./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.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 9000cc374a0af085b03570a511ad19fd711a120ab7f5d5a9a2c4565265355a73 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:06:42,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:06:42,294 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:06:42,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:06:42,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:06:42,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:06:42,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:06:42,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:06:42,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:06:42,334 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:06:42,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:06:42,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:06:42,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:06:42,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:06:42,336 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:06:42,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:06:42,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:06:42,337 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:06:42,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:06:42,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:06:42,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:06:42,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:06:42,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:06:42,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:06:42,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:06:42,340 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:06:42,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:06:42,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:06:42,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:06:42,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:06:42,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:06:42,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:06:42,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:06:42,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:06:42,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:06:42,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:06:42,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:06:42,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:06:42,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:06:42,344 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:06:42,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:06:42,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:06:42,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9000cc374a0af085b03570a511ad19fd711a120ab7f5d5a9a2c4565265355a73 [2024-10-14 14:06:42,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:06:42,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:06:42,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:06:42,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:06:42,596 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:06:42,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.i [2024-10-14 14:06:43,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:06:44,168 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:06:44,169 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.i [2024-10-14 14:06:44,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d78770e/97eb145c79124bb384828786a4c1062c/FLAG176ca7a49 [2024-10-14 14:06:44,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d78770e/97eb145c79124bb384828786a4c1062c [2024-10-14 14:06:44,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:06:44,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:06:44,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:06:44,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:06:44,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:06:44,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23617838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44, skipping insertion in model container [2024-10-14 14:06:44,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,242 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:06:44,390 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.i[917,930] [2024-10-14 14:06:44,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:06:44,477 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:06:44,493 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.i[917,930] [2024-10-14 14:06:44,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:06:44,573 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:06:44,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44 WrapperNode [2024-10-14 14:06:44,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:06:44,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:06:44,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:06:44,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:06:44,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,634 INFO L138 Inliner]: procedures = 29, calls = 188, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 610 [2024-10-14 14:06:44,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:06:44,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:06:44,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:06:44,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:06:44,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,679 INFO L175 MemorySlicer]: Split 160 memory accesses to 2 slices as follows [2, 158]. 99 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 12]. The 16 writes are split as follows [0, 16]. [2024-10-14 14:06:44,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:06:44,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:06:44,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:06:44,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:06:44,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (1/1) ... [2024-10-14 14:06:44,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:06:44,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:06:44,757 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) [2024-10-14 14:06:44,764 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 [2024-10-14 14:06:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:06:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 14:06:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 14:06:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:06:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:06:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-14 14:06:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-14 14:06:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:06:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:06:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 14:06:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 14:06:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 14:06:44,817 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 14:06:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:06:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:06:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:06:44,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:06:44,956 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:06:44,959 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:06:45,526 INFO L? ?]: Removed 188 outVars from TransFormulas that were not future-live. [2024-10-14 14:06:45,526 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:06:45,572 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:06:45,574 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 14:06:45,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:06:45 BoogieIcfgContainer [2024-10-14 14:06:45,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:06:45,592 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:06:45,592 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:06:45,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:06:45,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:06:44" (1/3) ... [2024-10-14 14:06:45,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e387e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:06:45, skipping insertion in model container [2024-10-14 14:06:45,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:44" (2/3) ... [2024-10-14 14:06:45,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e387e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:06:45, skipping insertion in model container [2024-10-14 14:06:45,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:06:45" (3/3) ... [2024-10-14 14:06:45,603 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-39.i [2024-10-14 14:06:45,634 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:06:45,635 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:06:45,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:06:45,741 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;@24417702, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:06:45,741 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 14:06:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 95 states have internal predecessors, (138), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:06:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-14 14:06:45,761 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:06:45,762 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:06:45,764 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:06:45,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:06:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash 698592777, now seen corresponding path program 1 times [2024-10-14 14:06:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:06:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310675045] [2024-10-14 14:06:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:06:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:06:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:06:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:06:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:06:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:06:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:06:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:06:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:06:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:06:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-14 14:06:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:06:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-14 14:06:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-14 14:06:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 14:06:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-14 14:06:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 14:06:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 14:06:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:06:46,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:06:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310675045] [2024-10-14 14:06:46,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310675045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:06:46,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:06:46,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:06:46,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954995787] [2024-10-14 14:06:46,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:06:46,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 14:06:46,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:06:46,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 14:06:46,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 14:06:46,201 INFO L87 Difference]: Start difference. First operand has 113 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 95 states have internal predecessors, (138), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:06:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:06:46,247 INFO L93 Difference]: Finished difference Result 223 states and 354 transitions. [2024-10-14 14:06:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 14:06:46,250 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2024-10-14 14:06:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:06:46,259 INFO L225 Difference]: With dead ends: 223 [2024-10-14 14:06:46,259 INFO L226 Difference]: Without dead ends: 111 [2024-10-14 14:06:46,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 14:06:46,268 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 14:06:46,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 14:06:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-10-14 14:06:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-10-14 14:06:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 93 states have internal predecessors, (133), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:06:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 165 transitions. [2024-10-14 14:06:46,327 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 165 transitions. Word has length 123 [2024-10-14 14:06:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:06:46,328 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 165 transitions. [2024-10-14 14:06:46,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:06:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 165 transitions. [2024-10-14 14:06:46,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-14 14:06:46,332 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:06:46,332 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:06:46,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:06:46,333 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:06:46,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:06:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1396066637, now seen corresponding path program 1 times [2024-10-14 14:06:46,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:06:46,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441897941] [2024-10-14 14:06:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:06:46,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:06:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:06:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:06:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:06:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:06:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:06:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:06:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:06:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:06:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-14 14:06:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:06:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-14 14:06:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-14 14:06:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 14:06:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-14 14:06:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 14:06:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 14:06:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:06:52,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:06:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441897941] [2024-10-14 14:06:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441897941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:06:52,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:06:52,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-10-14 14:06:52,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010863625] [2024-10-14 14:06:52,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:06:52,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 14:06:52,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:06:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 14:06:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-10-14 14:06:52,668 INFO L87 Difference]: Start difference. First operand 111 states and 165 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:06:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:06:56,189 INFO L93 Difference]: Finished difference Result 280 states and 417 transitions. [2024-10-14 14:06:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 14:06:56,189 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2024-10-14 14:06:56,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:06:56,192 INFO L225 Difference]: With dead ends: 280 [2024-10-14 14:06:56,192 INFO L226 Difference]: Without dead ends: 170 [2024-10-14 14:06:56,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2024-10-14 14:06:56,195 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 366 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-14 14:06:56,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 685 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-14 14:06:56,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-10-14 14:06:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 121. [2024-10-14 14:06:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 103 states have internal predecessors, (147), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:06:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 179 transitions. [2024-10-14 14:06:56,220 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 179 transitions. Word has length 123 [2024-10-14 14:06:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:06:56,222 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 179 transitions. [2024-10-14 14:06:56,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:06:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 179 transitions. [2024-10-14 14:06:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-14 14:06:56,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:06:56,225 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:06:56,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:06:56,225 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:06:56,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:06:56,226 INFO L85 PathProgramCache]: Analyzing trace with hash 586720011, now seen corresponding path program 1 times [2024-10-14 14:06:56,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:06:56,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981002391] [2024-10-14 14:06:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:06:56,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:06:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:06:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:06:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:06:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:06:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:06:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:06:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:06:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:06:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-14 14:06:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:06:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-14 14:06:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-14 14:06:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 14:06:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-14 14:06:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 14:06:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 14:06:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:06:57,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:06:57,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981002391] [2024-10-14 14:06:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981002391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:06:57,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:06:57,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-14 14:06:57,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358314490] [2024-10-14 14:06:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:06:57,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 14:06:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:06:57,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 14:06:57,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:06:57,612 INFO L87 Difference]: Start difference. First operand 121 states and 179 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:06:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:06:58,681 INFO L93 Difference]: Finished difference Result 348 states and 517 transitions. [2024-10-14 14:06:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:06:58,682 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2024-10-14 14:06:58,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:06:58,685 INFO L225 Difference]: With dead ends: 348 [2024-10-14 14:06:58,685 INFO L226 Difference]: Without dead ends: 228 [2024-10-14 14:06:58,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-10-14 14:06:58,691 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 680 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 14:06:58,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 577 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 14:06:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-14 14:06:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 143. [2024-10-14 14:06:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 125 states have (on average 1.44) internal successors, (180), 125 states have internal predecessors, (180), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:06:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 212 transitions. [2024-10-14 14:06:58,722 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 212 transitions. Word has length 123 [2024-10-14 14:06:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:06:58,722 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 212 transitions. [2024-10-14 14:06:58,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:06:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 212 transitions. [2024-10-14 14:06:58,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-14 14:06:58,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:06:58,726 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:06:58,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:06:58,727 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:06:58,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:06:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash 374998283, now seen corresponding path program 1 times [2024-10-14 14:06:58,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:06:58,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373018672] [2024-10-14 14:06:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:06:58,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:06:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:06:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:06:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:06:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:06:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:06:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:06:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:06:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:06:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-14 14:06:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:06:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-14 14:06:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-14 14:06:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 14:06:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-14 14:06:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 14:06:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 14:06:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:06:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:06:59,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:06:59,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373018672] [2024-10-14 14:06:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373018672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:06:59,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:06:59,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 14:06:59,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716145376] [2024-10-14 14:06:59,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:06:59,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 14:06:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:06:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 14:06:59,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-14 14:06:59,935 INFO L87 Difference]: Start difference. First operand 143 states and 212 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:07:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:07:00,883 INFO L93 Difference]: Finished difference Result 372 states and 551 transitions. [2024-10-14 14:07:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:07:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2024-10-14 14:07:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:07:00,889 INFO L225 Difference]: With dead ends: 372 [2024-10-14 14:07:00,889 INFO L226 Difference]: Without dead ends: 230 [2024-10-14 14:07:00,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-10-14 14:07:00,894 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 438 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 14:07:00,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 741 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 14:07:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-10-14 14:07:00,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 143. [2024-10-14 14:07:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 125 states have (on average 1.432) internal successors, (179), 125 states have internal predecessors, (179), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:07:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 211 transitions. [2024-10-14 14:07:00,922 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 211 transitions. Word has length 123 [2024-10-14 14:07:00,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:07:00,922 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 211 transitions. [2024-10-14 14:07:00,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:07:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 211 transitions. [2024-10-14 14:07:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-14 14:07:00,924 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:07:00,925 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:07:00,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:07:00,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:07:00,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:07:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash -434348343, now seen corresponding path program 1 times [2024-10-14 14:07:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:07:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025665910] [2024-10-14 14:07:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:07:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:07:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:07:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:07:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:07:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:07:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:07:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:07:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:07:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:07:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-14 14:07:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:07:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:07,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-14 14:07:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:08,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-14 14:07:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:08,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 14:07:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:08,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-14 14:07:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:08,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 14:07:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:08,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 14:07:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 14:07:08,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:07:08,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025665910] [2024-10-14 14:07:08,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025665910] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:07:08,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782593099] [2024-10-14 14:07:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:07:08,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:07:08,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:07:08,092 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) [2024-10-14 14:07:08,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:07:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:08,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-10-14 14:07:08,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:07:08,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 14:07:10,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:07:11,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2024-10-14 14:07:11,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2024-10-14 14:07:12,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2024-10-14 14:07:13,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2024-10-14 14:07:13,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2024-10-14 14:07:14,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2024-10-14 14:07:15,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2024-10-14 14:07:16,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 102 [2024-10-14 14:07:16,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:16,445 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-10-14 14:07:16,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 177 treesize of output 120 [2024-10-14 14:07:17,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,487 INFO L349 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2024-10-14 14:07:17,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 146 treesize of output 101 [2024-10-14 14:07:17,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:17,888 INFO L349 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2024-10-14 14:07:17,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 173 treesize of output 97 [2024-10-14 14:07:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 154 proven. 223 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-10-14 14:07:18,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:07:26,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782593099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:07:26,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:07:26,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 32] total 50 [2024-10-14 14:07:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802572268] [2024-10-14 14:07:26,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 14:07:26,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-14 14:07:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:07:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-14 14:07:26,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=3249, Unknown=0, NotChecked=0, Total=3540 [2024-10-14 14:07:26,021 INFO L87 Difference]: Start difference. First operand 143 states and 211 transitions. Second operand has 50 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 46 states have internal predecessors, (107), 11 states have call successors, (32), 7 states have call predecessors, (32), 9 states have return successors, (32), 8 states have call predecessors, (32), 11 states have call successors, (32) [2024-10-14 14:07:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:07:39,325 INFO L93 Difference]: Finished difference Result 430 states and 618 transitions. [2024-10-14 14:07:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-14 14:07:39,326 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 46 states have internal predecessors, (107), 11 states have call successors, (32), 7 states have call predecessors, (32), 9 states have return successors, (32), 8 states have call predecessors, (32), 11 states have call successors, (32) Word has length 123 [2024-10-14 14:07:39,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:07:39,328 INFO L225 Difference]: With dead ends: 430 [2024-10-14 14:07:39,328 INFO L226 Difference]: Without dead ends: 288 [2024-10-14 14:07:39,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=1368, Invalid=9344, Unknown=0, NotChecked=0, Total=10712 [2024-10-14 14:07:39,334 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 814 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 4816 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 4931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 4816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-10-14 14:07:39,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2665 Invalid, 4931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 4816 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-10-14 14:07:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-10-14 14:07:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 178. [2024-10-14 14:07:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 156 states have (on average 1.4102564102564104) internal successors, (220), 156 states have internal predecessors, (220), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:07:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 252 transitions. [2024-10-14 14:07:39,373 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 252 transitions. Word has length 123 [2024-10-14 14:07:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:07:39,374 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 252 transitions. [2024-10-14 14:07:39,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 46 states have internal predecessors, (107), 11 states have call successors, (32), 7 states have call predecessors, (32), 9 states have return successors, (32), 8 states have call predecessors, (32), 11 states have call successors, (32) [2024-10-14 14:07:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 252 transitions. [2024-10-14 14:07:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 14:07:39,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:07:39,378 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:07:39,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 14:07:39,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:07:39,583 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:07:39,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:07:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash 581619733, now seen corresponding path program 1 times [2024-10-14 14:07:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:07:39,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291363136] [2024-10-14 14:07:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:07:39,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:07:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:07:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:07:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:07:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:07:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:07:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:07:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:07:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:07:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-14 14:07:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:07:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-14 14:07:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-14 14:07:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 14:07:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-14 14:07:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 14:07:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 14:07:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 14:07:44,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:07:44,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291363136] [2024-10-14 14:07:44,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291363136] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:07:44,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167568110] [2024-10-14 14:07:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:07:44,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:07:44,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:07:44,379 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) [2024-10-14 14:07:44,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:07:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:07:44,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 142 conjuncts are in the unsatisfiable core [2024-10-14 14:07:44,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:07:44,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 14:07:45,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:07:47,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2024-10-14 14:07:48,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2024-10-14 14:07:49,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 50 [2024-10-14 14:07:50,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 50 [2024-10-14 14:07:50,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 50 [2024-10-14 14:07:51,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 50 [2024-10-14 14:07:52,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 50 [2024-10-14 14:07:53,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 117 [2024-10-14 14:07:53,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:53,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 128 [2024-10-14 14:07:55,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:07:55,076 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-14 14:07:55,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 120 [2024-10-14 14:07:56,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:07:56,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 39 case distinctions, treesize of input 324 treesize of output 472