./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.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 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 16:42:01,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 16:42:01,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 16:42:01,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 16:42:01,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 16:42:01,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 16:42:01,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 16:42:01,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 16:42:01,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 16:42:01,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 16:42:01,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 16:42:01,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 16:42:01,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 16:42:01,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 16:42:01,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 16:42:01,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 16:42:01,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 16:42:01,230 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 16:42:01,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 16:42:01,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 16:42:01,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 16:42:01,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 16:42:01,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 16:42:01,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 16:42:01,232 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 16:42:01,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 16:42:01,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 16:42:01,237 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 16:42:01,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 16:42:01,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 16:42:01,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 16:42:01,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 16:42:01,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:42:01,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 16:42:01,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 16:42:01,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 16:42:01,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 16:42:01,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 16:42:01,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 16:42:01,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 16:42:01,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 16:42:01,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 16:42:01,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 [2024-11-19 16:42:01,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 16:42:01,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 16:42:01,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 16:42:01,512 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 16:42:01,512 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 16:42:01,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2024-11-19 16:42:02,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 16:42:03,121 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 16:42:03,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2024-11-19 16:42:03,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354300226/4312e23b720b4fc1909a0961ea6569fb/FLAGbba0f7407 [2024-11-19 16:42:03,144 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354300226/4312e23b720b4fc1909a0961ea6569fb [2024-11-19 16:42:03,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 16:42:03,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 16:42:03,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 16:42:03,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 16:42:03,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 16:42:03,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d8f9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03, skipping insertion in model container [2024-11-19 16:42:03,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,175 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 16:42:03,337 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i[815,828] [2024-11-19 16:42:03,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:42:03,372 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 16:42:03,385 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i[815,828] [2024-11-19 16:42:03,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:42:03,415 INFO L204 MainTranslator]: Completed translation [2024-11-19 16:42:03,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03 WrapperNode [2024-11-19 16:42:03,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 16:42:03,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 16:42:03,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 16:42:03,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 16:42:03,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,460 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-11-19 16:42:03,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 16:42:03,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 16:42:03,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 16:42:03,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 16:42:03,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,501 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 4, 2, 3]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 2]. [2024-11-19 16:42:03,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 16:42:03,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 16:42:03,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 16:42:03,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 16:42:03,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (1/1) ... [2024-11-19 16:42:03,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:42:03,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:42:03,557 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) [2024-11-19 16:42:03,560 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 [2024-11-19 16:42:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 16:42:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 16:42:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 16:42:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 16:42:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 16:42:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 16:42:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 16:42:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 16:42:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 16:42:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 16:42:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 16:42:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 16:42:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 16:42:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 16:42:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 16:42:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 16:42:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 16:42:03,789 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 16:42:03,791 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 16:42:03,931 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-19 16:42:03,931 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 16:42:03,943 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 16:42:03,946 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 16:42:03,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:42:03 BoogieIcfgContainer [2024-11-19 16:42:03,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 16:42:03,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 16:42:03,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 16:42:03,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 16:42:03,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:42:03" (1/3) ... [2024-11-19 16:42:03,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284ed0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:42:03, skipping insertion in model container [2024-11-19 16:42:03,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:03" (2/3) ... [2024-11-19 16:42:03,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284ed0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:42:03, skipping insertion in model container [2024-11-19 16:42:03,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:42:03" (3/3) ... [2024-11-19 16:42:03,956 INFO L112 eAbstractionObserver]: Analyzing ICFG array_single_elem_init.i [2024-11-19 16:42:03,970 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 16:42:03,970 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 16:42:04,023 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 16:42:04,029 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;@3a7bd37c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 16:42:04,030 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 16:42:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 16:42:04,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:42:04,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:42:04,038 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:42:04,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:42:04,042 INFO L85 PathProgramCache]: Analyzing trace with hash 975548362, now seen corresponding path program 1 times [2024-11-19 16:42:04,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:42:04,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766903022] [2024-11-19 16:42:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:04,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:42:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:42:04,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:42:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766903022] [2024-11-19 16:42:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766903022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:42:04,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:42:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 16:42:04,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743409214] [2024-11-19 16:42:04,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:42:04,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 16:42:04,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:42:04,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 16:42:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:42:04,225 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:42:04,236 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-11-19 16:42:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 16:42:04,238 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 16:42:04,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:42:04,243 INFO L225 Difference]: With dead ends: 33 [2024-11-19 16:42:04,243 INFO L226 Difference]: Without dead ends: 17 [2024-11-19 16:42:04,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:42:04,248 INFO L432 NwaCegarLoop]: 26 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, 26 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 [2024-11-19 16:42:04,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:42:04,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-19 16:42:04,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-19 16:42:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-19 16:42:04,279 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2024-11-19 16:42:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:42:04,279 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-19 16:42:04,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-19 16:42:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 16:42:04,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:42:04,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:42:04,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 16:42:04,281 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:42:04,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:42:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 231190436, now seen corresponding path program 1 times [2024-11-19 16:42:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:42:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904902966] [2024-11-19 16:42:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:04,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:42:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:42:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:42:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904902966] [2024-11-19 16:42:04,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904902966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:42:04,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:42:04,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 16:42:04,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497965525] [2024-11-19 16:42:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:42:04,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:42:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:42:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:42:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:42:04,412 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:42:04,475 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-19 16:42:04,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:42:04,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 16:42:04,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:42:04,477 INFO L225 Difference]: With dead ends: 35 [2024-11-19 16:42:04,477 INFO L226 Difference]: Without dead ends: 27 [2024-11-19 16:42:04,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:42:04,478 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:42:04,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:42:04,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-19 16:42:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2024-11-19 16:42:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-19 16:42:04,483 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 8 [2024-11-19 16:42:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:42:04,484 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-19 16:42:04,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-19 16:42:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 16:42:04,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:42:04,485 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:42:04,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 16:42:04,485 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:42:04,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:42:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash -366620444, now seen corresponding path program 1 times [2024-11-19 16:42:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:42:04,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707278532] [2024-11-19 16:42:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:04,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:42:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:42:04,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:42:04,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707278532] [2024-11-19 16:42:04,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707278532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:42:04,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:42:04,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 16:42:04,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540068180] [2024-11-19 16:42:04,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:42:04,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 16:42:04,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:42:04,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 16:42:04,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 16:42:04,755 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:42:04,826 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-11-19 16:42:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 16:42:04,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 16:42:04,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:42:04,828 INFO L225 Difference]: With dead ends: 42 [2024-11-19 16:42:04,828 INFO L226 Difference]: Without dead ends: 25 [2024-11-19 16:42:04,829 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 [2024-11-19 16:42:04,830 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:42:04,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 44 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:42:04,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-19 16:42:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-19 16:42:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-19 16:42:04,840 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2024-11-19 16:42:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:42:04,840 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-19 16:42:04,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:04,841 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-19 16:42:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 16:42:04,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:42:04,841 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:42:04,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 16:42:04,842 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:42:04,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:42:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1377737694, now seen corresponding path program 1 times [2024-11-19 16:42:04,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:42:04,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18348281] [2024-11-19 16:42:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:04,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:42:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:42:04,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:42:04,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18348281] [2024-11-19 16:42:04,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18348281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:42:04,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395124817] [2024-11-19 16:42:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:04,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:04,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:42:04,949 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) [2024-11-19 16:42:04,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 16:42:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:05,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 16:42:05,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:42:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:42:05,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:42:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:42:05,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395124817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:42:05,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:42:05,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 16:42:05,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555911882] [2024-11-19 16:42:05,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:42:05,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 16:42:05,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:42:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 16:42:05,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 16:42:05,136 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:42:05,240 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2024-11-19 16:42:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 16:42:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 16:42:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:42:05,242 INFO L225 Difference]: With dead ends: 67 [2024-11-19 16:42:05,242 INFO L226 Difference]: Without dead ends: 57 [2024-11-19 16:42:05,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 16:42:05,243 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:42:05,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 31 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:42:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-19 16:42:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2024-11-19 16:42:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 51 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2024-11-19 16:42:05,254 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 17 [2024-11-19 16:42:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:42:05,256 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2024-11-19 16:42:05,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:05,256 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2024-11-19 16:42:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 16:42:05,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:42:05,257 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:42:05,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 16:42:05,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:05,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:42:05,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:42:05,461 INFO L85 PathProgramCache]: Analyzing trace with hash -912381076, now seen corresponding path program 2 times [2024-11-19 16:42:05,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:42:05,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880583998] [2024-11-19 16:42:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:05,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:42:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 16:42:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:42:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880583998] [2024-11-19 16:42:05,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880583998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:42:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175459501] [2024-11-19 16:42:05,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:42:05,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:05,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:42:05,666 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) [2024-11-19 16:42:05,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 16:42:05,732 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:42:05,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:42:05,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 16:42:05,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:42:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 16:42:05,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:42:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 16:42:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175459501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:42:05,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:42:05,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 16:42:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74609526] [2024-11-19 16:42:05,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:42:05,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 16:42:05,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:42:05,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 16:42:05,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 16:42:05,874 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:42:06,073 INFO L93 Difference]: Finished difference Result 142 states and 188 transitions. [2024-11-19 16:42:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 16:42:06,074 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-19 16:42:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:42:06,076 INFO L225 Difference]: With dead ends: 142 [2024-11-19 16:42:06,076 INFO L226 Difference]: Without dead ends: 129 [2024-11-19 16:42:06,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 16:42:06,078 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 155 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 16:42:06,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 56 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 16:42:06,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-19 16:42:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2024-11-19 16:42:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 114 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 147 transitions. [2024-11-19 16:42:06,096 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 147 transitions. Word has length 38 [2024-11-19 16:42:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:42:06,096 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 147 transitions. [2024-11-19 16:42:06,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 147 transitions. [2024-11-19 16:42:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-19 16:42:06,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:42:06,099 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:42:06,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 16:42:06,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:06,304 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:42:06,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:42:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 677681824, now seen corresponding path program 3 times [2024-11-19 16:42:06,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:42:06,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046533211] [2024-11-19 16:42:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:42:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-19 16:42:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:42:06,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046533211] [2024-11-19 16:42:06,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046533211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:42:06,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382366531] [2024-11-19 16:42:06,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:42:06,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:06,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:42:06,750 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) [2024-11-19 16:42:06,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 16:42:06,867 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 16:42:06,867 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:42:06,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 16:42:06,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:42:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-19 16:42:06,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:42:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-19 16:42:07,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382366531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:42:07,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:42:07,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2024-11-19 16:42:07,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897598855] [2024-11-19 16:42:07,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:42:07,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 16:42:07,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:42:07,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 16:42:07,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2024-11-19 16:42:07,082 INFO L87 Difference]: Start difference. First operand 115 states and 147 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:07,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:42:07,374 INFO L93 Difference]: Finished difference Result 245 states and 321 transitions. [2024-11-19 16:42:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 16:42:07,375 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-19 16:42:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:42:07,378 INFO L225 Difference]: With dead ends: 245 [2024-11-19 16:42:07,379 INFO L226 Difference]: Without dead ends: 223 [2024-11-19 16:42:07,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2024-11-19 16:42:07,382 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 255 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 16:42:07,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 78 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 16:42:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-19 16:42:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 214. [2024-11-19 16:42:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.2535211267605635) internal successors, (267), 213 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 267 transitions. [2024-11-19 16:42:07,409 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 267 transitions. Word has length 83 [2024-11-19 16:42:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:42:07,410 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 267 transitions. [2024-11-19 16:42:07,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 267 transitions. [2024-11-19 16:42:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-19 16:42:07,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:42:07,420 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:42:07,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 16:42:07,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:07,621 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:42:07,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:42:07,621 INFO L85 PathProgramCache]: Analyzing trace with hash -178981630, now seen corresponding path program 4 times [2024-11-19 16:42:07,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:42:07,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733805867] [2024-11-19 16:42:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:07,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:42:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 833 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-19 16:42:08,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:42:08,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733805867] [2024-11-19 16:42:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733805867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:42:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317019830] [2024-11-19 16:42:08,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 16:42:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:08,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:42:08,269 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) [2024-11-19 16:42:08,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 16:42:08,394 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 16:42:08,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:42:08,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 16:42:08,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:42:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 833 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-19 16:42:08,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:42:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 833 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-19 16:42:09,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317019830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:42:09,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:42:09,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2024-11-19 16:42:09,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010835712] [2024-11-19 16:42:09,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:42:09,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-19 16:42:09,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:42:09,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-19 16:42:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 16:42:09,215 INFO L87 Difference]: Start difference. First operand 214 states and 267 transitions. Second operand has 39 states, 39 states have (on average 5.717948717948718) internal successors, (223), 39 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:42:09,827 INFO L93 Difference]: Finished difference Result 499 states and 647 transitions. [2024-11-19 16:42:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-19 16:42:09,828 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.717948717948718) internal successors, (223), 39 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-19 16:42:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:42:09,834 INFO L225 Difference]: With dead ends: 499 [2024-11-19 16:42:09,834 INFO L226 Difference]: Without dead ends: 441 [2024-11-19 16:42:09,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 16:42:09,836 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 815 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 16:42:09,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 128 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 16:42:09,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2024-11-19 16:42:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 388. [2024-11-19 16:42:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.2868217054263567) internal successors, (498), 387 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 498 transitions. [2024-11-19 16:42:09,856 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 498 transitions. Word has length 161 [2024-11-19 16:42:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:42:09,857 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 498 transitions. [2024-11-19 16:42:09,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.717948717948718) internal successors, (223), 39 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 498 transitions. [2024-11-19 16:42:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-19 16:42:09,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:42:09,862 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:42:09,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 16:42:10,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:10,063 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:42:10,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:42:10,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1096123988, now seen corresponding path program 5 times [2024-11-19 16:42:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:42:10,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446234925] [2024-11-19 16:42:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:10,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:42:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4311 backedges. 0 proven. 3816 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-19 16:42:11,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:42:11,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446234925] [2024-11-19 16:42:11,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446234925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:42:11,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271877762] [2024-11-19 16:42:11,772 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 16:42:11,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:11,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:42:11,775 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) [2024-11-19 16:42:11,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 16:42:21,211 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-19 16:42:21,211 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:42:21,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 16:42:21,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:42:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4311 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 3816 trivial. 0 not checked. [2024-11-19 16:42:21,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:42:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4311 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 3816 trivial. 0 not checked. [2024-11-19 16:42:22,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271877762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:42:22,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:42:22,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 21, 21] total 59 [2024-11-19 16:42:22,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814876736] [2024-11-19 16:42:22,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:42:22,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-19 16:42:22,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:42:22,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-19 16:42:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-19 16:42:22,111 INFO L87 Difference]: Start difference. First operand 388 states and 498 transitions. Second operand has 59 states, 59 states have (on average 5.898305084745763) internal successors, (348), 59 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:42:23,127 INFO L93 Difference]: Finished difference Result 752 states and 984 transitions. [2024-11-19 16:42:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-19 16:42:23,127 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.898305084745763) internal successors, (348), 59 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2024-11-19 16:42:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:42:23,134 INFO L225 Difference]: With dead ends: 752 [2024-11-19 16:42:23,134 INFO L226 Difference]: Without dead ends: 691 [2024-11-19 16:42:23,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-19 16:42:23,137 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1195 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 16:42:23,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 213 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 16:42:23,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-19 16:42:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 682. [2024-11-19 16:42:23,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.251101321585903) internal successors, (852), 681 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 852 transitions. [2024-11-19 16:42:23,171 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 852 transitions. Word has length 278 [2024-11-19 16:42:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:42:23,173 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 852 transitions. [2024-11-19 16:42:23,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.898305084745763) internal successors, (348), 59 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:42:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 852 transitions. [2024-11-19 16:42:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-19 16:42:23,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:42:23,187 INFO L215 NwaCegarLoop]: trace histogram [57, 56, 56, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:42:23,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 16:42:23,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:23,388 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:42:23,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:42:23,389 INFO L85 PathProgramCache]: Analyzing trace with hash -384656236, now seen corresponding path program 6 times [2024-11-19 16:42:23,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:42:23,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822450980] [2024-11-19 16:42:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:42:23,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:42:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:42:26,851 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 9296 refuted. 0 times theorem prover too weak. 4732 trivial. 0 not checked. [2024-11-19 16:42:26,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:42:26,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822450980] [2024-11-19 16:42:26,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822450980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:42:26,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750041054] [2024-11-19 16:42:26,852 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 16:42:26,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:42:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:42:26,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:42:26,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process