program 1 times [2024-11-16 03:53:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082560541] [2024-11-16 03:53:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-16 03:53:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082560541] [2024-11-16 03:53:46,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082560541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:53:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065373857] [2024-11-16 03:53:46,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:46,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:53:46,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:53:46,824 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 03:53:46,825 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 03:53:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:46,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:53:46,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:53:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-16 03:53:47,210 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:53:47,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065373857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:47,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:53:47,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-16 03:53:47,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781223826] [2024-11-16 03:53:47,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:47,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:47,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:47,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:53:47,213 INFO L87 Difference]: Start difference. First operand 6021 states and 7794 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 03:53:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:49,525 INFO L93 Difference]: Finished difference Result 15048 states and 18986 transitions. [2024-11-16 03:53:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:49,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 209 [2024-11-16 03:53:49,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:49,560 INFO L225 Difference]: With dead ends: 15048 [2024-11-16 03:53:49,562 INFO L226 Difference]: Without dead ends: 9029 [2024-11-16 03:53:49,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:53:49,573 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 689 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:49,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 234 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 03:53:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2024-11-16 03:53:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 8277. [2024-11-16 03:53:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 1.2278878685355243) internal successors, (10162), 8276 states have internal predecessors, (10162), 0 states have call successors, (0), 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 03:53:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 10162 transitions. [2024-11-16 03:53:49,721 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 10162 transitions. Word has length 209 [2024-11-16 03:53:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:49,723 INFO L471 AbstractCegarLoop]: Abstraction has 8277 states and 10162 transitions. [2024-11-16 03:53:49,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 03:53:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 10162 transitions. [2024-11-16 03:53:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-16 03:53:49,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:49,727 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:49,746 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 03:53:49,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:53:49,932 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:49,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1091380620, now seen corresponding path program 1 times [2024-11-16 03:53:49,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:49,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335241155] [2024-11-16 03:53:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:49,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 03:53:50,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:50,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335241155] [2024-11-16 03:53:50,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335241155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:50,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:50,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:50,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210887304] [2024-11-16 03:53:50,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:50,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:53:50,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:53:50,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:53:50,457 INFO L87 Difference]: Start difference. First operand 8277 states and 10162 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 03:53:53,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:53,367 INFO L93 Difference]: Finished difference Result 16631 states and 20400 transitions. [2024-11-16 03:53:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:53:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 281 [2024-11-16 03:53:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:53,394 INFO L225 Difference]: With dead ends: 16631 [2024-11-16 03:53:53,395 INFO L226 Difference]: Without dead ends: 8280 [2024-11-16 03:53:53,404 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 03:53:53,405 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 853 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:53,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 373 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 03:53:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2024-11-16 03:53:53,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8277. [2024-11-16 03:53:53,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 1.1974383760270662) internal successors, (9910), 8276 states have internal predecessors, (9910), 0 states have call successors, (0), 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 03:53:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 9910 transitions. [2024-11-16 03:53:53,530 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 9910 transitions. Word has length 281 [2024-11-16 03:53:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:53,530 INFO L471 AbstractCegarLoop]: Abstraction has 8277 states and 9910 transitions. [2024-11-16 03:53:53,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 03:53:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 9910 transitions. [2024-11-16 03:53:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-16 03:53:53,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:53,534 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:53,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:53:53,535 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:53,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1552272038, now seen corresponding path program 1 times [2024-11-16 03:53:53,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:53,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090601460] [2024-11-16 03:53:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 03:53:54,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:54,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090601460] [2024-11-16 03:53:54,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090601460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:54,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:54,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 03:53:54,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401017693] [2024-11-16 03:53:54,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:54,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 03:53:54,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:54,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 03:53:54,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:53:54,373 INFO L87 Difference]: Start difference. First operand 8277 states and 9910 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:53:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:58,637 INFO L93 Difference]: Finished difference Result 21816 states and 25483 transitions. [2024-11-16 03:53:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 03:53:58,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2024-11-16 03:53:58,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:58,659 INFO L225 Difference]: With dead ends: 21816 [2024-11-16 03:53:58,660 INFO L226 Difference]: Without dead ends: 13541 [2024-11-16 03:53:58,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:53:58,669 INFO L432 NwaCegarLoop]: 608 mSDtfsCounter, 3433 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5170 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 5316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 5170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:58,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3433 Valid, 640 Invalid, 5316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 5170 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-16 03:53:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13541 states. [2024-11-16 03:53:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13541 to 12037. [2024-11-16 03:53:58,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 1.1514622798271852) internal successors, (13859), 12036 states have internal predecessors, (13859), 0 states have call successors, (0), 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 03:53:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 13859 transitions. [2024-11-16 03:53:58,820 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 13859 transitions. Word has length 282 [2024-11-16 03:53:58,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:58,820 INFO L471 AbstractCegarLoop]: Abstraction has 12037 states and 13859 transitions. [2024-11-16 03:53:58,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:53:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 13859 transitions. [2024-11-16 03:53:58,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-16 03:53:58,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:58,827 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, 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, 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] [2024-11-16 03:53:58,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:53:58,827 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:58,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:58,828 INFO L85 PathProgramCache]: Analyzing trace with hash 821200583, now seen corresponding path program 1 times [2024-11-16 03:53:58,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:58,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559592496] [2024-11-16 03:53:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 03:53:59,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:59,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559592496] [2024-11-16 03:53:59,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559592496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:59,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:59,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:59,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822371352] [2024-11-16 03:53:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:59,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:59,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:59,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:59,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:53:59,059 INFO L87 Difference]: Start difference. First operand 12037 states and 13859 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 03:54:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:02,053 INFO L93 Difference]: Finished difference Result 36104 states and 41571 transitions. [2024-11-16 03:54:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:02,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 365 [2024-11-16 03:54:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:02,093 INFO L225 Difference]: With dead ends: 36104 [2024-11-16 03:54:02,093 INFO L226 Difference]: Without dead ends: 24069 [2024-11-16 03:54:02,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:02,110 INFO L432 NwaCegarLoop]: 1381 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:02,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1389 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-16 03:54:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24069 states. [2024-11-16 03:54:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24069 to 22565. [2024-11-16 03:54:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22565 states, 22564 states have (on average 1.1370767594398157) internal successors, (25657), 22564 states have internal predecessors, (25657), 0 states have call successors, (0), 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 03:54:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22565 states to 22565 states and 25657 transitions. [2024-11-16 03:54:02,398 INFO L78 Accepts]: Start accepts. Automaton has 22565 states and 25657 transitions. Word has length 365 [2024-11-16 03:54:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:02,398 INFO L471 AbstractCegarLoop]: Abstraction has 22565 states and 25657 transitions. [2024-11-16 03:54:02,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 03:54:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 22565 states and 25657 transitions. [2024-11-16 03:54:02,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-16 03:54:02,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:02,406 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, 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, 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] [2024-11-16 03:54:02,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 03:54:02,407 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:02,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1961106961, now seen corresponding path program 1 times [2024-11-16 03:54:02,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:02,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168151199] [2024-11-16 03:54:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:02,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-16 03:54:02,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:02,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168151199] [2024-11-16 03:54:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168151199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:02,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:02,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:02,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016425007] [2024-11-16 03:54:02,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:02,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:02,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:02,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:02,737 INFO L87 Difference]: Start difference. First operand 22565 states and 25657 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 03:54:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:05,799 INFO L93 Difference]: Finished difference Result 54152 states and 62422 transitions. [2024-11-16 03:54:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:05,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 369 [2024-11-16 03:54:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:05,860 INFO L225 Difference]: With dead ends: 54152 [2024-11-16 03:54:05,861 INFO L226 Difference]: Without dead ends: 31589 [2024-11-16 03:54:05,887 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 03:54:05,889 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:05,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 509 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-16 03:54:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31589 states. [2024-11-16 03:54:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31589 to 31589. [2024-11-16 03:54:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31589 states, 31588 states have (on average 1.1368241104216792) internal successors, (35910), 31588 states have internal predecessors, (35910), 0 states have call successors, (0), 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 03:54:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31589 states to 31589 states and 35910 transitions. [2024-11-16 03:54:06,226 INFO L78 Accepts]: Start accepts. Automaton has 31589 states and 35910 transitions. Word has length 369 [2024-11-16 03:54:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:06,226 INFO L471 AbstractCegarLoop]: Abstraction has 31589 states and 35910 transitions. [2024-11-16 03:54:06,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 03:54:06,227 INFO L276 IsEmpty]: Start isEmpty. Operand 31589 states and 35910 transitions. [2024-11-16 03:54:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-16 03:54:06,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:06,235 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:54:06,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 03:54:06,235 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:06,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash 618793111, now seen corresponding path program 1 times [2024-11-16 03:54:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:06,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245377162] [2024-11-16 03:54:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:06,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 191 proven. 110 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-16 03:54:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245377162] [2024-11-16 03:54:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245377162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:54:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262501655] [2024-11-16 03:54:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:07,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:54:07,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:54:07,082 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 03:54:07,083 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 03:54:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:07,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:54:07,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:54:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-16 03:54:07,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:54:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262501655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:07,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:54:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:54:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699207136] [2024-11-16 03:54:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:07,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:54:07,365 INFO L87 Difference]: Start difference. First operand 31589 states and 35910 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 03:54:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:09,824 INFO L93 Difference]: Finished difference Result 75208 states and 86726 transitions. [2024-11-16 03:54:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:09,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 397 [2024-11-16 03:54:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:10,011 INFO L225 Difference]: With dead ends: 75208 [2024-11-16 03:54:10,011 INFO L226 Difference]: Without dead ends: 43621 [2024-11-16 03:54:10,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:54:10,026 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 790 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:10,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 238 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 03:54:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43621 states. [2024-11-16 03:54:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43621 to 43621. [2024-11-16 03:54:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43621 states, 43620 states have (on average 1.1323933975240714) internal successors, (49395), 43620 states have internal predecessors, (49395), 0 states have call successors, (0), 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 03:54:10,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43621 states to 43621 states and 49395 transitions. [2024-11-16 03:54:10,468 INFO L78 Accepts]: Start accepts. Automaton has 43621 states and 49395 transitions. Word has length 397 [2024-11-16 03:54:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:10,469 INFO L471 AbstractCegarLoop]: Abstraction has 43621 states and 49395 transitions. [2024-11-16 03:54:10,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 03:54:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand 43621 states and 49395 transitions. [2024-11-16 03:54:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-16 03:54:10,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:10,476 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:54:10,494 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 03:54:10,677 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,SelfDestructingSolverStorable8 [2024-11-16 03:54:10,677 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:10,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1035336801, now seen corresponding path program 1 times [2024-11-16 03:54:10,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:10,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353587459] [2024-11-16 03:54:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-16 03:54:10,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:10,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353587459] [2024-11-16 03:54:10,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353587459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:10,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:10,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:10,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885019036] [2024-11-16 03:54:10,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:10,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:10,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:10,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:10,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:10,969 INFO L87 Difference]: Start difference. First operand 43621 states and 49395 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 03:54:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:13,829 INFO L93 Difference]: Finished difference Result 104536 states and 119211 transitions. [2024-11-16 03:54:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:13,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 401 [2024-11-16 03:54:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:13,895 INFO L225 Difference]: With dead ends: 104536 [2024-11-16 03:54:13,895 INFO L226 Difference]: Without dead ends: 60917 [2024-11-16 03:54:13,923 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 03:54:13,924 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 714 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:13,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 362 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 03:54:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60917 states. [2024-11-16 03:54:14,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60917 to 57909. [2024-11-16 03:54:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57909 states, 57908 states have (on average 1.1348518339434965) internal successors, (65717), 57908 states have internal predecessors, (65717), 0 states have call successors, (0), 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 03:54:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57909 states to 57909 states and 65717 transitions. [2024-11-16 03:54:14,488 INFO L78 Accepts]: Start accepts. Automaton has 57909 states and 65717 transitions. Word has length 401 [2024-11-16 03:54:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:14,489 INFO L471 AbstractCegarLoop]: Abstraction has 57909 states and 65717 transitions. [2024-11-16 03:54:14,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 03:54:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 57909 states and 65717 transitions. [2024-11-16 03:54:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-11-16 03:54:14,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:14,497 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:14,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 03:54:14,497 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:14,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:14,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1944270819, now seen corresponding path program 1 times [2024-11-16 03:54:14,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:14,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216990252] [2024-11-16 03:54:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:14,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-16 03:54:15,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:15,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216990252] [2024-11-16 03:54:15,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216990252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:15,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:15,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:15,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038009675] [2024-11-16 03:54:15,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:15,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:15,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:15,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:15,065 INFO L87 Difference]: Start difference. First operand 57909 states and 65717 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 03:54:18,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:18,081 INFO L93 Difference]: Finished difference Result 156424 states and 179012 transitions. [2024-11-16 03:54:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:18,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 425 [2024-11-16 03:54:18,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:18,194 INFO L225 Difference]: With dead ends: 156424 [2024-11-16 03:54:18,194 INFO L226 Difference]: Without dead ends: 98517 [2024-11-16 03:54:18,225 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 03:54:18,226 INFO L432 NwaCegarLoop]: 1266 mSDtfsCounter, 711 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:18,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1276 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 03:54:18,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98517 states. [2024-11-16 03:54:19,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98517 to 90997. [2024-11-16 03:54:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90997 states, 90996 states have (on average 1.1122796606444239) internal successors, (101213), 90996 states have internal predecessors, (101213), 0 states have call successors, (0), 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 03:54:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90997 states to 90997 states and 101213 transitions. [2024-11-16 03:54:19,611 INFO L78 Accepts]: Start accepts. Automaton has 90997 states and 101213 transitions. Word has length 425 [2024-11-16 03:54:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:19,612 INFO L471 AbstractCegarLoop]: Abstraction has 90997 states and 101213 transitions. [2024-11-16 03:54:19,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 03:54:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 90997 states and 101213 transitions. [2024-11-16 03:54:19,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-16 03:54:19,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:19,626 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:19,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 03:54:19,626 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:19,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1131444643, now seen corresponding path program 1 times [2024-11-16 03:54:19,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:19,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784012432] [2024-11-16 03:54:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:19,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 506 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-16 03:54:20,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:20,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784012432] [2024-11-16 03:54:20,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784012432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:20,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:20,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:20,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292594331] [2024-11-16 03:54:20,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:20,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:20,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:20,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:20,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:20,132 INFO L87 Difference]: Start difference. First operand 90997 states and 101213 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 03:54:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:23,193 INFO L93 Difference]: Finished difference Result 225608 states and 252833 transitions. [2024-11-16 03:54:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:23,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 492 [2024-11-16 03:54:23,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:23,515 INFO L225 Difference]: With dead ends: 225608 [2024-11-16 03:54:23,515 INFO L226 Difference]: Without dead ends: 130853 [2024-11-16 03:54:23,579 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 03:54:23,580 INFO L432 NwaCegarLoop]: 1273 mSDtfsCounter, 714 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:23,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1281 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 03:54:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130853 states. [2024-11-16 03:54:24,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130853 to 126341. [2024-11-16 03:54:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126341 states, 126340 states have (on average 1.0942377710938738) internal successors, (138246), 126340 states have internal predecessors, (138246), 0 states have call successors, (0), 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 03:54:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126341 states to 126341 states and 138246 transitions. [2024-11-16 03:54:25,145 INFO L78 Accepts]: Start accepts. Automaton has 126341 states and 138246 transitions. Word has length 492 [2024-11-16 03:54:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:25,146 INFO L471 AbstractCegarLoop]: Abstraction has 126341 states and 138246 transitions. [2024-11-16 03:54:25,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 03:54:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 126341 states and 138246 transitions. [2024-11-16 03:54:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-16 03:54:25,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:25,164 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:54:25,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 03:54:25,165 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:25,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2095976703, now seen corresponding path program 1 times [2024-11-16 03:54:25,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:25,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947179328] [2024-11-16 03:54:25,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:25,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-16 03:54:25,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:25,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947179328] [2024-11-16 03:54:25,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947179328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:25,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:25,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:25,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319271952] [2024-11-16 03:54:25,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:25,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:25,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:25,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:25,881 INFO L87 Difference]: Start difference. First operand 126341 states and 138246 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 03:54:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:28,918 INFO L93 Difference]: Finished difference Result 256440 states and 280143 transitions. [2024-11-16 03:54:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:28,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 504 [2024-11-16 03:54:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:29,294 INFO L225 Difference]: With dead ends: 256440 [2024-11-16 03:54:29,295 INFO L226 Difference]: Without dead ends: 129349 [2024-11-16 03:54:29,377 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 03:54:29,378 INFO L432 NwaCegarLoop]: 1170 mSDtfsCounter, 694 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:29,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1180 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 03:54:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129349 states. [2024-11-16 03:54:30,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129349 to 125589. [2024-11-16 03:54:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125589 states, 125588 states have (on average 1.0823247444023314) internal successors, (135927), 125588 states have internal predecessors, (135927), 0 states have call successors, (0), 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 03:54:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125589 states to 125589 states and 135927 transitions. [2024-11-16 03:54:31,315 INFO L78 Accepts]: Start accepts. Automaton has 125589 states and 135927 transitions. Word has length 504 [2024-11-16 03:54:31,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:31,315 INFO L471 AbstractCegarLoop]: Abstraction has 125589 states and 135927 transitions. [2024-11-16 03:54:31,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 03:54:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 125589 states and 135927 transitions. [2024-11-16 03:54:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2024-11-16 03:54:31,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:31,327 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:31,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 03:54:31,328 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:31,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash 483160249, now seen corresponding path program 1 times [2024-11-16 03:54:31,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:31,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614754859] [2024-11-16 03:54:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-16 03:54:31,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:31,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614754859] [2024-11-16 03:54:31,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614754859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:31,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:31,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756395278] [2024-11-16 03:54:31,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:31,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:31,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:31,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:31,635 INFO L87 Difference]: Start difference. First operand 125589 states and 135927 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 03:54:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:34,822 INFO L93 Difference]: Finished difference Result 287272 states and 312008 transitions. [2024-11-16 03:54:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:34,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 508 [2024-11-16 03:54:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:35,005 INFO L225 Difference]: With dead ends: 287272 [2024-11-16 03:54:35,005 INFO L226 Difference]: Without dead ends: 161685 [2024-11-16 03:54:35,073 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 03:54:35,074 INFO L432 NwaCegarLoop]: 1273 mSDtfsCounter, 664 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:35,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1283 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 03:54:35,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161685 states. [2024-11-16 03:54:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161685 to 157173. [2024-11-16 03:54:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157173 states, 157172 states have (on average 1.0749242867686357) internal successors, (168948), 157172 states have internal predecessors, (168948), 0 states have call successors, (0), 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 03:54:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157173 states to 157173 states and 168948 transitions. [2024-11-16 03:54:37,215 INFO L78 Accepts]: Start accepts. Automaton has 157173 states and 168948 transitions. Word has length 508 [2024-11-16 03:54:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:37,216 INFO L471 AbstractCegarLoop]: Abstraction has 157173 states and 168948 transitions. [2024-11-16 03:54:37,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 03:54:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 157173 states and 168948 transitions. [2024-11-16 03:54:37,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2024-11-16 03:54:37,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:37,230 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, 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, 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, 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, 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 03:54:37,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 03:54:37,230 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:37,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:37,230 INFO L85 PathProgramCache]: Analyzing trace with hash 552022604, now seen corresponding path program 1 times [2024-11-16 03:54:37,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:37,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885848669] [2024-11-16 03:54:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:37,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-16 03:54:38,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:38,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885848669] [2024-11-16 03:54:38,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885848669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:38,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:38,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:38,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996901097] [2024-11-16 03:54:38,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:38,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:38,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:38,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:38,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:38,166 INFO L87 Difference]: Start difference. First operand 157173 states and 168948 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 03:54:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:41,391 INFO L93 Difference]: Finished difference Result 339912 states and 365578 transitions. [2024-11-16 03:54:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:41,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 562 [2024-11-16 03:54:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:41,610 INFO L225 Difference]: With dead ends: 339912 [2024-11-16 03:54:41,610 INFO L226 Difference]: Without dead ends: 182741 [2024-11-16 03:54:41,670 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 03:54:41,670 INFO L432 NwaCegarLoop]: 1115 mSDtfsCounter, 808 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:41,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1125 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 03:54:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182741 states.