./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label34.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/Problem17_label34.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 c371ce1f15a8888766c33a9703b06847f70d6274570c9b062f0d05b5c6caa625 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:18:51,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:18:51,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:18:51,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:18:51,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:18:51,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:18:51,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:18:51,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:18:51,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:18:51,675 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:18:51,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:18:51,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:18:51,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:18:51,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:18:51,678 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:18:51,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:18:51,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:18:51,679 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:18:51,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:18:51,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:18:51,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:18:51,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:18:51,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:18:51,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:18:51,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:18:51,680 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:18:51,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:18:51,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:18:51,681 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:18:51,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:18:51,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:18:51,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:18:51,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:18:51,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:18:51,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:18:51,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:18:51,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:18:51,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:18:51,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:18:51,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:18:51,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:18:51,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:18:51,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c371ce1f15a8888766c33a9703b06847f70d6274570c9b062f0d05b5c6caa625 [2024-11-16 04:18:51,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:18:51,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:18:51,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:18:51,939 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:18:51,940 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:18:51,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label34.c [2024-11-16 04:18:53,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:18:53,565 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:18:53,567 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label34.c [2024-11-16 04:18:53,596 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e034a006/3c731eca4b414bdb80d51a595eb88fdb/FLAG227cb94a1 [2024-11-16 04:18:53,613 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e034a006/3c731eca4b414bdb80d51a595eb88fdb [2024-11-16 04:18:53,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:18:53,618 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:18:53,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:18:53,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:18:53,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:18:53,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:53" (1/1) ... [2024-11-16 04:18:53,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7a5333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:53, skipping insertion in model container [2024-11-16 04:18:53,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:53" (1/1) ... [2024-11-16 04:18:53,703 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:18:53,917 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/Problem17_label34.c[2983,2996] [2024-11-16 04:18:54,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:18:54,350 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:18:54,365 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/Problem17_label34.c[2983,2996] [2024-11-16 04:18:54,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:18:54,635 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:18:54,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54 WrapperNode [2024-11-16 04:18:54,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:18:54,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:18:54,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:18:54,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:18:54,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:54,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:54,845 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-16 04:18:54,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:18:54,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:18:54,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:18:54,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:18:54,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:54,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:54,881 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:55,026 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:18:55,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:55,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:55,127 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:55,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:55,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:55,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:55,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:18:55,198 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:18:55,199 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:18:55,199 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:18:55,199 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (1/1) ... [2024-11-16 04:18:55,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:18:55,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:18:55,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:18:55,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:18:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:18:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:18:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:18:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:18:55,338 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:18:55,340 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:18:57,780 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-16 04:18:57,915 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-16 04:18:57,917 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:18:57,947 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:18:57,947 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:18:57,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:18:57 BoogieIcfgContainer [2024-11-16 04:18:57,948 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:18:57,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:18:57,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:18:57,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:18:57,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:18:53" (1/3) ... [2024-11-16 04:18:57,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ea207f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:57, skipping insertion in model container [2024-11-16 04:18:57,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:54" (2/3) ... [2024-11-16 04:18:57,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ea207f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:57, skipping insertion in model container [2024-11-16 04:18:57,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:18:57" (3/3) ... [2024-11-16 04:18:57,956 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label34.c [2024-11-16 04:18:57,971 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:18:57,971 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:18:58,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:18:58,049 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;@314dd924, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:18:58,050 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:18:58,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:58,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 04:18:58,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:58,061 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] [2024-11-16 04:18:58,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:58,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:58,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1586952605, now seen corresponding path program 1 times [2024-11-16 04:18:58,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755443833] [2024-11-16 04:18:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:58,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:18:58,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:58,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755443833] [2024-11-16 04:18:58,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755443833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:58,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:58,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:18:58,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575861576] [2024-11-16 04:18:58,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:58,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:58,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:58,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:58,334 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 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 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:00,533 INFO L93 Difference]: Finished difference Result 1648 states and 3030 transitions. [2024-11-16 04:19:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-16 04:19:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:00,549 INFO L225 Difference]: With dead ends: 1648 [2024-11-16 04:19:00,549 INFO L226 Difference]: Without dead ends: 978 [2024-11-16 04:19:00,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:00,559 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 471 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:00,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 555 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 04:19:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-16 04:19:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-16 04:19:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.5061601642710472) internal successors, (1467), 974 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:00,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1467 transitions. [2024-11-16 04:19:00,648 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1467 transitions. Word has length 21 [2024-11-16 04:19:00,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:00,648 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1467 transitions. [2024-11-16 04:19:00,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1467 transitions. [2024-11-16 04:19:00,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 04:19:00,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:00,651 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 04:19:00,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:19:00,651 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:00,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1503359327, now seen corresponding path program 1 times [2024-11-16 04:19:00,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:00,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498595884] [2024-11-16 04:19:00,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:00,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:01,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:01,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498595884] [2024-11-16 04:19:01,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498595884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:01,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:01,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:01,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900007864] [2024-11-16 04:19:01,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:01,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:01,023 INFO L87 Difference]: Start difference. First operand 975 states and 1467 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:04,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:04,005 INFO L93 Difference]: Finished difference Result 3745 states and 5664 transitions. [2024-11-16 04:19:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:04,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-11-16 04:19:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:04,015 INFO L225 Difference]: With dead ends: 3745 [2024-11-16 04:19:04,015 INFO L226 Difference]: Without dead ends: 2772 [2024-11-16 04:19:04,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:04,021 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 941 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:04,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 277 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-16 04:19:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2024-11-16 04:19:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2731. [2024-11-16 04:19:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2731 states, 2730 states have (on average 1.3934065934065933) internal successors, (3804), 2730 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 3804 transitions. [2024-11-16 04:19:04,073 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 3804 transitions. Word has length 92 [2024-11-16 04:19:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:04,074 INFO L471 AbstractCegarLoop]: Abstraction has 2731 states and 3804 transitions. [2024-11-16 04:19:04,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 3804 transitions. [2024-11-16 04:19:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-16 04:19:04,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:04,082 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:04,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:19:04,082 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:04,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash -293003433, now seen corresponding path program 1 times [2024-11-16 04:19:04,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:04,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091744035] [2024-11-16 04:19:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:04,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:04,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:04,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091744035] [2024-11-16 04:19:04,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091744035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:04,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:04,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:19:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485220398] [2024-11-16 04:19:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:04,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:04,350 INFO L87 Difference]: Start difference. First operand 2731 states and 3804 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:06,108 INFO L93 Difference]: Finished difference Result 6748 states and 9424 transitions. [2024-11-16 04:19:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:06,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-11-16 04:19:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:06,120 INFO L225 Difference]: With dead ends: 6748 [2024-11-16 04:19:06,121 INFO L226 Difference]: Without dead ends: 4019 [2024-11-16 04:19:06,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:06,126 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 331 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:06,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 568 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:19:06,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2024-11-16 04:19:06,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 4015. [2024-11-16 04:19:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4015 states, 4014 states have (on average 1.2979571499750873) internal successors, (5210), 4014 states have internal predecessors, (5210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 5210 transitions. [2024-11-16 04:19:06,205 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 5210 transitions. Word has length 127 [2024-11-16 04:19:06,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:06,206 INFO L471 AbstractCegarLoop]: Abstraction has 4015 states and 5210 transitions. [2024-11-16 04:19:06,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 5210 transitions. [2024-11-16 04:19:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-16 04:19:06,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:06,210 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:06,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:19:06,211 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:06,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash 605119622, now seen corresponding path program 1 times [2024-11-16 04:19:06,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:06,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145052016] [2024-11-16 04:19:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:06,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:06,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145052016] [2024-11-16 04:19:06,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145052016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:06,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:06,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:06,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102755844] [2024-11-16 04:19:06,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:06,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:06,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:06,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:06,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:06,553 INFO L87 Difference]: Start difference. First operand 4015 states and 5210 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:08,490 INFO L93 Difference]: Finished difference Result 8454 states and 10856 transitions. [2024-11-16 04:19:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:08,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2024-11-16 04:19:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:08,502 INFO L225 Difference]: With dead ends: 8454 [2024-11-16 04:19:08,503 INFO L226 Difference]: Without dead ends: 4441 [2024-11-16 04:19:08,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:19:08,508 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 530 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:08,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 861 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 04:19:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4441 states. [2024-11-16 04:19:08,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4441 to 4441. [2024-11-16 04:19:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4441 states, 4440 states have (on average 1.2707207207207207) internal successors, (5642), 4440 states have internal predecessors, (5642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 5642 transitions. [2024-11-16 04:19:08,576 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 5642 transitions. Word has length 133 [2024-11-16 04:19:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:08,576 INFO L471 AbstractCegarLoop]: Abstraction has 4441 states and 5642 transitions. [2024-11-16 04:19:08,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 5642 transitions. [2024-11-16 04:19:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-16 04:19:08,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:08,578 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:08,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:19:08,579 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:08,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1153738755, now seen corresponding path program 1 times [2024-11-16 04:19:08,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:08,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298241422] [2024-11-16 04:19:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:08,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-16 04:19:08,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:08,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298241422] [2024-11-16 04:19:08,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298241422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:08,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:08,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:19:08,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664448867] [2024-11-16 04:19:08,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:08,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:08,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:08,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:08,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:08,721 INFO L87 Difference]: Start difference. First operand 4441 states and 5642 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:10,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:10,210 INFO L93 Difference]: Finished difference Result 11449 states and 14890 transitions. [2024-11-16 04:19:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:10,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 164 [2024-11-16 04:19:10,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:10,231 INFO L225 Difference]: With dead ends: 11449 [2024-11-16 04:19:10,231 INFO L226 Difference]: Without dead ends: 6148 [2024-11-16 04:19:10,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:10,237 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 387 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:10,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 592 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:19:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2024-11-16 04:19:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 5293. [2024-11-16 04:19:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 1.187830687830688) internal successors, (6286), 5292 states have internal predecessors, (6286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 6286 transitions. [2024-11-16 04:19:10,304 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 6286 transitions. Word has length 164 [2024-11-16 04:19:10,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:10,305 INFO L471 AbstractCegarLoop]: Abstraction has 5293 states and 6286 transitions. [2024-11-16 04:19:10,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 6286 transitions. [2024-11-16 04:19:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-16 04:19:10,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:10,307 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:10,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:19:10,307 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:10,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2108210727, now seen corresponding path program 1 times [2024-11-16 04:19:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:10,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026521976] [2024-11-16 04:19:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:10,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 04:19:10,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:10,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026521976] [2024-11-16 04:19:10,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026521976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:10,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:10,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:10,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577517521] [2024-11-16 04:19:10,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:10,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:10,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:10,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:10,401 INFO L87 Difference]: Start difference. First operand 5293 states and 6286 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:11,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:11,865 INFO L93 Difference]: Finished difference Result 13140 states and 15858 transitions. [2024-11-16 04:19:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:11,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2024-11-16 04:19:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:11,890 INFO L225 Difference]: With dead ends: 13140 [2024-11-16 04:19:11,890 INFO L226 Difference]: Without dead ends: 7849 [2024-11-16 04:19:11,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:11,896 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 441 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:11,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 481 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:19:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7849 states. [2024-11-16 04:19:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7849 to 5270. [2024-11-16 04:19:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5269 states have (on average 1.1863731258303283) internal successors, (6251), 5269 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 6251 transitions. [2024-11-16 04:19:11,968 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 6251 transitions. Word has length 177 [2024-11-16 04:19:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:11,969 INFO L471 AbstractCegarLoop]: Abstraction has 5270 states and 6251 transitions. [2024-11-16 04:19:11,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:11,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 6251 transitions. [2024-11-16 04:19:11,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-16 04:19:11,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:11,970 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:11,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:19:11,970 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:11,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:11,971 INFO L85 PathProgramCache]: Analyzing trace with hash 382833203, now seen corresponding path program 1 times [2024-11-16 04:19:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:11,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870522099] [2024-11-16 04:19:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:11,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:12,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870522099] [2024-11-16 04:19:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870522099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:12,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 04:19:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936472203] [2024-11-16 04:19:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:12,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 04:19:12,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 04:19:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:19:12,265 INFO L87 Difference]: Start difference. First operand 5270 states and 6251 transitions. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:14,080 INFO L93 Difference]: Finished difference Result 13541 states and 16363 transitions. [2024-11-16 04:19:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2024-11-16 04:19:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:14,095 INFO L225 Difference]: With dead ends: 13541 [2024-11-16 04:19:14,095 INFO L226 Difference]: Without dead ends: 8273 [2024-11-16 04:19:14,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:19:14,099 INFO L432 NwaCegarLoop]: 741 mSDtfsCounter, 593 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:14,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 891 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:19:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8273 states. [2024-11-16 04:19:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8273 to 8259. [2024-11-16 04:19:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8259 states, 8258 states have (on average 1.1709857108258659) internal successors, (9670), 8258 states have internal predecessors, (9670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 9670 transitions. [2024-11-16 04:19:14,185 INFO L78 Accepts]: Start accepts. Automaton has 8259 states and 9670 transitions. Word has length 184 [2024-11-16 04:19:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:14,185 INFO L471 AbstractCegarLoop]: Abstraction has 8259 states and 9670 transitions. [2024-11-16 04:19:14,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 8259 states and 9670 transitions. [2024-11-16 04:19:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-16 04:19:14,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:14,188 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:14,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:19:14,188 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:14,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 171740579, now seen corresponding path program 1 times [2024-11-16 04:19:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:14,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031874244] [2024-11-16 04:19:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:14,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 176 proven. 71 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 04:19:14,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:14,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031874244] [2024-11-16 04:19:14,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031874244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:14,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618123471] [2024-11-16 04:19:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:14,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:14,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:19:14,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:19:14,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:19:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:14,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:19:14,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:19:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 176 proven. 71 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 04:19:14,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:19:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 04:19:14,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618123471] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:14,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:19:14,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:19:14,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854222628] [2024-11-16 04:19:14,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:14,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:14,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:14,980 INFO L87 Difference]: Start difference. First operand 8259 states and 9670 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:17,618 INFO L93 Difference]: Finished difference Result 25076 states and 29891 transitions. [2024-11-16 04:19:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:17,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 248 [2024-11-16 04:19:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:17,642 INFO L225 Difference]: With dead ends: 25076 [2024-11-16 04:19:17,642 INFO L226 Difference]: Without dead ends: 16386 [2024-11-16 04:19:17,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:17,654 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 1073 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 1228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1228 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:17,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 151 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1228 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 04:19:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16386 states. [2024-11-16 04:19:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16386 to 16384. [2024-11-16 04:19:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16384 states, 16383 states have (on average 1.174754318500885) internal successors, (19246), 16383 states have internal predecessors, (19246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16384 states to 16384 states and 19246 transitions. [2024-11-16 04:19:17,829 INFO L78 Accepts]: Start accepts. Automaton has 16384 states and 19246 transitions. Word has length 248 [2024-11-16 04:19:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:17,830 INFO L471 AbstractCegarLoop]: Abstraction has 16384 states and 19246 transitions. [2024-11-16 04:19:17,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 16384 states and 19246 transitions. [2024-11-16 04:19:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-16 04:19:17,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:17,833 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:17,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:19:18,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:18,034 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:18,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:18,034 INFO L85 PathProgramCache]: Analyzing trace with hash 161971263, now seen corresponding path program 1 times [2024-11-16 04:19:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718591640] [2024-11-16 04:19:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:19:18,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:18,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718591640] [2024-11-16 04:19:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718591640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:18,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897254391] [2024-11-16 04:19:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:18,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:18,215 INFO L87 Difference]: Start difference. First operand 16384 states and 19246 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:19,551 INFO L93 Difference]: Finished difference Result 35749 states and 42206 transitions. [2024-11-16 04:19:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:19,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 261 [2024-11-16 04:19:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:19,578 INFO L225 Difference]: With dead ends: 35749 [2024-11-16 04:19:19,578 INFO L226 Difference]: Without dead ends: 18940 [2024-11-16 04:19:19,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:19,594 INFO L432 NwaCegarLoop]: 837 mSDtfsCounter, 372 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:19,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 910 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:19:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18940 states. [2024-11-16 04:19:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18940 to 18940. [2024-11-16 04:19:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18940 states, 18939 states have (on average 1.1529119805691959) internal successors, (21835), 18939 states have internal predecessors, (21835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18940 states to 18940 states and 21835 transitions. [2024-11-16 04:19:19,818 INFO L78 Accepts]: Start accepts. Automaton has 18940 states and 21835 transitions. Word has length 261 [2024-11-16 04:19:19,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:19,819 INFO L471 AbstractCegarLoop]: Abstraction has 18940 states and 21835 transitions. [2024-11-16 04:19:19,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 18940 states and 21835 transitions. [2024-11-16 04:19:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-16 04:19:19,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:19,821 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:19,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:19:19,822 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:19,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:19,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1532656107, now seen corresponding path program 1 times [2024-11-16 04:19:19,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:19,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992179090] [2024-11-16 04:19:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:19,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:19:20,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:20,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992179090] [2024-11-16 04:19:20,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992179090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:20,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:20,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:20,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997987872] [2024-11-16 04:19:20,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:20,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:20,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:20,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:20,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:20,033 INFO L87 Difference]: Start difference. First operand 18940 states and 21835 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:21,344 INFO L93 Difference]: Finished difference Result 40867 states and 47171 transitions. [2024-11-16 04:19:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:21,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 261 [2024-11-16 04:19:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:21,367 INFO L225 Difference]: With dead ends: 40867 [2024-11-16 04:19:21,367 INFO L226 Difference]: Without dead ends: 21503 [2024-11-16 04:19:21,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:21,383 INFO L432 NwaCegarLoop]: 835 mSDtfsCounter, 422 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:21,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 911 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:19:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21503 states. [2024-11-16 04:19:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21503 to 21499. [2024-11-16 04:19:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21499 states, 21498 states have (on average 1.1406642478370081) internal successors, (24522), 21498 states have internal predecessors, (24522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21499 states to 21499 states and 24522 transitions. [2024-11-16 04:19:21,697 INFO L78 Accepts]: Start accepts. Automaton has 21499 states and 24522 transitions. Word has length 261 [2024-11-16 04:19:21,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:21,697 INFO L471 AbstractCegarLoop]: Abstraction has 21499 states and 24522 transitions. [2024-11-16 04:19:21,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:21,698 INFO L276 IsEmpty]: Start isEmpty. Operand 21499 states and 24522 transitions. [2024-11-16 04:19:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-16 04:19:21,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:21,701 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:21,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:19:21,702 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:21,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1651281165, now seen corresponding path program 1 times [2024-11-16 04:19:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052369173] [2024-11-16 04:19:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-16 04:19:21,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:21,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052369173] [2024-11-16 04:19:21,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052369173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:21,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:21,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:21,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809838177] [2024-11-16 04:19:21,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:21,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:21,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:21,840 INFO L87 Difference]: Start difference. First operand 21499 states and 24522 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:23,468 INFO L93 Difference]: Finished difference Result 54930 states and 62489 transitions. [2024-11-16 04:19:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:23,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 296 [2024-11-16 04:19:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:23,505 INFO L225 Difference]: With dead ends: 54930 [2024-11-16 04:19:23,505 INFO L226 Difference]: Without dead ends: 32999 [2024-11-16 04:19:23,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:23,523 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 450 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:23,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 424 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:19:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32999 states. [2024-11-16 04:19:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32999 to 30438. [2024-11-16 04:19:23,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30438 states, 30437 states have (on average 1.121234024378224) internal successors, (34127), 30437 states have internal predecessors, (34127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30438 states to 30438 states and 34127 transitions. [2024-11-16 04:19:23,832 INFO L78 Accepts]: Start accepts. Automaton has 30438 states and 34127 transitions. Word has length 296 [2024-11-16 04:19:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:23,832 INFO L471 AbstractCegarLoop]: Abstraction has 30438 states and 34127 transitions. [2024-11-16 04:19:23,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 30438 states and 34127 transitions. [2024-11-16 04:19:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-16 04:19:23,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:23,836 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-16 04:19:23,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:19:23,837 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:23,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1360012585, now seen corresponding path program 1 times [2024-11-16 04:19:23,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:23,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21068399] [2024-11-16 04:19:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:23,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 04:19:24,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:24,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21068399] [2024-11-16 04:19:24,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21068399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:24,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:24,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:24,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72252135] [2024-11-16 04:19:24,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:24,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:24,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:24,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:24,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:24,065 INFO L87 Difference]: Start difference. First operand 30438 states and 34127 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:25,423 INFO L93 Difference]: Finished difference Result 70683 states and 79597 transitions. [2024-11-16 04:19:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:25,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 314 [2024-11-16 04:19:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:25,468 INFO L225 Difference]: With dead ends: 70683 [2024-11-16 04:19:25,468 INFO L226 Difference]: Without dead ends: 38967 [2024-11-16 04:19:25,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:25,492 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 343 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:25,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 780 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:19:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38967 states. [2024-11-16 04:19:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38967 to 37687. [2024-11-16 04:19:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37687 states, 37686 states have (on average 1.1051584142652444) internal successors, (41649), 37686 states have internal predecessors, (41649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37687 states to 37687 states and 41649 transitions. [2024-11-16 04:19:25,906 INFO L78 Accepts]: Start accepts. Automaton has 37687 states and 41649 transitions. Word has length 314 [2024-11-16 04:19:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:25,907 INFO L471 AbstractCegarLoop]: Abstraction has 37687 states and 41649 transitions. [2024-11-16 04:19:25,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 37687 states and 41649 transitions. [2024-11-16 04:19:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-16 04:19:25,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:25,912 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:25,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:19:25,913 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:25,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:25,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1782025363, now seen corresponding path program 1 times [2024-11-16 04:19:25,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:25,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117751042] [2024-11-16 04:19:25,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:25,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 319 proven. 74 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-16 04:19:26,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117751042] [2024-11-16 04:19:26,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117751042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655240363] [2024-11-16 04:19:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:26,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:19:26,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:19:26,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:19:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:26,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:19:26,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:19:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 319 proven. 74 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-16 04:19:26,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:19:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-16 04:19:26,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655240363] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:26,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:19:26,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:19:26,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437762593] [2024-11-16 04:19:26,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:26,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:26,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:26,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:26,721 INFO L87 Difference]: Start difference. First operand 37687 states and 41649 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:29,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:29,047 INFO L93 Difference]: Finished difference Result 90319 states and 99957 transitions. [2024-11-16 04:19:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:29,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2024-11-16 04:19:29,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:29,106 INFO L225 Difference]: With dead ends: 90319 [2024-11-16 04:19:29,107 INFO L226 Difference]: Without dead ends: 52206 [2024-11-16 04:19:29,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:29,130 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 842 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:29,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 193 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 04:19:29,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52206 states. [2024-11-16 04:19:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52206 to 49647. [2024-11-16 04:19:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49647 states, 49646 states have (on average 1.1095355114208596) internal successors, (55084), 49646 states have internal predecessors, (55084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49647 states to 49647 states and 55084 transitions. [2024-11-16 04:19:29,747 INFO L78 Accepts]: Start accepts. Automaton has 49647 states and 55084 transitions. Word has length 323 [2024-11-16 04:19:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:29,748 INFO L471 AbstractCegarLoop]: Abstraction has 49647 states and 55084 transitions. [2024-11-16 04:19:29,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 49647 states and 55084 transitions. [2024-11-16 04:19:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-16 04:19:29,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:29,753 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-16 04:19:29,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 04:19:29,954 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,SelfDestructingSolverStorable12 [2024-11-16 04:19:29,954 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:29,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash -11041804, now seen corresponding path program 1 times [2024-11-16 04:19:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:29,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63774494] [2024-11-16 04:19:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:29,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-16 04:19:30,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:30,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63774494] [2024-11-16 04:19:30,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63774494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:30,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:30,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291752974] [2024-11-16 04:19:30,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:30,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:30,326 INFO L87 Difference]: Start difference. First operand 49647 states and 55084 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:35,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-16 04:19:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:35,952 INFO L93 Difference]: Finished difference Result 119812 states and 132606 transitions. [2024-11-16 04:19:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:35,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 421 [2024-11-16 04:19:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:36,030 INFO L225 Difference]: With dead ends: 119812 [2024-11-16 04:19:36,030 INFO L226 Difference]: Without dead ends: 69740 [2024-11-16 04:19:36,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:36,068 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 472 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 173 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:36,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 352 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1362 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2024-11-16 04:19:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69740 states. [2024-11-16 04:19:36,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69740 to 68423. [2024-11-16 04:19:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68423 states, 68422 states have (on average 1.1017947443804623) internal successors, (75387), 68422 states have internal predecessors, (75387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68423 states to 68423 states and 75387 transitions. [2024-11-16 04:19:36,848 INFO L78 Accepts]: Start accepts. Automaton has 68423 states and 75387 transitions. Word has length 421 [2024-11-16 04:19:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:36,849 INFO L471 AbstractCegarLoop]: Abstraction has 68423 states and 75387 transitions. [2024-11-16 04:19:36,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 68423 states and 75387 transitions. [2024-11-16 04:19:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-16 04:19:36,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:36,856 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:36,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 04:19:36,857 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:36,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:36,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1653059630, now seen corresponding path program 1 times [2024-11-16 04:19:36,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:36,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649034656] [2024-11-16 04:19:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:36,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-16 04:19:37,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:37,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649034656] [2024-11-16 04:19:37,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649034656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:37,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:37,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:37,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935722063] [2024-11-16 04:19:37,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:37,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:37,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:37,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:37,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:37,039 INFO L87 Difference]: Start difference. First operand 68423 states and 75387 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:38,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:38,886 INFO L93 Difference]: Finished difference Result 151355 states and 166900 transitions. [2024-11-16 04:19:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:38,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 448 [2024-11-16 04:19:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:39,160 INFO L225 Difference]: With dead ends: 151355 [2024-11-16 04:19:39,161 INFO L226 Difference]: Without dead ends: 82507 [2024-11-16 04:19:39,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:39,189 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 490 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:39,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 305 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:19:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82507 states. [2024-11-16 04:19:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82507 to 63280. [2024-11-16 04:19:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63280 states, 63279 states have (on average 1.1035888683449486) internal successors, (69834), 63279 states have internal predecessors, (69834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63280 states to 63280 states and 69834 transitions. [2024-11-16 04:19:40,085 INFO L78 Accepts]: Start accepts. Automaton has 63280 states and 69834 transitions. Word has length 448 [2024-11-16 04:19:40,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:40,085 INFO L471 AbstractCegarLoop]: Abstraction has 63280 states and 69834 transitions. [2024-11-16 04:19:40,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:40,086 INFO L276 IsEmpty]: Start isEmpty. Operand 63280 states and 69834 transitions. [2024-11-16 04:19:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-16 04:19:40,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:40,095 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:40,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 04:19:40,095 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:40,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:40,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2111962884, now seen corresponding path program 1 times [2024-11-16 04:19:40,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:40,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257690972] [2024-11-16 04:19:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:19:40,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:40,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257690972] [2024-11-16 04:19:40,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257690972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:40,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:40,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:40,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007068337] [2024-11-16 04:19:40,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:40,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:40,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:40,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:40,500 INFO L87 Difference]: Start difference. First operand 63280 states and 69834 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:42,262 INFO L93 Difference]: Finished difference Result 138935 states and 153343 transitions. [2024-11-16 04:19:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:42,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 459 [2024-11-16 04:19:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:42,346 INFO L225 Difference]: With dead ends: 138935 [2024-11-16 04:19:42,346 INFO L226 Difference]: Without dead ends: 75224 [2024-11-16 04:19:42,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:42,385 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 502 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:42,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 173 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:19:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75224 states. [2024-11-16 04:19:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75224 to 72223. [2024-11-16 04:19:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72223 states, 72222 states have (on average 1.1035557032483176) internal successors, (79701), 72222 states have internal predecessors, (79701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72223 states to 72223 states and 79701 transitions. [2024-11-16 04:19:43,306 INFO L78 Accepts]: Start accepts. Automaton has 72223 states and 79701 transitions. Word has length 459 [2024-11-16 04:19:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:43,307 INFO L471 AbstractCegarLoop]: Abstraction has 72223 states and 79701 transitions. [2024-11-16 04:19:43,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 72223 states and 79701 transitions. [2024-11-16 04:19:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-16 04:19:43,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:43,317 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:43,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 04:19:43,317 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:43,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:43,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2019467786, now seen corresponding path program 1 times [2024-11-16 04:19:43,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:43,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163713937] [2024-11-16 04:19:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:43,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:44,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:44,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163713937] [2024-11-16 04:19:44,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163713937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:44,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:44,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:19:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995066314] [2024-11-16 04:19:44,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:44,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:44,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:44,052 INFO L87 Difference]: Start difference. First operand 72223 states and 79701 transitions. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:46,531 INFO L93 Difference]: Finished difference Result 170081 states and 187736 transitions. [2024-11-16 04:19:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:46,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 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 480 [2024-11-16 04:19:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:46,640 INFO L225 Difference]: With dead ends: 170081 [2024-11-16 04:19:46,640 INFO L226 Difference]: Without dead ends: 97860 [2024-11-16 04:19:46,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:46,682 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 640 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:46,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 182 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 04:19:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97860 states. [2024-11-16 04:19:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97860 to 92306. [2024-11-16 04:19:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92306 states, 92305 states have (on average 1.105151400249174) internal successors, (102011), 92305 states have internal predecessors, (102011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92306 states to 92306 states and 102011 transitions. [2024-11-16 04:19:48,047 INFO L78 Accepts]: Start accepts. Automaton has 92306 states and 102011 transitions. Word has length 480 [2024-11-16 04:19:48,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:48,047 INFO L471 AbstractCegarLoop]: Abstraction has 92306 states and 102011 transitions. [2024-11-16 04:19:48,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 92306 states and 102011 transitions. [2024-11-16 04:19:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2024-11-16 04:19:48,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:48,061 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:48,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 04:19:48,062 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:48,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash 241649702, now seen corresponding path program 1 times [2024-11-16 04:19:48,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:48,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302563436] [2024-11-16 04:19:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:48,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 83 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 04:19:49,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302563436] [2024-11-16 04:19:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302563436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821370885] [2024-11-16 04:19:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:19:49,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:19:49,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:19:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:49,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 04:19:49,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:19:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 83 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 04:19:50,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:19:51,505 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 83 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 04:19:51,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821370885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:19:51,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:19:51,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-16 04:19:51,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292261778] [2024-11-16 04:19:51,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:19:51,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 04:19:51,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 04:19:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:19:51,510 INFO L87 Difference]: Start difference. First operand 92306 states and 102011 transitions. Second operand has 8 states, 8 states have (on average 121.75) internal successors, (974), 7 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:57,154 INFO L93 Difference]: Finished difference Result 209782 states and 231829 transitions. [2024-11-16 04:19:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 04:19:57,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 121.75) internal successors, (974), 7 states have internal predecessors, (974), 0 states have call successors, (0), 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 523 [2024-11-16 04:19:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:57,297 INFO L225 Difference]: With dead ends: 209782 [2024-11-16 04:19:57,297 INFO L226 Difference]: Without dead ends: 116626 [2024-11-16 04:19:57,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1041 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:19:57,323 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 2405 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 5952 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 7170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 5952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:57,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 341 Invalid, 7170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1218 Valid, 5952 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-16 04:19:57,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116626 states. [2024-11-16 04:19:58,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116626 to 107224. [2024-11-16 04:19:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107224 states, 107223 states have (on average 1.105798196282514) internal successors, (118567), 107223 states have internal predecessors, (118567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107224 states to 107224 states and 118567 transitions. [2024-11-16 04:19:58,960 INFO L78 Accepts]: Start accepts. Automaton has 107224 states and 118567 transitions. Word has length 523 [2024-11-16 04:19:58,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:58,960 INFO L471 AbstractCegarLoop]: Abstraction has 107224 states and 118567 transitions. [2024-11-16 04:19:58,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.75) internal successors, (974), 7 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 107224 states and 118567 transitions. [2024-11-16 04:19:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-16 04:19:58,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:58,969 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:58,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 04:19:59,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 04:19:59,170 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:59,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:59,171 INFO L85 PathProgramCache]: Analyzing trace with hash -726037851, now seen corresponding path program 1 times [2024-11-16 04:19:59,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:59,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158916823] [2024-11-16 04:19:59,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:59,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:19:59,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:59,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158916823] [2024-11-16 04:19:59,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158916823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:59,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:59,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:59,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567315840] [2024-11-16 04:19:59,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:59,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:59,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:59,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:59,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:59,693 INFO L87 Difference]: Start difference. First operand 107224 states and 118567 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:20:01,407 INFO L93 Difference]: Finished difference Result 211878 states and 234298 transitions. [2024-11-16 04:20:01,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:20:01,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 528 [2024-11-16 04:20:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:20:01,540 INFO L225 Difference]: With dead ends: 211878 [2024-11-16 04:20:01,541 INFO L226 Difference]: Without dead ends: 104655 [2024-11-16 04:20:01,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:01,585 INFO L432 NwaCegarLoop]: 658 mSDtfsCounter, 479 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:20:01,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 722 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:20:01,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104655 states. [2024-11-16 04:20:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104655 to 100813. [2024-11-16 04:20:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100813 states, 100812 states have (on average 1.0849700432488196) internal successors, (109378), 100812 states have internal predecessors, (109378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100813 states to 100813 states and 109378 transitions. [2024-11-16 04:20:03,404 INFO L78 Accepts]: Start accepts. Automaton has 100813 states and 109378 transitions. Word has length 528 [2024-11-16 04:20:03,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:03,404 INFO L471 AbstractCegarLoop]: Abstraction has 100813 states and 109378 transitions. [2024-11-16 04:20:03,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 100813 states and 109378 transitions. [2024-11-16 04:20:03,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2024-11-16 04:20:03,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:03,417 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:20:03,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 04:20:03,417 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:03,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1044649506, now seen corresponding path program 1 times [2024-11-16 04:20:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993425308] [2024-11-16 04:20:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:03,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:20:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:20:03,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:20:03,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993425308] [2024-11-16 04:20:03,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993425308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:20:03,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:20:03,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:20:03,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065278506] [2024-11-16 04:20:03,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:20:03,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:20:03,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:20:03,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:20:03,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:20:03,950 INFO L87 Difference]: Start difference. First operand 100813 states and 109378 transitions. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:20:06,486 INFO L93 Difference]: Finished difference Result 219565 states and 238293 transitions. [2024-11-16 04:20:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:20:06,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 610 [2024-11-16 04:20:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:20:06,617 INFO L225 Difference]: With dead ends: 219565 [2024-11-16 04:20:06,617 INFO L226 Difference]: Without dead ends: 118754 [2024-11-16 04:20:06,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:20:06,650 INFO L432 NwaCegarLoop]: 581 mSDtfsCounter, 539 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:20:06,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 698 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2817 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 04:20:06,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118754 states. [2024-11-16 04:20:08,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118754 to 114466. [2024-11-16 04:20:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114466 states, 114465 states have (on average 1.0875464115668545) internal successors, (124486), 114465 states have internal predecessors, (124486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114466 states to 114466 states and 124486 transitions. [2024-11-16 04:20:08,594 INFO L78 Accepts]: Start accepts. Automaton has 114466 states and 124486 transitions. Word has length 610 [2024-11-16 04:20:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:08,597 INFO L471 AbstractCegarLoop]: Abstraction has 114466 states and 124486 transitions. [2024-11-16 04:20:08,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 114466 states and 124486 transitions. [2024-11-16 04:20:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2024-11-16 04:20:08,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:08,610 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:20:08,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 04:20:08,611 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:08,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:08,611 INFO L85 PathProgramCache]: Analyzing trace with hash -160008880, now seen corresponding path program 1 times [2024-11-16 04:20:08,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:08,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083636782] [2024-11-16 04:20:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:08,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:20:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-16 04:20:08,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:20:08,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083636782] [2024-11-16 04:20:08,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083636782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:20:08,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:20:08,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:20:08,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259104080] [2024-11-16 04:20:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:20:08,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:20:08,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:20:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:20:08,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:08,870 INFO L87 Difference]: Start difference. First operand 114466 states and 124486 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:20:10,054 INFO L93 Difference]: Finished difference Result 224648 states and 244184 transitions. [2024-11-16 04:20:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:20:10,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 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 621 [2024-11-16 04:20:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:20:10,186 INFO L225 Difference]: With dead ends: 224648 [2024-11-16 04:20:10,186 INFO L226 Difference]: Without dead ends: 110184 [2024-11-16 04:20:10,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:10,238 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 432 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:20:10,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 100 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 04:20:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110184 states. [2024-11-16 04:20:11,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110184 to 109753. [2024-11-16 04:20:11,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109753 states, 109752 states have (on average 1.0864038924119834) internal successors, (119235), 109752 states have internal predecessors, (119235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109753 states to 109753 states and 119235 transitions. [2024-11-16 04:20:11,851 INFO L78 Accepts]: Start accepts. Automaton has 109753 states and 119235 transitions. Word has length 621 [2024-11-16 04:20:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:11,851 INFO L471 AbstractCegarLoop]: Abstraction has 109753 states and 119235 transitions. [2024-11-16 04:20:11,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 109753 states and 119235 transitions. [2024-11-16 04:20:11,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2024-11-16 04:20:11,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:11,874 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:20:11,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 04:20:11,875 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:11,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1376040909, now seen corresponding path program 1 times [2024-11-16 04:20:11,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:11,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575920110] [2024-11-16 04:20:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:11,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:20:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-16 04:20:12,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:20:12,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575920110] [2024-11-16 04:20:12,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575920110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:20:12,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:20:12,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:20:12,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835357148] [2024-11-16 04:20:12,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:20:12,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:20:12,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:20:12,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:20:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:20:12,805 INFO L87 Difference]: Start difference. First operand 109753 states and 119235 transitions. Second operand has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)