./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.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 5dc0e184171498e703ccf08545f4f79d3c1c383c8c0fc13a1f35990befb669a4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 12:59:17,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 12:59:17,344 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 12:59:17,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 12:59:17,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 12:59:17,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 12:59:17,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 12:59:17,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 12:59:17,395 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 12:59:17,395 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 12:59:17,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 12:59:17,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 12:59:17,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 12:59:17,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 12:59:17,397 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 12:59:17,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 12:59:17,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 12:59:17,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 12:59:17,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 12:59:17,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 12:59:17,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 12:59:17,400 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 12:59:17,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 12:59:17,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 12:59:17,401 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 12:59:17,401 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 12:59:17,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 12:59:17,402 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 12:59:17,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 12:59:17,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 12:59:17,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 12:59:17,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 12:59:17,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 12:59:17,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 12:59:17,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 12:59:17,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 12:59:17,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 12:59:17,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 12:59:17,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 12:59:17,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 12:59:17,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 12:59:17,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 12:59:17,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dc0e184171498e703ccf08545f4f79d3c1c383c8c0fc13a1f35990befb669a4 [2024-11-18 12:59:17,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 12:59:17,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 12:59:17,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 12:59:17,717 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 12:59:17,717 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 12:59:17,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2024-11-18 12:59:19,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 12:59:19,420 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 12:59:19,420 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2024-11-18 12:59:19,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbba8215d/c81ae08730ce4d859e220cd0f50fa5bc/FLAG7b8283b8d [2024-11-18 12:59:19,769 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbba8215d/c81ae08730ce4d859e220cd0f50fa5bc [2024-11-18 12:59:19,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 12:59:19,772 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 12:59:19,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 12:59:19,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 12:59:19,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 12:59:19,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:59:19" (1/1) ... [2024-11-18 12:59:19,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630ce887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:19, skipping insertion in model container [2024-11-18 12:59:19,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:59:19" (1/1) ... [2024-11-18 12:59:19,825 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 12:59:20,017 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2024-11-18 12:59:20,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 12:59:20,171 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 12:59:20,183 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2024-11-18 12:59:20,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 12:59:20,251 INFO L204 MainTranslator]: Completed translation [2024-11-18 12:59:20,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20 WrapperNode [2024-11-18 12:59:20,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 12:59:20,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 12:59:20,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 12:59:20,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 12:59:20,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,294 INFO L138 Inliner]: procedures = 126, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2024-11-18 12:59:20,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 12:59:20,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 12:59:20,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 12:59:20,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 12:59:20,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,325 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 0, 2]. 50 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 2]. The 0 writes are split as follows [0, 0, 0]. [2024-11-18 12:59:20,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,334 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 12:59:20,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 12:59:20,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 12:59:20,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 12:59:20,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (1/1) ... [2024-11-18 12:59:20,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 12:59:20,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 12:59:20,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 12:59:20,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 12:59:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2024-11-18 12:59:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2024-11-18 12:59:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 12:59:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2024-11-18 12:59:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2024-11-18 12:59:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 12:59:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 12:59:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-18 12:59:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2024-11-18 12:59:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2024-11-18 12:59:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 12:59:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 12:59:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 12:59:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 12:59:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 12:59:20,597 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 12:59:20,600 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 12:59:20,771 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-18 12:59:20,772 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 12:59:20,788 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 12:59:20,788 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 12:59:20,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:59:20 BoogieIcfgContainer [2024-11-18 12:59:20,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 12:59:20,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 12:59:20,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 12:59:20,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 12:59:20,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:59:19" (1/3) ... [2024-11-18 12:59:20,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54572e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:59:20, skipping insertion in model container [2024-11-18 12:59:20,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:20" (2/3) ... [2024-11-18 12:59:20,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54572e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:59:20, skipping insertion in model container [2024-11-18 12:59:20,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:59:20" (3/3) ... [2024-11-18 12:59:20,801 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2024-11-18 12:59:20,821 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 12:59:20,821 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 12:59:20,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 12:59:20,885 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;@6debb975, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 12:59:20,886 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 12:59:20,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 12:59:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-18 12:59:20,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:20,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:20,897 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:20,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash 484842023, now seen corresponding path program 1 times [2024-11-18 12:59:20,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:20,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377479417] [2024-11-18 12:59:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:20,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 12:59:21,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 12:59:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377479417] [2024-11-18 12:59:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377479417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 12:59:21,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 12:59:21,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 12:59:21,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221016672] [2024-11-18 12:59:21,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 12:59:21,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 12:59:21,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 12:59:21,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 12:59:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 12:59:21,301 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 12:59:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 12:59:21,357 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2024-11-18 12:59:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 12:59:21,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-18 12:59:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 12:59:21,368 INFO L225 Difference]: With dead ends: 68 [2024-11-18 12:59:21,368 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 12:59:21,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 12:59:21,375 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 12:59:21,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 103 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 12:59:21,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 12:59:21,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-18 12:59:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 12:59:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-18 12:59:21,413 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 7 [2024-11-18 12:59:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 12:59:21,413 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-18 12:59:21,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 12:59:21,414 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-18 12:59:21,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 12:59:21,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:21,415 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:21,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 12:59:21,416 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:21,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:21,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1134155612, now seen corresponding path program 1 times [2024-11-18 12:59:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:21,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631914187] [2024-11-18 12:59:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:21,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 12:59:21,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 12:59:21,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631914187] [2024-11-18 12:59:21,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631914187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 12:59:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322203680] [2024-11-18 12:59:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:21,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:21,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 12:59:21,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 12:59:21,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 12:59:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:21,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 12:59:21,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 12:59:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 12:59:21,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 12:59:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 12:59:22,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322203680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 12:59:22,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 12:59:22,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-18 12:59:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610930348] [2024-11-18 12:59:22,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 12:59:22,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 12:59:22,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 12:59:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 12:59:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 12:59:22,083 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 12:59:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 12:59:22,121 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2024-11-18 12:59:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 12:59:22,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-18 12:59:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 12:59:22,124 INFO L225 Difference]: With dead ends: 53 [2024-11-18 12:59:22,125 INFO L226 Difference]: Without dead ends: 33 [2024-11-18 12:59:22,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 12:59:22,128 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 12:59:22,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 12:59:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-18 12:59:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-18 12:59:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-18 12:59:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-18 12:59:22,141 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 26 [2024-11-18 12:59:22,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 12:59:22,142 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-18 12:59:22,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 12:59:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-18 12:59:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 12:59:22,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:22,143 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:22,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 12:59:22,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:22,348 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:22,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1951804062, now seen corresponding path program 1 times [2024-11-18 12:59:22,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:22,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851288943] [2024-11-18 12:59:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:22,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 12:59:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 12:59:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851288943] [2024-11-18 12:59:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851288943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 12:59:22,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 12:59:22,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 12:59:22,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883266863] [2024-11-18 12:59:22,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 12:59:22,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 12:59:22,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 12:59:22,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 12:59:22,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 12:59:22,522 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 12:59:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 12:59:22,554 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-11-18 12:59:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 12:59:22,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-18 12:59:22,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 12:59:22,559 INFO L225 Difference]: With dead ends: 51 [2024-11-18 12:59:22,559 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 12:59:22,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 12:59:22,561 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 12:59:22,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 12:59:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 12:59:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-18 12:59:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 12:59:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-18 12:59:22,573 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 26 [2024-11-18 12:59:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 12:59:22,574 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-18 12:59:22,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 12:59:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-18 12:59:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 12:59:22,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:22,576 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:22,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 12:59:22,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:22,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1250739484, now seen corresponding path program 1 times [2024-11-18 12:59:22,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:22,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338066303] [2024-11-18 12:59:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 12:59:22,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 12:59:22,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338066303] [2024-11-18 12:59:22,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338066303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 12:59:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372511729] [2024-11-18 12:59:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:22,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 12:59:22,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 12:59:22,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 12:59:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:23,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 12:59:23,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 12:59:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 12:59:23,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 12:59:23,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372511729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 12:59:23,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 12:59:23,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 23 [2024-11-18 12:59:23,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331181520] [2024-11-18 12:59:23,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 12:59:23,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 12:59:23,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 12:59:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 12:59:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-11-18 12:59:23,406 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 12:59:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 12:59:23,742 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-11-18 12:59:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 12:59:23,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-18 12:59:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 12:59:23,745 INFO L225 Difference]: With dead ends: 57 [2024-11-18 12:59:23,745 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 12:59:23,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 12:59:23,746 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 12:59:23,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 120 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 12:59:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 12:59:23,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2024-11-18 12:59:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-18 12:59:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2024-11-18 12:59:23,764 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 26 [2024-11-18 12:59:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 12:59:23,765 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2024-11-18 12:59:23,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 12:59:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2024-11-18 12:59:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 12:59:23,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:23,767 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:23,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 12:59:23,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 12:59:23,972 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:23,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash 937918941, now seen corresponding path program 1 times [2024-11-18 12:59:23,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:23,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485139102] [2024-11-18 12:59:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 12:59:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 12:59:24,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485139102] [2024-11-18 12:59:24,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485139102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 12:59:24,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27472122] [2024-11-18 12:59:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:24,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 12:59:24,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 12:59:24,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 12:59:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:24,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 12:59:24,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 12:59:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 12:59:24,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 12:59:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 12:59:24,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27472122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 12:59:24,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 12:59:24,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 21 [2024-11-18 12:59:24,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697607613] [2024-11-18 12:59:24,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 12:59:24,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 12:59:24,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 12:59:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 12:59:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-18 12:59:24,887 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 17 states have internal predecessors, (33), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 12:59:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 12:59:25,427 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-11-18 12:59:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 12:59:25,428 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 17 states have internal predecessors, (33), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-18 12:59:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 12:59:25,429 INFO L225 Difference]: With dead ends: 64 [2024-11-18 12:59:25,429 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 12:59:25,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 47 SyntacticMatches, 15 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2024-11-18 12:59:25,431 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 12:59:25,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 155 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 12:59:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 12:59:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2024-11-18 12:59:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.205128205128205) internal successors, (47), 41 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-18 12:59:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-11-18 12:59:25,440 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 33 [2024-11-18 12:59:25,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 12:59:25,445 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-11-18 12:59:25,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 17 states have internal predecessors, (33), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 12:59:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-11-18 12:59:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 12:59:25,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:25,446 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:25,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 12:59:25,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:25,649 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:25,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:25,650 INFO L85 PathProgramCache]: Analyzing trace with hash 128572315, now seen corresponding path program 1 times [2024-11-18 12:59:25,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:25,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535584630] [2024-11-18 12:59:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:25,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 12:59:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 12:59:25,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535584630] [2024-11-18 12:59:25,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535584630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 12:59:25,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228811899] [2024-11-18 12:59:25,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:25,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:25,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 12:59:25,865 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 12:59:25,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 12:59:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:25,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 12:59:25,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 12:59:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 12:59:26,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 12:59:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 12:59:26,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228811899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 12:59:26,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 12:59:26,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2024-11-18 12:59:26,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216510371] [2024-11-18 12:59:26,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 12:59:26,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 12:59:26,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 12:59:26,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 12:59:26,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2024-11-18 12:59:26,631 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 32 states, 32 states have (on average 1.9375) internal successors, (62), 26 states have internal predecessors, (62), 7 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 12:59:27,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 12:59:27,443 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2024-11-18 12:59:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 12:59:27,444 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 26 states have internal predecessors, (62), 7 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 33 [2024-11-18 12:59:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 12:59:27,445 INFO L225 Difference]: With dead ends: 74 [2024-11-18 12:59:27,445 INFO L226 Difference]: Without dead ends: 64 [2024-11-18 12:59:27,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=279, Invalid=1701, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 12:59:27,447 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 118 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 12:59:27,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 146 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 12:59:27,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-18 12:59:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2024-11-18 12:59:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-18 12:59:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-18 12:59:27,460 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 33 [2024-11-18 12:59:27,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 12:59:27,461 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-18 12:59:27,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 26 states have internal predecessors, (62), 7 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 12:59:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-18 12:59:27,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 12:59:27,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:27,463 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:27,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 12:59:27,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:27,664 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:27,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1975182920, now seen corresponding path program 1 times [2024-11-18 12:59:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:27,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536373027] [2024-11-18 12:59:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:27,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 12:59:27,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 12:59:27,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536373027] [2024-11-18 12:59:27,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536373027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 12:59:27,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773593855] [2024-11-18 12:59:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:27,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:27,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 12:59:27,941 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 12:59:27,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 12:59:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:28,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 12:59:28,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 12:59:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 12:59:28,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 12:59:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 12:59:28,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773593855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 12:59:28,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 12:59:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 28 [2024-11-18 12:59:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974674841] [2024-11-18 12:59:28,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 12:59:28,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 12:59:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 12:59:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 12:59:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2024-11-18 12:59:28,652 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 23 states have internal predecessors, (55), 8 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 12:59:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 12:59:29,223 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2024-11-18 12:59:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 12:59:29,224 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 23 states have internal predecessors, (55), 8 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2024-11-18 12:59:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 12:59:29,225 INFO L225 Difference]: With dead ends: 85 [2024-11-18 12:59:29,225 INFO L226 Difference]: Without dead ends: 71 [2024-11-18 12:59:29,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 14 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=1754, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 12:59:29,227 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 12:59:29,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 200 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 12:59:29,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-18 12:59:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2024-11-18 12:59:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 12:59:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-11-18 12:59:29,237 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 43 [2024-11-18 12:59:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 12:59:29,237 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-11-18 12:59:29,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 23 states have internal predecessors, (55), 8 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 12:59:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-11-18 12:59:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 12:59:29,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:29,239 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:29,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 12:59:29,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:29,443 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:29,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash -544777014, now seen corresponding path program 1 times [2024-11-18 12:59:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:29,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747599907] [2024-11-18 12:59:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:29,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 12:59:29,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 12:59:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747599907] [2024-11-18 12:59:29,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747599907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 12:59:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871819424] [2024-11-18 12:59:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:29,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:29,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 12:59:29,706 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 12:59:29,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 12:59:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:29,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 12:59:29,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 12:59:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 12:59:29,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 12:59:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 12:59:30,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871819424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 12:59:30,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 12:59:30,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 21 [2024-11-18 12:59:30,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490408380] [2024-11-18 12:59:30,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 12:59:30,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 12:59:30,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 12:59:30,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 12:59:30,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-18 12:59:30,139 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 12:59:30,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 12:59:30,509 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2024-11-18 12:59:30,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 12:59:30,509 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2024-11-18 12:59:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 12:59:30,510 INFO L225 Difference]: With dead ends: 71 [2024-11-18 12:59:30,511 INFO L226 Difference]: Without dead ends: 68 [2024-11-18 12:59:30,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 69 SyntacticMatches, 15 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2024-11-18 12:59:30,512 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 12:59:30,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 156 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 12:59:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-18 12:59:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2024-11-18 12:59:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 12:59:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-11-18 12:59:30,529 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 43 [2024-11-18 12:59:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 12:59:30,529 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-11-18 12:59:30,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 12:59:30,530 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-11-18 12:59:30,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 12:59:30,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:30,531 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:30,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 12:59:30,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:30,735 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:30,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:30,735 INFO L85 PathProgramCache]: Analyzing trace with hash 156287564, now seen corresponding path program 1 times [2024-11-18 12:59:30,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:30,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568565074] [2024-11-18 12:59:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:30,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 12:59:30,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 12:59:30,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568565074] [2024-11-18 12:59:30,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568565074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 12:59:30,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499494639] [2024-11-18 12:59:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:30,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:30,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 12:59:30,857 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 12:59:30,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 12:59:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 12:59:30,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 12:59:30,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 12:59:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 12:59:31,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 12:59:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 12:59:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499494639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 12:59:31,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 12:59:31,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 15 [2024-11-18 12:59:31,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780931963] [2024-11-18 12:59:31,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 12:59:31,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 12:59:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 12:59:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 12:59:31,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-18 12:59:31,143 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 12 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 12:59:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 12:59:31,360 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2024-11-18 12:59:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 12:59:31,360 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 12 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2024-11-18 12:59:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 12:59:31,361 INFO L225 Difference]: With dead ends: 71 [2024-11-18 12:59:31,361 INFO L226 Difference]: Without dead ends: 53 [2024-11-18 12:59:31,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-18 12:59:31,362 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 12:59:31,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 151 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 12:59:31,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-18 12:59:31,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-18 12:59:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-18 12:59:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-11-18 12:59:31,378 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 43 [2024-11-18 12:59:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 12:59:31,379 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-11-18 12:59:31,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 12 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 12:59:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-11-18 12:59:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 12:59:31,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 12:59:31,380 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:31,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 12:59:31,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 12:59:31,581 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 12:59:31,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 12:59:31,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2126992523, now seen corresponding path program 1 times [2024-11-18 12:59:31,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 12:59:31,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713766983] [2024-11-18 12:59:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 12:59:31,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 12:59:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 12:59:31,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-18 12:59:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 12:59:31,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-18 12:59:31,633 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-18 12:59:31,634 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 12:59:31,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 12:59:31,639 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 12:59:31,687 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 12:59:31,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:59:31 BoogieIcfgContainer [2024-11-18 12:59:31,689 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 12:59:31,690 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 12:59:31,690 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 12:59:31,690 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 12:59:31,691 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:59:20" (3/4) ... [2024-11-18 12:59:31,692 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-18 12:59:31,751 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 12:59:31,751 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 12:59:31,752 INFO L158 Benchmark]: Toolchain (without parser) took 11979.80ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 101.4MB in the beginning and 164.6MB in the end (delta: -63.2MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-11-18 12:59:31,752 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 155.2MB. Free memory was 125.8MB in the beginning and 125.7MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 12:59:31,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.91ms. Allocated memory is still 155.2MB. Free memory was 100.9MB in the beginning and 81.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-18 12:59:31,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.60ms. Allocated memory is still 155.2MB. Free memory was 81.5MB in the beginning and 79.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 12:59:31,756 INFO L158 Benchmark]: Boogie Preprocessor took 45.60ms. Allocated memory is still 155.2MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 12:59:31,756 INFO L158 Benchmark]: RCFGBuilder took 446.94ms. Allocated memory is still 155.2MB. Free memory was 77.8MB in the beginning and 63.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-18 12:59:31,756 INFO L158 Benchmark]: TraceAbstraction took 10898.57ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 62.7MB in the beginning and 168.8MB in the end (delta: -106.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 12:59:31,757 INFO L158 Benchmark]: Witness Printer took 61.51ms. Allocated memory is still 224.4MB. Free memory was 168.8MB in the beginning and 164.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 12:59:31,758 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 155.2MB. Free memory was 125.8MB in the beginning and 125.7MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 478.91ms. Allocated memory is still 155.2MB. Free memory was 100.9MB in the beginning and 81.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.60ms. Allocated memory is still 155.2MB. Free memory was 81.5MB in the beginning and 79.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.60ms. Allocated memory is still 155.2MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.94ms. Allocated memory is still 155.2MB. Free memory was 77.8MB in the beginning and 63.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10898.57ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 62.7MB in the beginning and 168.8MB in the end (delta: -106.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 61.51ms. Allocated memory is still 224.4MB. Free memory was 168.8MB in the beginning and 164.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L519] void * guard_malloc_counter = 0; [L534] struct list_head *elem = ((void *)0); [L544] static struct list_head head; [L544] static struct list_head head; [L544] static struct list_head head; VAL [elem={0:0}, guard_malloc_counter={0:0}, head={4:0}] [L546] struct list_head *dev1, *dev2; VAL [elem={0:0}, guard_malloc_counter={0:0}, head={4:0}] [L547] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [elem={0:0}, guard_malloc_counter={0:0}, head={4:0}] [L529] CALL, EXPR __getMemory(size) [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:0}, head={4:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; VAL [\result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={4:0}] [L529] RET, EXPR __getMemory(size) [L529] return __getMemory(size); [L547] RET, EXPR my_malloc(sizeof(*dev1)) VAL [elem={0:0}, guard_malloc_counter={0:1}, head={4:0}] [L547] dev1 = my_malloc(sizeof(*dev1)) [L548] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [elem={0:0}, guard_malloc_counter={0:1}, head={4:0}] [L529] CALL, EXPR __getMemory(size) [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:1}, head={4:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; VAL [\result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}] [L529] RET, EXPR __getMemory(size) [L529] return __getMemory(size); [L548] RET, EXPR my_malloc(sizeof(*dev2)) VAL [dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}] [L548] dev2 = my_malloc(sizeof(*dev2)) [L549] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}] [L550] CALL list_add(dev2, &head) VAL [\old(head)={4:0}, \old(new)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(head)={4:0}, \old(new)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}, new={0:2}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new VAL [\old(head)={4:0}, \old(new)={0:2}, elem={0:2}, guard_malloc_counter={0:2}, head={4:0}] [L550] RET list_add(dev2, &head) VAL [dev1={0:1}, dev2={0:2}, elem={0:2}, guard_malloc_counter={0:2}, head={4:0}] [L551] CALL list_add(dev1, &head) VAL [\old(head)={4:0}, \old(new)={0:1}, elem={0:2}, guard_malloc_counter={0:2}, head={4:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(head)={4:0}, \old(new)={0:1}, elem={0:2}, guard_malloc_counter={0:2}, head={4:0}, new={0:1}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new VAL [\old(head)={4:0}, \old(new)={0:1}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L551] RET list_add(dev1, &head) VAL [dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L552] CALL list_del(dev2) [L541] COND FALSE !(entry==elem) VAL [elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L552] RET list_del(dev2) [L553] CALL list_add(dev2, &head) VAL [\old(head)={4:0}, \old(new)={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(head)={4:0}, \old(new)={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}, new={0:2}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L553] RET list_add(dev2, &head) VAL [dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L554] CALL list_add(dev1, &head) VAL [\old(head)={4:0}, \old(new)={0:1}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(head)={4:0}, \old(new)={0:1}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}, new={0:1}] [L536] CALL __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L6] reach_error() VAL [elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 352 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 349 mSDsluCounter, 1366 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1147 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3386 IncrementalHoareTripleChecker+Invalid, 3584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 219 mSDtfsCounter, 3386 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 629 GetRequests, 382 SyntacticMatches, 45 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=7, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 46 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 577 NumberOfCodeBlocks, 577 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 726 ConstructedInterpolants, 0 QuantifiedInterpolants, 2455 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1439 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 22 InterpolantComputations, 3 PerfectInterpolantSequences, 159/249 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-18 12:59:31,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE