./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.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/array-programs/partial_mod_count_limited_base.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 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:36:44,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:36:44,540 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:36:44,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:36:44,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:36:44,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:36:44,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:36:44,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:36:44,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:36:44,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:36:44,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:36:44,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:36:44,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:36:44,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:36:44,581 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:36:44,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:36:44,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:36:44,582 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:36:44,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:36:44,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:36:44,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:36:44,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:36:44,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:36:44,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:36:44,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:36:44,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:36:44,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:36:44,588 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:36:44,588 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:36:44,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:36:44,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:36:44,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:36:44,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:36:44,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:36:44,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:36:44,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:36:44,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:36:44,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:36:44,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:36:44,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:36:44,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:36:44,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:36:44,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 [2024-11-16 02:36:44,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:36:44,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:36:44,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:36:44,874 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:36:44,874 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:36:44,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2024-11-16 02:36:46,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:36:46,493 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:36:46,495 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2024-11-16 02:36:46,504 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b7e0c9d9/3a61507af96b4d36a6254d0fb399a848/FLAG72e379bd6 [2024-11-16 02:36:46,521 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b7e0c9d9/3a61507af96b4d36a6254d0fb399a848 [2024-11-16 02:36:46,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:36:46,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:36:46,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:36:46,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:36:46,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:36:46,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a137d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46, skipping insertion in model container [2024-11-16 02:36:46,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:36:46,781 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/array-programs/partial_mod_count_limited_base.c[334,347] [2024-11-16 02:36:46,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:36:46,806 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:36:46,815 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/array-programs/partial_mod_count_limited_base.c[334,347] [2024-11-16 02:36:46,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:36:46,838 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:36:46,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46 WrapperNode [2024-11-16 02:36:46,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:36:46,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:36:46,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:36:46,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:36:46,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,868 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-11-16 02:36:46,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:36:46,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:36:46,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:36:46,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:36:46,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,881 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,900 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-16 02:36:46,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,914 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:36:46,923 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:36:46,923 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:36:46,923 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:36:46,924 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (1/1) ... [2024-11-16 02:36:46,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:36:46,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:36:46,961 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 02:36:46,968 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 02:36:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:36:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:36:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:36:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:36:47,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:36:47,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:36:47,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:36:47,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:36:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:36:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:36:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:36:47,104 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:36:47,106 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:36:47,259 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L12: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2024-11-16 02:36:47,267 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-16 02:36:47,267 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:36:47,279 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:36:47,279 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:36:47,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:36:47 BoogieIcfgContainer [2024-11-16 02:36:47,280 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:36:47,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:36:47,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:36:47,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:36:47,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:36:46" (1/3) ... [2024-11-16 02:36:47,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8e5c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:36:47, skipping insertion in model container [2024-11-16 02:36:47,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:36:46" (2/3) ... [2024-11-16 02:36:47,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8e5c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:36:47, skipping insertion in model container [2024-11-16 02:36:47,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:36:47" (3/3) ... [2024-11-16 02:36:47,291 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2024-11-16 02:36:47,307 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:36:47,307 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:36:47,365 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:36:47,373 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;@48f5868c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:36:47,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:36:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 02:36:47,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:47,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:47,388 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:47,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:47,393 INFO L85 PathProgramCache]: Analyzing trace with hash 799439319, now seen corresponding path program 1 times [2024-11-16 02:36:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:47,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302258397] [2024-11-16 02:36:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:47,578 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 02:36:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302258397] [2024-11-16 02:36:47,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302258397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:36:47,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:36:47,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:36:47,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046050880] [2024-11-16 02:36:47,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:36:47,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:36:47,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:36:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:36:47,609 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:47,626 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2024-11-16 02:36:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:36:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-16 02:36:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:47,636 INFO L225 Difference]: With dead ends: 46 [2024-11-16 02:36:47,636 INFO L226 Difference]: Without dead ends: 20 [2024-11-16 02:36:47,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:36:47,645 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:47,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:36:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-16 02:36:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-16 02:36:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-16 02:36:47,679 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2024-11-16 02:36:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:47,680 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-16 02:36:47,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:47,680 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-16 02:36:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 02:36:47,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:47,682 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:47,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:36:47,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:47,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2014035567, now seen corresponding path program 1 times [2024-11-16 02:36:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:47,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745934509] [2024-11-16 02:36:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:47,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:47,891 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 02:36:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745934509] [2024-11-16 02:36:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745934509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:36:47,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:36:47,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:36:47,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036918976] [2024-11-16 02:36:47,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:36:47,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:36:47,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:47,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:36:47,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:36:47,896 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:47,948 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2024-11-16 02:36:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:36:47,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-16 02:36:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:47,949 INFO L225 Difference]: With dead ends: 51 [2024-11-16 02:36:47,950 INFO L226 Difference]: Without dead ends: 35 [2024-11-16 02:36:47,950 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 02:36:47,951 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:47,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 27 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:36:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-16 02:36:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2024-11-16 02:36:47,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:47,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-16 02:36:47,958 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 14 [2024-11-16 02:36:47,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:47,958 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-16 02:36:47,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-16 02:36:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 02:36:47,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:47,960 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:47,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:36:47,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:47,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:47,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2111415021, now seen corresponding path program 1 times [2024-11-16 02:36:47,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:47,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629184537] [2024-11-16 02:36:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:47,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:36:48,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:48,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629184537] [2024-11-16 02:36:48,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629184537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:36:48,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:36:48,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 02:36:48,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100401934] [2024-11-16 02:36:48,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:36:48,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 02:36:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 02:36:48,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:36:48,213 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:48,284 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-11-16 02:36:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 02:36:48,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-16 02:36:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:48,289 INFO L225 Difference]: With dead ends: 51 [2024-11-16 02:36:48,289 INFO L226 Difference]: Without dead ends: 35 [2024-11-16 02:36:48,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-16 02:36:48,290 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:48,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:36:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-16 02:36:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2024-11-16 02:36:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-16 02:36:48,300 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2024-11-16 02:36:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:48,300 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-16 02:36:48,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:48,301 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-16 02:36:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 02:36:48,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:48,301 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:48,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 02:36:48,302 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:48,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2054469556, now seen corresponding path program 1 times [2024-11-16 02:36:48,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:48,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076241419] [2024-11-16 02:36:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:48,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:36:48,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:48,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076241419] [2024-11-16 02:36:48,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076241419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:36:48,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:36:48,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 02:36:48,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835228024] [2024-11-16 02:36:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:36:48,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 02:36:48,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 02:36:48,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:36:48,461 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:48,501 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2024-11-16 02:36:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:36:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 20 [2024-11-16 02:36:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:48,503 INFO L225 Difference]: With dead ends: 40 [2024-11-16 02:36:48,504 INFO L226 Difference]: Without dead ends: 37 [2024-11-16 02:36:48,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:36:48,506 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:48,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:36:48,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-16 02:36:48,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-16 02:36:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-11-16 02:36:48,518 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 20 [2024-11-16 02:36:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:48,518 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-11-16 02:36:48,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-11-16 02:36:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:36:48,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:48,520 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:48,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 02:36:48,521 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:48,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1096563180, now seen corresponding path program 1 times [2024-11-16 02:36:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:48,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758457017] [2024-11-16 02:36:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:48,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:36:48,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:48,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758457017] [2024-11-16 02:36:48,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758457017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:36:48,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062205854] [2024-11-16 02:36:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:48,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:36:48,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:36:48,712 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 02:36:48,713 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 02:36:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:48,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:36:48,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:36:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:36:48,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:36:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:36:48,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062205854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:36:48,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:36:48,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-16 02:36:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859175150] [2024-11-16 02:36:48,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:36:48,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 02:36:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 02:36:48,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:36:48,965 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:49,075 INFO L93 Difference]: Finished difference Result 134 states and 159 transitions. [2024-11-16 02:36:49,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:36:49,076 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2024-11-16 02:36:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:49,077 INFO L225 Difference]: With dead ends: 134 [2024-11-16 02:36:49,077 INFO L226 Difference]: Without dead ends: 106 [2024-11-16 02:36:49,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-16 02:36:49,079 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 134 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:49,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 53 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:36:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-16 02:36:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 52. [2024-11-16 02:36:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2024-11-16 02:36:49,087 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 26 [2024-11-16 02:36:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:49,088 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2024-11-16 02:36:49,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2024-11-16 02:36:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 02:36:49,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:49,089 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:49,106 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 02:36:49,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:36:49,290 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:49,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:49,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1814067690, now seen corresponding path program 1 times [2024-11-16 02:36:49,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:49,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084123166] [2024-11-16 02:36:49,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 02:36:49,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084123166] [2024-11-16 02:36:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084123166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:36:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581987449] [2024-11-16 02:36:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:49,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:36:49,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:36:49,530 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 02:36:49,531 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 02:36:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:49,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:36:49,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:36:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 02:36:49,666 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:36:49,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581987449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:36:49,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:36:49,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-16 02:36:49,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590804939] [2024-11-16 02:36:49,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:36:49,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:36:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:49,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:36:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:36:49,671 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:49,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:49,693 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2024-11-16 02:36:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:36:49,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 44 [2024-11-16 02:36:49,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:49,695 INFO L225 Difference]: With dead ends: 122 [2024-11-16 02:36:49,697 INFO L226 Difference]: Without dead ends: 89 [2024-11-16 02:36:49,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:36:49,698 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:49,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 46 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:36:49,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-16 02:36:49,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2024-11-16 02:36:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.196969696969697) internal successors, (79), 66 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2024-11-16 02:36:49,709 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 44 [2024-11-16 02:36:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:49,710 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2024-11-16 02:36:49,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2024-11-16 02:36:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 02:36:49,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:49,711 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:49,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:36:49,912 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,SelfDestructingSolverStorable5 [2024-11-16 02:36:49,912 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:49,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:49,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1436263272, now seen corresponding path program 1 times [2024-11-16 02:36:49,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:49,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356515361] [2024-11-16 02:36:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:49,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 02:36:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356515361] [2024-11-16 02:36:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356515361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:36:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745860345] [2024-11-16 02:36:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:50,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:36:50,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:36:50,157 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 02:36:50,159 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 02:36:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:50,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 02:36:50,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:36:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:36:50,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:36:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:36:50,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745860345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:36:50,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:36:50,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-16 02:36:50,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021480203] [2024-11-16 02:36:50,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:36:50,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:36:50,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:50,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:36:50,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:36:50,601 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 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 02:36:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:51,044 INFO L93 Difference]: Finished difference Result 381 states and 461 transitions. [2024-11-16 02:36:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:36:51,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 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 44 [2024-11-16 02:36:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:51,046 INFO L225 Difference]: With dead ends: 381 [2024-11-16 02:36:51,046 INFO L226 Difference]: Without dead ends: 333 [2024-11-16 02:36:51,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:36:51,048 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 373 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:51,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 185 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:36:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-16 02:36:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 133. [2024-11-16 02:36:51,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.196969696969697) internal successors, (158), 132 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 158 transitions. [2024-11-16 02:36:51,062 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 158 transitions. Word has length 44 [2024-11-16 02:36:51,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:51,063 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 158 transitions. [2024-11-16 02:36:51,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 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 02:36:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 158 transitions. [2024-11-16 02:36:51,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 02:36:51,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:51,065 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:51,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:36:51,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:36:51,266 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:51,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:51,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1251172561, now seen corresponding path program 2 times [2024-11-16 02:36:51,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:51,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549238427] [2024-11-16 02:36:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:51,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-16 02:36:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:51,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549238427] [2024-11-16 02:36:51,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549238427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:36:51,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:36:51,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 02:36:51,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698779364] [2024-11-16 02:36:51,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:36:51,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 02:36:51,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:51,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 02:36:51,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:36:51,617 INFO L87 Difference]: Start difference. First operand 133 states and 158 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:51,697 INFO L93 Difference]: Finished difference Result 268 states and 316 transitions. [2024-11-16 02:36:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:36:51,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 02:36:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:51,699 INFO L225 Difference]: With dead ends: 268 [2024-11-16 02:36:51,699 INFO L226 Difference]: Without dead ends: 207 [2024-11-16 02:36:51,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:36:51,700 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:51,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 68 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:36:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-16 02:36:51,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 182. [2024-11-16 02:36:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.171270718232044) internal successors, (212), 181 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 212 transitions. [2024-11-16 02:36:51,713 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 212 transitions. Word has length 80 [2024-11-16 02:36:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:51,714 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 212 transitions. [2024-11-16 02:36:51,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:51,714 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 212 transitions. [2024-11-16 02:36:51,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 02:36:51,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:51,716 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 6, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:51,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 02:36:51,716 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:51,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1674846037, now seen corresponding path program 3 times [2024-11-16 02:36:51,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:51,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492518243] [2024-11-16 02:36:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:51,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 196 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 02:36:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492518243] [2024-11-16 02:36:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492518243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:36:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019064137] [2024-11-16 02:36:52,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:36:52,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:36:52,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:36:52,043 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:36:52,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:36:52,119 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 02:36:52,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:36:52,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:36:52,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:36:52,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-16 02:36:52,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-16 02:36:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-16 02:36:52,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:36:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-16 02:36:52,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019064137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:36:52,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:36:52,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2024-11-16 02:36:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819373962] [2024-11-16 02:36:52,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:36:52,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 02:36:52,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:52,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 02:36:52,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:36:52,529 INFO L87 Difference]: Start difference. First operand 182 states and 212 transitions. Second operand has 21 states, 21 states have (on average 4.380952380952381) internal successors, (92), 21 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 02:36:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:52,886 INFO L93 Difference]: Finished difference Result 315 states and 362 transitions. [2024-11-16 02:36:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 02:36:52,887 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.380952380952381) internal successors, (92), 21 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 80 [2024-11-16 02:36:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:52,888 INFO L225 Difference]: With dead ends: 315 [2024-11-16 02:36:52,889 INFO L226 Difference]: Without dead ends: 209 [2024-11-16 02:36:52,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=383, Invalid=949, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 02:36:52,892 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 309 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:52,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 113 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:36:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-16 02:36:52,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 125. [2024-11-16 02:36:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.1290322580645162) internal successors, (140), 124 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:36:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2024-11-16 02:36:52,910 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 80 [2024-11-16 02:36:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:52,910 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2024-11-16 02:36:52,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.380952380952381) internal successors, (92), 21 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 02:36:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2024-11-16 02:36:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 02:36:52,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:52,911 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:52,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:36:53,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:36:53,119 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:53,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:53,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2115406167, now seen corresponding path program 2 times [2024-11-16 02:36:53,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:53,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65286626] [2024-11-16 02:36:53,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:53,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 159 proven. 75 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-16 02:36:53,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:53,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65286626] [2024-11-16 02:36:53,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65286626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:36:53,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616167726] [2024-11-16 02:36:53,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:36:53,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:36:53,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:36:53,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:36:53,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:36:53,590 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:36:53,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:36:53,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 02:36:53,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:36:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:36:53,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:36:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:36:54,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616167726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:36:54,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:36:54,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2024-11-16 02:36:54,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124247548] [2024-11-16 02:36:54,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:36:54,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 02:36:54,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:54,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 02:36:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=618, Unknown=0, NotChecked=0, Total=992 [2024-11-16 02:36:54,270 INFO L87 Difference]: Start difference. First operand 125 states and 140 transitions. Second operand has 32 states, 32 states have (on average 5.75) internal successors, (184), 31 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 02:36:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:36:54,864 INFO L93 Difference]: Finished difference Result 763 states and 892 transitions. [2024-11-16 02:36:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 02:36:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.75) internal successors, (184), 31 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 80 [2024-11-16 02:36:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:36:54,867 INFO L225 Difference]: With dead ends: 763 [2024-11-16 02:36:54,867 INFO L226 Difference]: Without dead ends: 677 [2024-11-16 02:36:54,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=671, Invalid=1135, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 02:36:54,869 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1175 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:36:54,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 298 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:36:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-16 02:36:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 245. [2024-11-16 02:36:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.1147540983606556) internal successors, (272), 244 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 02:36:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 272 transitions. [2024-11-16 02:36:54,887 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 272 transitions. Word has length 80 [2024-11-16 02:36:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:36:54,887 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 272 transitions. [2024-11-16 02:36:54,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.75) internal successors, (184), 31 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 02:36:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 272 transitions. [2024-11-16 02:36:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-16 02:36:54,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:36:54,889 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 21, 21, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:36:54,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:36:55,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 02:36:55,090 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:36:55,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:36:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash 777014509, now seen corresponding path program 3 times [2024-11-16 02:36:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:36:55,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639076216] [2024-11-16 02:36:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:36:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:36:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:36:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 747 proven. 363 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-16 02:36:55,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:36:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639076216] [2024-11-16 02:36:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639076216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:36:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241934046] [2024-11-16 02:36:55,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:36:55,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:36:55,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:36:55,949 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:36:55,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:36:56,089 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-16 02:36:56,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:36:56,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:36:56,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:36:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 745 proven. 385 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-16 02:36:56,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:36:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 1130 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-16 02:36:57,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241934046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:36:57,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:36:57,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 43 [2024-11-16 02:36:57,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246179459] [2024-11-16 02:36:57,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:36:57,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 02:36:57,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:36:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 02:36:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=1374, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:36:57,284 INFO L87 Difference]: Start difference. First operand 245 states and 272 transitions. Second operand has 44 states, 44 states have (on average 5.7272727272727275) internal successors, (252), 43 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:37:00,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:00,042 INFO L93 Difference]: Finished difference Result 2239 states and 2632 transitions. [2024-11-16 02:37:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-16 02:37:00,043 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.7272727272727275) internal successors, (252), 43 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2024-11-16 02:37:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:00,053 INFO L225 Difference]: With dead ends: 2239 [2024-11-16 02:37:00,053 INFO L226 Difference]: Without dead ends: 2069 [2024-11-16 02:37:00,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4433 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4418, Invalid=8922, Unknown=0, NotChecked=0, Total=13340 [2024-11-16 02:37:00,059 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1997 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:00,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 438 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:37:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2024-11-16 02:37:00,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 534. [2024-11-16 02:37:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 1.148217636022514) internal successors, (612), 533 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:37:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 612 transitions. [2024-11-16 02:37:00,124 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 612 transitions. Word has length 152 [2024-11-16 02:37:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:00,125 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 612 transitions. [2024-11-16 02:37:00,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.7272727272727275) internal successors, (252), 43 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:37:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 612 transitions. [2024-11-16 02:37:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-16 02:37:00,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:00,128 INFO L215 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:00,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 02:37:00,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:00,329 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:00,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:00,329 INFO L85 PathProgramCache]: Analyzing trace with hash 201028453, now seen corresponding path program 2 times [2024-11-16 02:37:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:00,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532378782] [2024-11-16 02:37:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:00,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 0 proven. 3852 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:37:02,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532378782] [2024-11-16 02:37:02,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532378782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:02,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466457684] [2024-11-16 02:37:02,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:37:02,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:02,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:02,649 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:02,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:37:02,792 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:37:02,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:02,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 02:37:02,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 0 proven. 3852 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:37:04,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 0 proven. 3852 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:37:05,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466457684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:05,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:05,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 114 [2024-11-16 02:37:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070363478] [2024-11-16 02:37:05,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:05,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2024-11-16 02:37:05,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:05,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2024-11-16 02:37:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5779, Invalid=7331, Unknown=0, NotChecked=0, Total=13110 [2024-11-16 02:37:05,958 INFO L87 Difference]: Start difference. First operand 534 states and 612 transitions. Second operand has 115 states, 115 states have (on average 5.852173913043479) internal successors, (673), 114 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:37:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:10,526 INFO L93 Difference]: Finished difference Result 13049 states and 15210 transitions. [2024-11-16 02:37:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-16 02:37:10,527 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 5.852173913043479) internal successors, (673), 114 states have internal predecessors, (673), 0 states have call successors, (0), 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 236 [2024-11-16 02:37:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:10,568 INFO L225 Difference]: With dead ends: 13049 [2024-11-16 02:37:10,569 INFO L226 Difference]: Without dead ends: 12600 [2024-11-16 02:37:10,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8285 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8702, Invalid=14250, Unknown=0, NotChecked=0, Total=22952 [2024-11-16 02:37:10,577 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4683 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:10,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 1030 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:37:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12600 states. [2024-11-16 02:37:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12600 to 942. [2024-11-16 02:37:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 1.1392136025504782) internal successors, (1072), 941 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:37:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1072 transitions. [2024-11-16 02:37:10,751 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1072 transitions. Word has length 236 [2024-11-16 02:37:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:10,752 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1072 transitions. [2024-11-16 02:37:10,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 5.852173913043479) internal successors, (673), 114 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:37:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1072 transitions. [2024-11-16 02:37:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-16 02:37:10,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:10,759 INFO L215 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 73, 73, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:10,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:37:10,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:10,960 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:10,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:10,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2080092823, now seen corresponding path program 4 times [2024-11-16 02:37:10,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:10,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101300484] [2024-11-16 02:37:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:10,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16359 backedges. 8287 proven. 4107 refuted. 0 times theorem prover too weak. 3965 trivial. 0 not checked. [2024-11-16 02:37:15,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:15,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101300484] [2024-11-16 02:37:15,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101300484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:15,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330701466] [2024-11-16 02:37:15,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:37:15,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:15,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:15,264 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:15,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:37:17,916 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:37:17,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:17,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-16 02:37:17,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16359 backedges. 0 proven. 16354 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:37:21,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16359 backedges. 0 proven. 16354 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:37:27,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330701466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:27,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:27,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 77, 77] total 191 [2024-11-16 02:37:27,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124312021] [2024-11-16 02:37:27,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:27,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-11-16 02:37:27,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:27,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-11-16 02:37:27,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13302, Invalid=23370, Unknown=0, NotChecked=0, Total=36672 [2024-11-16 02:37:27,638 INFO L87 Difference]: Start difference. First operand 942 states and 1072 transitions. Second operand has 192 states, 192 states have (on average 5.958333333333333) internal successors, (1144), 191 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:37:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:54,385 INFO L93 Difference]: Finished difference Result 31361 states and 36628 transitions. [2024-11-16 02:37:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-11-16 02:37:54,386 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 5.958333333333333) internal successors, (1144), 191 states have internal predecessors, (1144), 0 states have call successors, (0), 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 464 [2024-11-16 02:37:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:54,453 INFO L225 Difference]: With dead ends: 31361 [2024-11-16 02:37:54,454 INFO L226 Difference]: Without dead ends: 30650 [2024-11-16 02:37:54,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22535 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=24927, Invalid=46095, Unknown=0, NotChecked=0, Total=71022 [2024-11-16 02:37:54,470 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 10777 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10777 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:54,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10777 Valid, 1777 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 02:37:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30650 states. [2024-11-16 02:37:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30650 to 1702. [2024-11-16 02:37:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 1.1216931216931216) internal successors, (1908), 1701 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:37:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 1908 transitions. [2024-11-16 02:37:55,348 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 1908 transitions. Word has length 464 [2024-11-16 02:37:55,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:55,348 INFO L471 AbstractCegarLoop]: Abstraction has 1702 states and 1908 transitions. [2024-11-16 02:37:55,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 5.958333333333333) internal successors, (1144), 191 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:37:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 1908 transitions. [2024-11-16 02:37:55,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2024-11-16 02:37:55,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:55,374 INFO L215 NwaCegarLoop]: trace histogram [151, 150, 150, 150, 149, 149, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:55,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:37:55,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 02:37:55,575 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:55,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1579124115, now seen corresponding path program 5 times [2024-11-16 02:37:55,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:55,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552861777] [2024-11-16 02:37:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:55,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:38:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 67355 backedges. 33899 proven. 16875 refuted. 0 times theorem prover too weak. 16581 trivial. 0 not checked. [2024-11-16 02:38:07,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:38:07,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552861777] [2024-11-16 02:38:07,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552861777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:38:07,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987567402] [2024-11-16 02:38:07,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:38:07,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:38:07,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:38:07,651 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:38:07,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process