./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i -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 0f173a1e127c6e1033e5b4dd17ed93bd9e595663c9235b403a3de8ffd3ad4687 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:39:08,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:39:08,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:39:08,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:39:08,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:39:08,194 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:39:08,194 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:39:08,195 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:39:08,195 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:39:08,196 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:39:08,196 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:39:08,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:39:08,197 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:39:08,198 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:39:08,198 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:39:08,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:39:08,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:39:08,200 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:39:08,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:39:08,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:39:08,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:39:08,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:39:08,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:39:08,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:39:08,204 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:39:08,204 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:39:08,204 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:39:08,204 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:39:08,204 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:39:08,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:39:08,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:39:08,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:39:08,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:39:08,205 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:39:08,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:39:08,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:39:08,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:39:08,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:39:08,206 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:39:08,206 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:39:08,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:39:08,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:39:08,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f173a1e127c6e1033e5b4dd17ed93bd9e595663c9235b403a3de8ffd3ad4687 [2024-11-18 22:39:08,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:39:08,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:39:08,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:39:08,416 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:39:08,416 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:39:08,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i [2024-11-18 22:39:09,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:39:09,787 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:39:09,787 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i [2024-11-18 22:39:09,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20700b928/22ca87019f1445deb9a967831616d929/FLAG0a3f6eb0c [2024-11-18 22:39:09,805 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20700b928/22ca87019f1445deb9a967831616d929 [2024-11-18 22:39:09,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:39:09,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:39:09,810 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:39:09,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:39:09,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:39:09,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:39:09" (1/1) ... [2024-11-18 22:39:09,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1824b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:09, skipping insertion in model container [2024-11-18 22:39:09,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:39:09" (1/1) ... [2024-11-18 22:39:09,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:39:09,982 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i[916,929] [2024-11-18 22:39:10,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:39:10,102 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:39:10,111 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i[916,929] [2024-11-18 22:39:10,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:39:10,156 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:39:10,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10 WrapperNode [2024-11-18 22:39:10,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:39:10,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:39:10,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:39:10,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:39:10,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,201 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 281 [2024-11-18 22:39:10,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:39:10,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:39:10,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:39:10,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:39:10,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,245 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 22:39:10,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,260 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:39:10,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:39:10,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:39:10,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:39:10,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (1/1) ... [2024-11-18 22:39:10,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:39:10,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:39:10,313 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) [2024-11-18 22:39:10,315 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 [2024-11-18 22:39:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:39:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:39:10,351 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:39:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:39:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:39:10,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:39:10,429 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:39:10,430 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:39:10,872 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-18 22:39:10,872 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:39:10,887 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:39:10,888 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:39:10,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:39:10 BoogieIcfgContainer [2024-11-18 22:39:10,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:39:10,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:39:10,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:39:10,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:39:10,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:39:09" (1/3) ... [2024-11-18 22:39:10,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d53a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:39:10, skipping insertion in model container [2024-11-18 22:39:10,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:39:10" (2/3) ... [2024-11-18 22:39:10,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d53a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:39:10, skipping insertion in model container [2024-11-18 22:39:10,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:39:10" (3/3) ... [2024-11-18 22:39:10,897 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-88.i [2024-11-18 22:39:10,909 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:39:10,910 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:39:10,963 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:39:10,970 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;@6a2e8b41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:39:10,970 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:39:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 86 states have (on average 1.430232558139535) internal successors, (123), 87 states have internal predecessors, (123), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-18 22:39:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-18 22:39:10,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:10,987 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:10,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:10,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:10,991 INFO L85 PathProgramCache]: Analyzing trace with hash -98355189, now seen corresponding path program 1 times [2024-11-18 22:39:10,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:10,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511284609] [2024-11-18 22:39:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:10,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-11-18 22:39:11,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511284609] [2024-11-18 22:39:11,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511284609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:39:11,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722498632] [2024-11-18 22:39:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:11,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:39:11,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:39:11,333 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) [2024-11-18 22:39:11,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:39:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:11,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:39:11,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:39:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-11-18 22:39:11,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:39:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722498632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:11,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:39:11,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:39:11,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476627103] [2024-11-18 22:39:11,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:11,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:39:11,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:39:11,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:39:11,596 INFO L87 Difference]: Start difference. First operand has 117 states, 86 states have (on average 1.430232558139535) internal successors, (123), 87 states have internal predecessors, (123), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-18 22:39:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:11,631 INFO L93 Difference]: Finished difference Result 227 states and 380 transitions. [2024-11-18 22:39:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:39:11,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2024-11-18 22:39:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:11,645 INFO L225 Difference]: With dead ends: 227 [2024-11-18 22:39:11,645 INFO L226 Difference]: Without dead ends: 113 [2024-11-18 22:39:11,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:39:11,651 INFO L432 NwaCegarLoop]: 172 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, 172 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 [2024-11-18 22:39:11,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:39:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-18 22:39:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-18 22:39:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 83 states have internal predecessors, (116), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-18 22:39:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 172 transitions. [2024-11-18 22:39:11,696 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 172 transitions. Word has length 191 [2024-11-18 22:39:11,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:11,696 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 172 transitions. [2024-11-18 22:39:11,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-18 22:39:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 172 transitions. [2024-11-18 22:39:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-18 22:39:11,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:11,699 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:11,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 22:39:11,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 22:39:11,900 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:11,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:11,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1603606915, now seen corresponding path program 1 times [2024-11-18 22:39:11,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:11,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100545820] [2024-11-18 22:39:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:11,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:12,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100545820] [2024-11-18 22:39:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100545820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:12,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:39:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184436452] [2024-11-18 22:39:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:12,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:39:12,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:12,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:39:12,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:39:12,402 INFO L87 Difference]: Start difference. First operand 113 states and 172 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:12,571 INFO L93 Difference]: Finished difference Result 373 states and 567 transitions. [2024-11-18 22:39:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:39:12,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2024-11-18 22:39:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:12,575 INFO L225 Difference]: With dead ends: 373 [2024-11-18 22:39:12,575 INFO L226 Difference]: Without dead ends: 263 [2024-11-18 22:39:12,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:39:12,580 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 250 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:12,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 484 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:39:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-18 22:39:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 217. [2024-11-18 22:39:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 158 states have (on average 1.3734177215189873) internal successors, (217), 158 states have internal predecessors, (217), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 22:39:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 329 transitions. [2024-11-18 22:39:12,620 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 329 transitions. Word has length 191 [2024-11-18 22:39:12,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:12,621 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 329 transitions. [2024-11-18 22:39:12,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 329 transitions. [2024-11-18 22:39:12,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-18 22:39:12,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:12,627 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:12,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:39:12,628 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:12,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:12,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1586446966, now seen corresponding path program 1 times [2024-11-18 22:39:12,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:12,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516399050] [2024-11-18 22:39:12,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:12,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:12,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:12,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516399050] [2024-11-18 22:39:12,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516399050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:12,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:12,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:39:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552570014] [2024-11-18 22:39:12,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:12,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:39:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:12,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:39:12,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:39:12,898 INFO L87 Difference]: Start difference. First operand 217 states and 329 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-18 22:39:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:13,133 INFO L93 Difference]: Finished difference Result 580 states and 878 transitions. [2024-11-18 22:39:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:39:13,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 192 [2024-11-18 22:39:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:13,138 INFO L225 Difference]: With dead ends: 580 [2024-11-18 22:39:13,140 INFO L226 Difference]: Without dead ends: 366 [2024-11-18 22:39:13,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:39:13,142 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 255 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:13,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 574 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:39:13,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-18 22:39:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 272. [2024-11-18 22:39:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 184 states have (on average 1.3315217391304348) internal successors, (245), 184 states have internal predecessors, (245), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 22:39:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 413 transitions. [2024-11-18 22:39:13,180 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 413 transitions. Word has length 192 [2024-11-18 22:39:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:13,181 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 413 transitions. [2024-11-18 22:39:13,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-18 22:39:13,181 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 413 transitions. [2024-11-18 22:39:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-18 22:39:13,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:13,183 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:13,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:39:13,183 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:13,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2095920056, now seen corresponding path program 1 times [2024-11-18 22:39:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:13,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185091748] [2024-11-18 22:39:13,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:13,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:13,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:13,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185091748] [2024-11-18 22:39:13,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185091748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:13,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:13,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:39:13,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227568072] [2024-11-18 22:39:13,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:13,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:39:13,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:39:13,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:39:13,522 INFO L87 Difference]: Start difference. First operand 272 states and 413 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:13,970 INFO L93 Difference]: Finished difference Result 580 states and 877 transitions. [2024-11-18 22:39:13,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:39:13,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2024-11-18 22:39:13,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:13,973 INFO L225 Difference]: With dead ends: 580 [2024-11-18 22:39:13,973 INFO L226 Difference]: Without dead ends: 366 [2024-11-18 22:39:13,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:39:13,978 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 106 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:13,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 544 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:39:13,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-18 22:39:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 282. [2024-11-18 22:39:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 194 states have (on average 1.3350515463917525) internal successors, (259), 194 states have internal predecessors, (259), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 22:39:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 427 transitions. [2024-11-18 22:39:14,004 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 427 transitions. Word has length 192 [2024-11-18 22:39:14,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:14,005 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 427 transitions. [2024-11-18 22:39:14,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 427 transitions. [2024-11-18 22:39:14,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-18 22:39:14,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:14,007 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:14,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:39:14,008 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:14,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1776345414, now seen corresponding path program 1 times [2024-11-18 22:39:14,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:14,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550075760] [2024-11-18 22:39:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:14,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:14,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:14,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550075760] [2024-11-18 22:39:14,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550075760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:14,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:14,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:39:14,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876899486] [2024-11-18 22:39:14,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:14,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:39:14,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:39:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:39:14,637 INFO L87 Difference]: Start difference. First operand 282 states and 427 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:15,503 INFO L93 Difference]: Finished difference Result 953 states and 1446 transitions. [2024-11-18 22:39:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:39:15,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2024-11-18 22:39:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:15,509 INFO L225 Difference]: With dead ends: 953 [2024-11-18 22:39:15,510 INFO L226 Difference]: Without dead ends: 739 [2024-11-18 22:39:15,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:39:15,511 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 412 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:15,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 804 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 22:39:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2024-11-18 22:39:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 406. [2024-11-18 22:39:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 289 states have (on average 1.3633217993079585) internal successors, (394), 289 states have internal predecessors, (394), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 22:39:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 618 transitions. [2024-11-18 22:39:15,593 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 618 transitions. Word has length 192 [2024-11-18 22:39:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:15,594 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 618 transitions. [2024-11-18 22:39:15,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 618 transitions. [2024-11-18 22:39:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-18 22:39:15,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:15,597 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:15,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:39:15,597 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:15,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1238758204, now seen corresponding path program 1 times [2024-11-18 22:39:15,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:15,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129228414] [2024-11-18 22:39:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:15,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:15,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:15,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129228414] [2024-11-18 22:39:15,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129228414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:15,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:15,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:39:15,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304664096] [2024-11-18 22:39:15,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:15,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:39:15,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:15,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:39:15,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:39:15,918 INFO L87 Difference]: Start difference. First operand 406 states and 618 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:16,547 INFO L93 Difference]: Finished difference Result 1296 states and 1977 transitions. [2024-11-18 22:39:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:39:16,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2024-11-18 22:39:16,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:16,577 INFO L225 Difference]: With dead ends: 1296 [2024-11-18 22:39:16,577 INFO L226 Difference]: Without dead ends: 958 [2024-11-18 22:39:16,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:39:16,579 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 603 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:16,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 727 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 22:39:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2024-11-18 22:39:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 532. [2024-11-18 22:39:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 386 states have (on average 1.383419689119171) internal successors, (534), 386 states have internal predecessors, (534), 140 states have call successors, (140), 5 states have call predecessors, (140), 5 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-18 22:39:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 814 transitions. [2024-11-18 22:39:16,649 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 814 transitions. Word has length 192 [2024-11-18 22:39:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:16,650 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 814 transitions. [2024-11-18 22:39:16,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 814 transitions. [2024-11-18 22:39:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-18 22:39:16,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:16,651 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:16,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:39:16,651 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:16,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash 598736577, now seen corresponding path program 1 times [2024-11-18 22:39:16,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:16,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146799932] [2024-11-18 22:39:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:16,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:16,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:16,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146799932] [2024-11-18 22:39:16,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146799932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:16,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:16,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:39:16,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361245118] [2024-11-18 22:39:16,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:16,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:39:16,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:39:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:39:16,818 INFO L87 Difference]: Start difference. First operand 532 states and 814 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:17,148 INFO L93 Difference]: Finished difference Result 1442 states and 2210 transitions. [2024-11-18 22:39:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:39:17,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 193 [2024-11-18 22:39:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:17,153 INFO L225 Difference]: With dead ends: 1442 [2024-11-18 22:39:17,153 INFO L226 Difference]: Without dead ends: 978 [2024-11-18 22:39:17,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:39:17,155 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 166 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:17,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 455 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:39:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-18 22:39:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 976. [2024-11-18 22:39:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 714 states have (on average 1.3753501400560224) internal successors, (982), 714 states have internal predecessors, (982), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-18 22:39:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1486 transitions. [2024-11-18 22:39:17,271 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1486 transitions. Word has length 193 [2024-11-18 22:39:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:17,272 INFO L471 AbstractCegarLoop]: Abstraction has 976 states and 1486 transitions. [2024-11-18 22:39:17,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1486 transitions. [2024-11-18 22:39:17,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-18 22:39:17,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:17,274 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:17,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 22:39:17,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:17,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash 164625139, now seen corresponding path program 1 times [2024-11-18 22:39:17,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:17,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689141770] [2024-11-18 22:39:17,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:17,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:17,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:17,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689141770] [2024-11-18 22:39:17,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689141770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:17,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:17,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:39:17,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123689141] [2024-11-18 22:39:17,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:17,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:39:17,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:39:17,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:39:17,386 INFO L87 Difference]: Start difference. First operand 976 states and 1486 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:17,525 INFO L93 Difference]: Finished difference Result 1962 states and 2993 transitions. [2024-11-18 22:39:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:39:17,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2024-11-18 22:39:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:17,531 INFO L225 Difference]: With dead ends: 1962 [2024-11-18 22:39:17,531 INFO L226 Difference]: Without dead ends: 1056 [2024-11-18 22:39:17,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:39:17,535 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 19 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:17,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 293 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:39:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2024-11-18 22:39:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 976. [2024-11-18 22:39:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 714 states have (on average 1.3697478991596639) internal successors, (978), 714 states have internal predecessors, (978), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-18 22:39:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1482 transitions. [2024-11-18 22:39:17,644 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1482 transitions. Word has length 194 [2024-11-18 22:39:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:17,645 INFO L471 AbstractCegarLoop]: Abstraction has 976 states and 1482 transitions. [2024-11-18 22:39:17,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1482 transitions. [2024-11-18 22:39:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-18 22:39:17,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:17,647 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:17,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 22:39:17,647 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:17,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:17,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1588417456, now seen corresponding path program 1 times [2024-11-18 22:39:17,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:17,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491355738] [2024-11-18 22:39:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:17,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2024-11-18 22:39:18,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:18,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491355738] [2024-11-18 22:39:18,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491355738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:39:18,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945998034] [2024-11-18 22:39:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:18,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:39:18,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:39:18,649 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) [2024-11-18 22:39:18,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:39:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:18,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 22:39:18,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:39:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:19,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:39:19,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945998034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:19,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:39:19,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2024-11-18 22:39:19,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233941466] [2024-11-18 22:39:19,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:19,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 22:39:19,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:19,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 22:39:19,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-18 22:39:19,530 INFO L87 Difference]: Start difference. First operand 976 states and 1482 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:20,304 INFO L93 Difference]: Finished difference Result 2298 states and 3466 transitions. [2024-11-18 22:39:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:39:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2024-11-18 22:39:20,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:20,310 INFO L225 Difference]: With dead ends: 2298 [2024-11-18 22:39:20,311 INFO L226 Difference]: Without dead ends: 1392 [2024-11-18 22:39:20,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-18 22:39:20,314 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 331 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:20,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 895 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:39:20,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2024-11-18 22:39:20,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1062. [2024-11-18 22:39:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 800 states have (on average 1.385) internal successors, (1108), 800 states have internal predecessors, (1108), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-18 22:39:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1612 transitions. [2024-11-18 22:39:20,429 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1612 transitions. Word has length 195 [2024-11-18 22:39:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:20,430 INFO L471 AbstractCegarLoop]: Abstraction has 1062 states and 1612 transitions. [2024-11-18 22:39:20,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1612 transitions. [2024-11-18 22:39:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-18 22:39:20,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:20,433 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:20,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 22:39:20,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-18 22:39:20,635 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:20,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1031324183, now seen corresponding path program 1 times [2024-11-18 22:39:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:20,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632415913] [2024-11-18 22:39:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:20,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:21,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632415913] [2024-11-18 22:39:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632415913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:21,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:39:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727546897] [2024-11-18 22:39:21,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:21,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:39:21,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:39:21,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:39:21,281 INFO L87 Difference]: Start difference. First operand 1062 states and 1612 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:22,139 INFO L93 Difference]: Finished difference Result 2409 states and 3654 transitions. [2024-11-18 22:39:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:39:22,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2024-11-18 22:39:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:22,148 INFO L225 Difference]: With dead ends: 2409 [2024-11-18 22:39:22,148 INFO L226 Difference]: Without dead ends: 1417 [2024-11-18 22:39:22,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:39:22,151 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 307 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:22,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1120 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 22:39:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-18 22:39:22,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1114. [2024-11-18 22:39:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 852 states have (on average 1.3849765258215962) internal successors, (1180), 852 states have internal predecessors, (1180), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-18 22:39:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1684 transitions. [2024-11-18 22:39:22,257 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1684 transitions. Word has length 195 [2024-11-18 22:39:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:22,258 INFO L471 AbstractCegarLoop]: Abstraction has 1114 states and 1684 transitions. [2024-11-18 22:39:22,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1684 transitions. [2024-11-18 22:39:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-18 22:39:22,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:22,260 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:22,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 22:39:22,261 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:22,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1413542774, now seen corresponding path program 1 times [2024-11-18 22:39:22,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:22,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421795650] [2024-11-18 22:39:22,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:22,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2024-11-18 22:39:22,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:22,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421795650] [2024-11-18 22:39:22,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421795650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:39:22,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829430372] [2024-11-18 22:39:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:22,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:39:22,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:39:22,823 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) [2024-11-18 22:39:22,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:39:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:22,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 22:39:22,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:39:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:23,004 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:39:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829430372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:23,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:39:23,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-18 22:39:23,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982654121] [2024-11-18 22:39:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:23,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:39:23,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:23,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:39:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:39:23,006 INFO L87 Difference]: Start difference. First operand 1114 states and 1684 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:23,411 INFO L93 Difference]: Finished difference Result 2948 states and 4467 transitions. [2024-11-18 22:39:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:39:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2024-11-18 22:39:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:23,421 INFO L225 Difference]: With dead ends: 2948 [2024-11-18 22:39:23,421 INFO L226 Difference]: Without dead ends: 1900 [2024-11-18 22:39:23,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:39:23,424 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 216 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:23,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1130 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:39:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2024-11-18 22:39:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1628. [2024-11-18 22:39:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1250 states have (on average 1.3648) internal successors, (1706), 1250 states have internal predecessors, (1706), 364 states have call successors, (364), 13 states have call predecessors, (364), 13 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2024-11-18 22:39:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2434 transitions. [2024-11-18 22:39:23,603 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2434 transitions. Word has length 195 [2024-11-18 22:39:23,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:23,604 INFO L471 AbstractCegarLoop]: Abstraction has 1628 states and 2434 transitions. [2024-11-18 22:39:23,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2434 transitions. [2024-11-18 22:39:23,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-18 22:39:23,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:23,607 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:23,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 22:39:23,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:39:23,811 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:23,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1689128013, now seen corresponding path program 1 times [2024-11-18 22:39:23,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:23,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139420205] [2024-11-18 22:39:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:23,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:24,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:24,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139420205] [2024-11-18 22:39:24,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139420205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:24,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:24,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:39:24,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585433051] [2024-11-18 22:39:24,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:24,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:39:24,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:24,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:39:24,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:39:24,060 INFO L87 Difference]: Start difference. First operand 1628 states and 2434 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:24,771 INFO L93 Difference]: Finished difference Result 4678 states and 7020 transitions. [2024-11-18 22:39:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:39:24,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 196 [2024-11-18 22:39:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:24,784 INFO L225 Difference]: With dead ends: 4678 [2024-11-18 22:39:24,784 INFO L226 Difference]: Without dead ends: 3120 [2024-11-18 22:39:24,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:39:24,788 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 285 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:24,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 789 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:39:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2024-11-18 22:39:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2278. [2024-11-18 22:39:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1784 states have (on average 1.3649103139013452) internal successors, (2435), 1784 states have internal predecessors, (2435), 476 states have call successors, (476), 17 states have call predecessors, (476), 17 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2024-11-18 22:39:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3387 transitions. [2024-11-18 22:39:25,036 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3387 transitions. Word has length 196 [2024-11-18 22:39:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:25,036 INFO L471 AbstractCegarLoop]: Abstraction has 2278 states and 3387 transitions. [2024-11-18 22:39:25,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:25,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3387 transitions. [2024-11-18 22:39:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-18 22:39:25,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:25,042 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:25,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 22:39:25,042 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:25,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash -305016693, now seen corresponding path program 1 times [2024-11-18 22:39:25,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:25,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63170959] [2024-11-18 22:39:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:25,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:25,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:25,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63170959] [2024-11-18 22:39:25,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63170959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:25,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 22:39:25,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926026245] [2024-11-18 22:39:25,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:25,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 22:39:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:25,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 22:39:25,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:39:25,433 INFO L87 Difference]: Start difference. First operand 2278 states and 3387 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:26,702 INFO L93 Difference]: Finished difference Result 5127 states and 7627 transitions. [2024-11-18 22:39:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 22:39:26,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 196 [2024-11-18 22:39:26,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:26,715 INFO L225 Difference]: With dead ends: 5127 [2024-11-18 22:39:26,716 INFO L226 Difference]: Without dead ends: 2919 [2024-11-18 22:39:26,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:39:26,721 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 425 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:26,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1091 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 22:39:26,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2024-11-18 22:39:26,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2304. [2024-11-18 22:39:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 1810 states have (on average 1.3629834254143647) internal successors, (2467), 1810 states have internal predecessors, (2467), 476 states have call successors, (476), 17 states have call predecessors, (476), 17 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2024-11-18 22:39:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3419 transitions. [2024-11-18 22:39:27,011 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3419 transitions. Word has length 196 [2024-11-18 22:39:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:27,011 INFO L471 AbstractCegarLoop]: Abstraction has 2304 states and 3419 transitions. [2024-11-18 22:39:27,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3419 transitions. [2024-11-18 22:39:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-18 22:39:27,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:27,013 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:27,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 22:39:27,013 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:27,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1213630660, now seen corresponding path program 1 times [2024-11-18 22:39:27,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:27,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988848786] [2024-11-18 22:39:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:27,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2024-11-18 22:39:27,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:27,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988848786] [2024-11-18 22:39:27,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988848786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:39:27,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779585769] [2024-11-18 22:39:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:27,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:39:27,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:39:27,405 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) [2024-11-18 22:39:27,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 22:39:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:27,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 22:39:27,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:39:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 283 proven. 3 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2024-11-18 22:39:27,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:39:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 6 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2024-11-18 22:39:27,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779585769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:39:27,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:39:27,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2024-11-18 22:39:27,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172776329] [2024-11-18 22:39:27,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:39:27,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 22:39:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 22:39:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-18 22:39:27,898 INFO L87 Difference]: Start difference. First operand 2304 states and 3419 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-18 22:39:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:28,438 INFO L93 Difference]: Finished difference Result 3612 states and 5256 transitions. [2024-11-18 22:39:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 22:39:28,439 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 196 [2024-11-18 22:39:28,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:28,446 INFO L225 Difference]: With dead ends: 3612 [2024-11-18 22:39:28,446 INFO L226 Difference]: Without dead ends: 1378 [2024-11-18 22:39:28,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=514, Unknown=0, NotChecked=0, Total=756 [2024-11-18 22:39:28,450 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 588 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:28,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 431 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 22:39:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2024-11-18 22:39:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1304. [2024-11-18 22:39:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1024 states have (on average 1.3173828125) internal successors, (1349), 1024 states have internal predecessors, (1349), 252 states have call successors, (252), 27 states have call predecessors, (252), 27 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-18 22:39:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1853 transitions. [2024-11-18 22:39:28,626 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1853 transitions. Word has length 196 [2024-11-18 22:39:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:28,627 INFO L471 AbstractCegarLoop]: Abstraction has 1304 states and 1853 transitions. [2024-11-18 22:39:28,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-18 22:39:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1853 transitions. [2024-11-18 22:39:28,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-18 22:39:28,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:28,628 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:28,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 22:39:28,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:39:28,829 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:28,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:28,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1260422843, now seen corresponding path program 1 times [2024-11-18 22:39:28,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:28,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450715888] [2024-11-18 22:39:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:28,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:29,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:29,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450715888] [2024-11-18 22:39:29,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450715888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:29,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:29,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:39:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551434220] [2024-11-18 22:39:29,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:29,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:39:29,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:39:29,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:39:29,217 INFO L87 Difference]: Start difference. First operand 1304 states and 1853 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:29,972 INFO L93 Difference]: Finished difference Result 2740 states and 3884 transitions. [2024-11-18 22:39:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:39:29,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 197 [2024-11-18 22:39:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:29,979 INFO L225 Difference]: With dead ends: 2740 [2024-11-18 22:39:29,979 INFO L226 Difference]: Without dead ends: 1514 [2024-11-18 22:39:29,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:39:29,981 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 281 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:29,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 617 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 22:39:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2024-11-18 22:39:30,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1322. [2024-11-18 22:39:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1042 states have (on average 1.3147792706333974) internal successors, (1370), 1042 states have internal predecessors, (1370), 252 states have call successors, (252), 27 states have call predecessors, (252), 27 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-18 22:39:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1874 transitions. [2024-11-18 22:39:30,171 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1874 transitions. Word has length 197 [2024-11-18 22:39:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:30,171 INFO L471 AbstractCegarLoop]: Abstraction has 1322 states and 1874 transitions. [2024-11-18 22:39:30,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1874 transitions. [2024-11-18 22:39:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-18 22:39:30,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:30,173 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:30,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 22:39:30,173 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:30,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:30,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1345600711, now seen corresponding path program 1 times [2024-11-18 22:39:30,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:30,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383411472] [2024-11-18 22:39:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:30,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-18 22:39:30,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:39:30,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383411472] [2024-11-18 22:39:30,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383411472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:39:30,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:39:30,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 22:39:30,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957862747] [2024-11-18 22:39:30,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:39:30,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 22:39:30,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:39:30,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 22:39:30,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:39:30,504 INFO L87 Difference]: Start difference. First operand 1322 states and 1874 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:39:31,450 INFO L93 Difference]: Finished difference Result 2758 states and 3900 transitions. [2024-11-18 22:39:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 22:39:31,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 197 [2024-11-18 22:39:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:39:31,458 INFO L225 Difference]: With dead ends: 2758 [2024-11-18 22:39:31,458 INFO L226 Difference]: Without dead ends: 1514 [2024-11-18 22:39:31,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:39:31,461 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 347 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 22:39:31,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 673 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 22:39:31,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2024-11-18 22:39:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1304. [2024-11-18 22:39:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1024 states have (on average 1.310546875) internal successors, (1342), 1024 states have internal predecessors, (1342), 252 states have call successors, (252), 27 states have call predecessors, (252), 27 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-18 22:39:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1846 transitions. [2024-11-18 22:39:31,647 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1846 transitions. Word has length 197 [2024-11-18 22:39:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:39:31,647 INFO L471 AbstractCegarLoop]: Abstraction has 1304 states and 1846 transitions. [2024-11-18 22:39:31,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 22:39:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1846 transitions. [2024-11-18 22:39:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-18 22:39:31,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:39:31,649 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:39:31,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 22:39:31,649 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:39:31,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:39:31,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1041172107, now seen corresponding path program 1 times [2024-11-18 22:39:31,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:39:31,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739076574] [2024-11-18 22:39:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:31,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:39:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 22:39:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231633382] [2024-11-18 22:39:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:39:31,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:39:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:39:31,726 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) [2024-11-18 22:39:31,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 22:39:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:39:32,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-18 22:39:32,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:39:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 947 proven. 180 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-18 22:39:34,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:39:56,022 WARN L286 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 30 DAG size of output: 26 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)