./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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_2.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 d1c5dbef70eb17e658ce13a53ba3c925aaef4da45bcaa9e57399f7ada50ab560 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:07:44,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:07:44,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:07:44,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:07:44,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:07:44,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:07:44,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:07:44,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:07:44,200 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:07:44,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:07:44,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:07:44,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:07:44,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:07:44,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:07:44,205 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:07:44,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:07:44,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:07:44,206 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:07:44,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:07:44,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:07:44,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:07:44,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:07:44,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:07:44,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:07:44,208 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:07:44,208 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:07:44,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:07:44,209 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:07:44,209 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:07:44,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:07:44,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:07:44,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:07:44,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:07:44,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:07:44,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:07:44,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:07:44,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:07:44,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:07:44,211 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:07:44,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:07:44,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:07:44,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:07:44,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1c5dbef70eb17e658ce13a53ba3c925aaef4da45bcaa9e57399f7ada50ab560 [2024-11-09 18:07:44,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:07:44,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:07:44,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:07:44,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:07:44,441 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:07:44,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c [2024-11-09 18:07:45,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:07:45,910 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:07:45,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c [2024-11-09 18:07:45,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3705084b/35f69db42e7148cfb998e603e7ed4b7f/FLAG2402705cb [2024-11-09 18:07:45,928 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3705084b/35f69db42e7148cfb998e603e7ed4b7f [2024-11-09 18:07:45,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:07:45,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:07:45,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:07:45,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:07:45,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:07:45,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:07:45" (1/1) ... [2024-11-09 18:07:45,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dabfe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:45, skipping insertion in model container [2024-11-09 18:07:45,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:07:45" (1/1) ... [2024-11-09 18:07:45,955 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:07:46,151 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_2.c[331,344] [2024-11-09 18:07:46,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:07:46,179 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:07:46,188 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_2.c[331,344] [2024-11-09 18:07:46,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:07:46,210 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:07:46,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46 WrapperNode [2024-11-09 18:07:46,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:07:46,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:07:46,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:07:46,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:07:46,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,239 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-09 18:07:46,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:07:46,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:07:46,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:07:46,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:07:46,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,253 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,264 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]. [2024-11-09 18:07:46,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,268 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:07:46,272 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:07:46,272 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:07:46,273 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:07:46,273 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (1/1) ... [2024-11-09 18:07:46,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:07:46,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:46,305 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) [2024-11-09 18:07:46,307 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 [2024-11-09 18:07:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:07:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:07:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:07:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:07:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:07:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:07:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:07:46,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:07:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:07:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:07:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:07:46,405 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:07:46,407 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:07:46,578 INFO L1247 $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; [2024-11-09 18:07:46,592 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 18:07:46,596 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:07:46,605 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:07:46,608 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:07:46,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:07:46 BoogieIcfgContainer [2024-11-09 18:07:46,609 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:07:46,611 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:07:46,612 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:07:46,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:07:46,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:07:45" (1/3) ... [2024-11-09 18:07:46,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb61989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:07:46, skipping insertion in model container [2024-11-09 18:07:46,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:07:46" (2/3) ... [2024-11-09 18:07:46,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb61989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:07:46, skipping insertion in model container [2024-11-09 18:07:46,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:07:46" (3/3) ... [2024-11-09 18:07:46,619 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_2.c [2024-11-09 18:07:46,634 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:07:46,634 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:07:46,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:07:46,702 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;@1ea775f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:07:46,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:07:46,707 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) [2024-11-09 18:07:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 18:07:46,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:46,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:46,714 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:46,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash 799439319, now seen corresponding path program 1 times [2024-11-09 18:07:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:46,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568495299] [2024-11-09 18:07:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:46,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:46,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:46,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568495299] [2024-11-09 18:07:46,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568495299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:07:46,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:07:46,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:07:46,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513806660] [2024-11-09 18:07:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:07:46,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:07:46,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:07:46,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:07:46,921 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) [2024-11-09 18:07:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:46,933 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2024-11-09 18:07:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:07:46,935 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 [2024-11-09 18:07:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:46,940 INFO L225 Difference]: With dead ends: 46 [2024-11-09 18:07:46,941 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 18:07:46,943 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 [2024-11-09 18:07:46,946 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 [2024-11-09 18:07:46,947 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] [2024-11-09 18:07:46,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 18:07:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 18:07:46,968 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) [2024-11-09 18:07:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-09 18:07:46,970 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2024-11-09 18:07:46,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:46,970 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-09 18:07:46,971 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) [2024-11-09 18:07:46,971 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-09 18:07:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 18:07:46,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:46,971 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:46,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:07:46,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:46,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2014035567, now seen corresponding path program 1 times [2024-11-09 18:07:46,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:46,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093426020] [2024-11-09 18:07:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:46,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:47,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:47,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093426020] [2024-11-09 18:07:47,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093426020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:07:47,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:07:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:07:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807475249] [2024-11-09 18:07:47,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:07:47,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:07:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:47,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:07:47,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:07:47,102 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) [2024-11-09 18:07:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:47,178 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2024-11-09 18:07:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:07:47,179 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 [2024-11-09 18:07:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:47,180 INFO L225 Difference]: With dead ends: 51 [2024-11-09 18:07:47,180 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 18:07:47,180 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 [2024-11-09 18:07:47,182 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 50 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:47,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 25 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:07:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 18:07:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2024-11-09 18:07:47,190 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) [2024-11-09 18:07:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-09 18:07:47,191 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 14 [2024-11-09 18:07:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:47,192 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-09 18:07:47,192 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) [2024-11-09 18:07:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-09 18:07:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:07:47,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:47,193 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:47,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:07:47,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:47,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:47,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2111415021, now seen corresponding path program 1 times [2024-11-09 18:07:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112620597] [2024-11-09 18:07:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:47,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:47,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112620597] [2024-11-09 18:07:47,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112620597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:07:47,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:07:47,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 18:07:47,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059775813] [2024-11-09 18:07:47,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:07:47,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 18:07:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:47,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 18:07:47,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:07:47,487 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) [2024-11-09 18:07:47,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:47,542 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-11-09 18:07:47,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:07:47,542 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 [2024-11-09 18:07:47,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:47,543 INFO L225 Difference]: With dead ends: 51 [2024-11-09 18:07:47,543 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 18:07:47,544 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 [2024-11-09 18:07:47,545 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:47,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:07:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 18:07:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2024-11-09 18:07:47,550 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) [2024-11-09 18:07:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-09 18:07:47,550 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2024-11-09 18:07:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:47,551 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-09 18:07:47,551 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) [2024-11-09 18:07:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-09 18:07:47,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:07:47,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:47,553 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:47,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:07:47,553 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:47,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2054469556, now seen corresponding path program 1 times [2024-11-09 18:07:47,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:47,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58266145] [2024-11-09 18:07:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:47,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:47,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:47,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58266145] [2024-11-09 18:07:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58266145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:47,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562966217] [2024-11-09 18:07:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:47,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:47,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:47,662 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) [2024-11-09 18:07:47,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:07:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:47,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:07:47,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:47,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:47,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562966217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:47,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:47,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 18:07:47,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900252352] [2024-11-09 18:07:47,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:47,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:07:47,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:47,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:07:47,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:07:47,839 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:47,952 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2024-11-09 18:07:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:07:47,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 18:07:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:47,954 INFO L225 Difference]: With dead ends: 85 [2024-11-09 18:07:47,954 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 18:07:47,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:07:47,956 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 144 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:47,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 69 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:07:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 18:07:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 40. [2024-11-09 18:07:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-09 18:07:47,966 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 20 [2024-11-09 18:07:47,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:47,966 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-09 18:07:47,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-09 18:07:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 18:07:47,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:47,967 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:47,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:07:48,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:48,170 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:48,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:48,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1815680162, now seen corresponding path program 1 times [2024-11-09 18:07:48,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:48,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442634682] [2024-11-09 18:07:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:48,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:07:48,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:48,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442634682] [2024-11-09 18:07:48,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442634682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:48,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597243289] [2024-11-09 18:07:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:48,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:48,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:48,407 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) [2024-11-09 18:07:48,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:07:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:48,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 18:07:48,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:48,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:48,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597243289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:48,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:48,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-09 18:07:48,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641528739] [2024-11-09 18:07:48,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:48,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:07:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:48,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:07:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:07:48,773 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:49,149 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2024-11-09 18:07:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 18:07:49,150 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-09 18:07:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:49,151 INFO L225 Difference]: With dead ends: 199 [2024-11-09 18:07:49,153 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 18:07:49,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 18:07:49,155 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 485 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:49,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 147 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:07:49,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 18:07:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 76. [2024-11-09 18:07:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 75 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2024-11-09 18:07:49,170 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 38 [2024-11-09 18:07:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:49,172 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2024-11-09 18:07:49,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2024-11-09 18:07:49,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 18:07:49,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:49,174 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 8, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:49,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:07:49,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:49,376 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:49,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:49,377 INFO L85 PathProgramCache]: Analyzing trace with hash -521403892, now seen corresponding path program 2 times [2024-11-09 18:07:49,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:49,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120244440] [2024-11-09 18:07:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:49,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-09 18:07:49,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:49,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120244440] [2024-11-09 18:07:49,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120244440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:07:49,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:07:49,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 18:07:49,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336937493] [2024-11-09 18:07:49,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:07:49,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 18:07:49,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 18:07:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:07:49,789 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:49,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:49,866 INFO L93 Difference]: Finished difference Result 216 states and 268 transitions. [2024-11-09 18:07:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:07:49,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 74 [2024-11-09 18:07:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:49,868 INFO L225 Difference]: With dead ends: 216 [2024-11-09 18:07:49,870 INFO L226 Difference]: Without dead ends: 167 [2024-11-09 18:07:49,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:07:49,871 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:49,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 62 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:07:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-09 18:07:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 131. [2024-11-09 18:07:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2076923076923076) internal successors, (157), 130 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2024-11-09 18:07:49,889 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 74 [2024-11-09 18:07:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:49,890 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2024-11-09 18:07:49,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2024-11-09 18:07:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 18:07:49,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:49,891 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 7, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:49,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:07:49,891 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:49,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash 448177131, now seen corresponding path program 3 times [2024-11-09 18:07:49,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:49,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979360781] [2024-11-09 18:07:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:49,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 163 proven. 35 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 18:07:50,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:50,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979360781] [2024-11-09 18:07:50,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979360781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:50,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612332950] [2024-11-09 18:07:50,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:07:50,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:50,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:50,261 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) [2024-11-09 18:07:50,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:07:50,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 18:07:50,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:50,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 18:07:50,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-09 18:07:50,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:07:50,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612332950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:07:50,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:07:50,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-09 18:07:50,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852040879] [2024-11-09 18:07:50,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:07:50,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:07:50,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:07:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 18:07:50,766 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:50,873 INFO L93 Difference]: Finished difference Result 146 states and 175 transitions. [2024-11-09 18:07:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:07:50,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-09 18:07:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:50,875 INFO L225 Difference]: With dead ends: 146 [2024-11-09 18:07:50,875 INFO L226 Difference]: Without dead ends: 143 [2024-11-09 18:07:50,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:07:50,876 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:50,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 65 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:07:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-09 18:07:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-09 18:07:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.204225352112676) internal successors, (171), 142 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 171 transitions. [2024-11-09 18:07:50,885 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 171 transitions. Word has length 74 [2024-11-09 18:07:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:50,886 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 171 transitions. [2024-11-09 18:07:50,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 171 transitions. [2024-11-09 18:07:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 18:07:50,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:50,887 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 7, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:50,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:07:51,091 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 [2024-11-09 18:07:51,092 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:51,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:51,092 INFO L85 PathProgramCache]: Analyzing trace with hash 966635123, now seen corresponding path program 1 times [2024-11-09 18:07:51,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:51,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526268345] [2024-11-09 18:07:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:51,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 163 proven. 35 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 18:07:51,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:51,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526268345] [2024-11-09 18:07:51,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526268345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:51,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340481151] [2024-11-09 18:07:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:51,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:51,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:51,437 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) [2024-11-09 18:07:51,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:07:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:51,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 18:07:51,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 18:07:51,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 18:07:52,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340481151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:52,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:52,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 30 [2024-11-09 18:07:52,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381564307] [2024-11-09 18:07:52,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:52,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 18:07:52,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 18:07:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=574, Unknown=0, NotChecked=0, Total=930 [2024-11-09 18:07:52,105 INFO L87 Difference]: Start difference. First operand 143 states and 171 transitions. Second operand has 31 states, 31 states have (on average 5.387096774193548) internal successors, (167), 30 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:53,928 INFO L93 Difference]: Finished difference Result 909 states and 1114 transitions. [2024-11-09 18:07:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-09 18:07:53,929 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.387096774193548) internal successors, (167), 30 states have internal predecessors, (167), 0 states have call successors, (0), 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 [2024-11-09 18:07:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:53,931 INFO L225 Difference]: With dead ends: 909 [2024-11-09 18:07:53,931 INFO L226 Difference]: Without dead ends: 829 [2024-11-09 18:07:53,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2497 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2591, Invalid=4719, Unknown=0, NotChecked=0, Total=7310 [2024-11-09 18:07:53,935 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 986 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:53,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 241 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:07:53,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2024-11-09 18:07:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 194. [2024-11-09 18:07:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.2487046632124352) internal successors, (241), 193 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 241 transitions. [2024-11-09 18:07:53,949 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 241 transitions. Word has length 80 [2024-11-09 18:07:53,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:53,949 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 241 transitions. [2024-11-09 18:07:53,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.387096774193548) internal successors, (167), 30 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 241 transitions. [2024-11-09 18:07:53,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-09 18:07:53,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:53,967 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 11, 11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:53,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 18:07:54,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:54,168 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:54,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash -685781887, now seen corresponding path program 2 times [2024-11-09 18:07:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:54,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279215243] [2024-11-09 18:07:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 747 proven. 363 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 18:07:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279215243] [2024-11-09 18:07:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279215243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324395565] [2024-11-09 18:07:54,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:07:54,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:54,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:54,889 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) [2024-11-09 18:07:54,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:07:55,088 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:07:55,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:55,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 18:07:55,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 18:07:55,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 18:07:56,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324395565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:56,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:56,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25, 25] total 61 [2024-11-09 18:07:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145600569] [2024-11-09 18:07:56,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:56,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-09 18:07:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-09 18:07:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=2388, Unknown=0, NotChecked=0, Total=3782 [2024-11-09 18:07:56,405 INFO L87 Difference]: Start difference. First operand 194 states and 241 transitions. Second operand has 62 states, 62 states have (on average 5.854838709677419) internal successors, (363), 61 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:58,105 INFO L93 Difference]: Finished difference Result 6215 states and 7679 transitions. [2024-11-09 18:07:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 18:07:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.854838709677419) internal successors, (363), 61 states have internal predecessors, (363), 0 states have call successors, (0), 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 [2024-11-09 18:07:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:58,121 INFO L225 Difference]: With dead ends: 6215 [2024-11-09 18:07:58,122 INFO L226 Difference]: Without dead ends: 6036 [2024-11-09 18:07:58,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2567, Invalid=4573, Unknown=0, NotChecked=0, Total=7140 [2024-11-09 18:07:58,126 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1868 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:58,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 524 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:07:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2024-11-09 18:07:58,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 1178. [2024-11-09 18:07:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1177 states have (on average 1.1724723874256584) internal successors, (1380), 1177 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1380 transitions. [2024-11-09 18:07:58,214 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1380 transitions. Word has length 152 [2024-11-09 18:07:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:58,214 INFO L471 AbstractCegarLoop]: Abstraction has 1178 states and 1380 transitions. [2024-11-09 18:07:58,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.854838709677419) internal successors, (363), 61 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1380 transitions. [2024-11-09 18:07:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-09 18:07:58,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:58,223 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 34, 23, 23, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:58,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:07:58,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:58,424 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:58,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:58,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1637757558, now seen corresponding path program 3 times [2024-11-09 18:07:58,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:58,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242861584] [2024-11-09 18:07:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:58,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6307 backedges. 1686 proven. 9 refuted. 0 times theorem prover too weak. 4612 trivial. 0 not checked. [2024-11-09 18:07:59,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:59,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242861584] [2024-11-09 18:07:59,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242861584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:59,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518104507] [2024-11-09 18:07:59,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:07:59,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:59,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:59,342 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) [2024-11-09 18:07:59,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:07:59,530 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 18:07:59,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:59,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 18:07:59,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:08:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6307 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6302 trivial. 0 not checked. [2024-11-09 18:08:00,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:08:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6307 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6302 trivial. 0 not checked. [2024-11-09 18:08:04,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518104507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:08:04,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:08:04,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 24 [2024-11-09 18:08:04,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240693184] [2024-11-09 18:08:04,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:08:04,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 18:08:04,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:08:04,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 18:08:04,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:08:04,108 INFO L87 Difference]: Start difference. First operand 1178 states and 1380 transitions. Second operand has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:08:04,752 INFO L93 Difference]: Finished difference Result 1548 states and 1850 transitions. [2024-11-09 18:08:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 18:08:04,754 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2024-11-09 18:08:04,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:08:04,756 INFO L225 Difference]: With dead ends: 1548 [2024-11-09 18:08:04,756 INFO L226 Difference]: Without dead ends: 397 [2024-11-09 18:08:04,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=1129, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 18:08:04,759 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 153 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:08:04,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 102 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:08:04,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-09 18:08:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 374. [2024-11-09 18:08:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.1474530831099197) internal successors, (428), 373 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 428 transitions. [2024-11-09 18:08:04,791 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 428 transitions. Word has length 296 [2024-11-09 18:08:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:08:04,792 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 428 transitions. [2024-11-09 18:08:04,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 428 transitions. [2024-11-09 18:08:04,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-09 18:08:04,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:08:04,795 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 23, 23, 23, 23, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:08:04,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:08:04,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:08:05,000 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:08:05,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:08:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash -705625023, now seen corresponding path program 4 times [2024-11-09 18:08:05,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:08:05,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563813113] [2024-11-09 18:08:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:08:05,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:08:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:08:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6387 backedges. 3219 proven. 1587 refuted. 0 times theorem prover too weak. 1581 trivial. 0 not checked. [2024-11-09 18:08:07,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:08:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563813113] [2024-11-09 18:08:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563813113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:08:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683462509] [2024-11-09 18:08:07,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:08:07,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:08:07,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:08:07,066 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) [2024-11-09 18:08:07,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:08:12,270 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:08:12,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:08:12,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 18:08:12,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:08:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6387 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 18:08:13,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:08:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6387 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 18:08:16,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683462509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:08:16,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:08:16,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 49, 49] total 121 [2024-11-09 18:08:16,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168277619] [2024-11-09 18:08:16,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:08:16,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-09 18:08:16,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:08:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-09 18:08:16,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5378, Invalid=9384, Unknown=0, NotChecked=0, Total=14762 [2024-11-09 18:08:16,070 INFO L87 Difference]: Start difference. First operand 374 states and 428 transitions. Second operand has 122 states, 122 states have (on average 5.926229508196721) internal successors, (723), 121 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:08:22,778 INFO L93 Difference]: Finished difference Result 5013 states and 5870 transitions. [2024-11-09 18:08:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-09 18:08:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 5.926229508196721) internal successors, (723), 121 states have internal predecessors, (723), 0 states have call successors, (0), 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 320 [2024-11-09 18:08:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:08:22,792 INFO L225 Difference]: With dead ends: 5013 [2024-11-09 18:08:22,793 INFO L226 Difference]: Without dead ends: 4786 [2024-11-09 18:08:22,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8857 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=10031, Invalid=18361, Unknown=0, NotChecked=0, Total=28392 [2024-11-09 18:08:22,798 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5938 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5938 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:08:22,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5938 Valid, 1033 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 18:08:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2024-11-09 18:08:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 710. [2024-11-09 18:08:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 1.1452750352609309) internal successors, (812), 709 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 812 transitions. [2024-11-09 18:08:22,869 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 812 transitions. Word has length 320 [2024-11-09 18:08:22,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:08:22,869 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 812 transitions. [2024-11-09 18:08:22,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 5.926229508196721) internal successors, (723), 121 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:22,870 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 812 transitions. [2024-11-09 18:08:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2024-11-09 18:08:22,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:08:22,876 INFO L215 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 47, 47, 47, 47, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:08:22,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 18:08:23,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:08:23,077 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:08:23,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:08:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash -71863423, now seen corresponding path program 5 times [2024-11-09 18:08:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:08:23,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650987832] [2024-11-09 18:08:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:08:23,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:08:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:08:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 26499 backedges. 13347 proven. 6627 refuted. 0 times theorem prover too weak. 6525 trivial. 0 not checked. [2024-11-09 18:08:29,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:08:29,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650987832] [2024-11-09 18:08:29,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650987832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:08:29,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670474261] [2024-11-09 18:08:29,529 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:08:29,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:08:29,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:08:29,531 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) [2024-11-09 18:08:29,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process