./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms1.c --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/array-fpi/ms1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f19b0f8887e7e48eabb6ce59c44b5494c064f6817a5ff1a77078d9e3a8f8600e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:26:12,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:26:12,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:26:12,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:26:12,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:26:12,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:26:12,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:26:12,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:26:12,210 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:26:12,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:26:12,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:26:12,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:26:12,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:26:12,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:26:12,211 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:26:12,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:26:12,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:26:12,213 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:26:12,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:26:12,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:26:12,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:26:12,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:26:12,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:26:12,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:26:12,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:26:12,218 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:26:12,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:26:12,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:26:12,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:26:12,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:26:12,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:26:12,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:26:12,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:26:12,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:26:12,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:26:12,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:26:12,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:26:12,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:26:12,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:26:12,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:26:12,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:26:12,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:26:12,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f19b0f8887e7e48eabb6ce59c44b5494c064f6817a5ff1a77078d9e3a8f8600e [2024-11-18 09:26:12,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:26:12,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:26:12,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:26:12,449 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:26:12,450 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:26:12,450 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms1.c [2024-11-18 09:26:13,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:26:13,798 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:26:13,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms1.c [2024-11-18 09:26:13,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271039469/73177142636b4224bd4edde716ba3653/FLAG36ec7c983 [2024-11-18 09:26:13,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271039469/73177142636b4224bd4edde716ba3653 [2024-11-18 09:26:13,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:26:13,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:26:13,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:26:13,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:26:13,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:26:13,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:26:13" (1/1) ... [2024-11-18 09:26:13,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f9ddb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:13, skipping insertion in model container [2024-11-18 09:26:13,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:26:13" (1/1) ... [2024-11-18 09:26:13,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:26:14,022 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms1.c[586,599] [2024-11-18 09:26:14,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:26:14,050 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:26:14,061 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms1.c[586,599] [2024-11-18 09:26:14,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:26:14,081 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:26:14,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14 WrapperNode [2024-11-18 09:26:14,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:26:14,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:26:14,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:26:14,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:26:14,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,114 INFO L138 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-11-18 09:26:14,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:26:14,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:26:14,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:26:14,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:26:14,122 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,125 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,138 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 6, 4, 2]. 43 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0]. The 3 writes are split as follows [0, 0, 2, 1]. [2024-11-18 09:26:14,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:26:14,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:26:14,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:26:14,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:26:14,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (1/1) ... [2024-11-18 09:26:14,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:26:14,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:14,176 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 09:26:14,179 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 09:26:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:26:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:26:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:26:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:26:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 09:26:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:26:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:26:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:26:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:26:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 09:26:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 09:26:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:26:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:26:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:26:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:26:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:26:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 09:26:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:26:14,278 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:26:14,279 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:26:14,379 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-18 09:26:14,379 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:26:14,387 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:26:14,388 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 09:26:14,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:26:14 BoogieIcfgContainer [2024-11-18 09:26:14,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:26:14,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:26:14,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:26:14,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:26:14,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:26:13" (1/3) ... [2024-11-18 09:26:14,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea6bf21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:26:14, skipping insertion in model container [2024-11-18 09:26:14,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:14" (2/3) ... [2024-11-18 09:26:14,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea6bf21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:26:14, skipping insertion in model container [2024-11-18 09:26:14,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:26:14" (3/3) ... [2024-11-18 09:26:14,393 INFO L112 eAbstractionObserver]: Analyzing ICFG ms1.c [2024-11-18 09:26:14,405 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:26:14,405 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:26:14,446 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:26:14,451 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;@7b0f302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:26:14,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:26:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 09:26:14,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:14,458 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:14,458 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:14,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:14,461 INFO L85 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2024-11-18 09:26:14,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:14,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208204479] [2024-11-18 09:26:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:14,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:14,590 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 09:26:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208204479] [2024-11-18 09:26:14,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208204479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:26:14,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:26:14,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:26:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385595813] [2024-11-18 09:26:14,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:26:14,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:26:14,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:14,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:26:14,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:26:14,613 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:14,622 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-11-18 09:26:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:26:14,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 09:26:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:14,628 INFO L225 Difference]: With dead ends: 34 [2024-11-18 09:26:14,628 INFO L226 Difference]: Without dead ends: 15 [2024-11-18 09:26:14,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:26:14,632 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:14,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:26:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-18 09:26:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-18 09:26:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-18 09:26:14,654 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-18 09:26:14,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:14,654 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-18 09:26:14,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,654 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-18 09:26:14,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 09:26:14,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:14,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:14,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:26:14,655 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:14,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2024-11-18 09:26:14,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817895151] [2024-11-18 09:26:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:14,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:14,778 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 09:26:14,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:14,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817895151] [2024-11-18 09:26:14,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817895151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:26:14,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:26:14,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:26:14,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436731737] [2024-11-18 09:26:14,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:26:14,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:26:14,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:26:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:26:14,782 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:14,827 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-18 09:26:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:26:14,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 09:26:14,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:14,829 INFO L225 Difference]: With dead ends: 28 [2024-11-18 09:26:14,829 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 09:26:14,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:26:14,830 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:14,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:26:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 09:26:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-18 09:26:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-18 09:26:14,837 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2024-11-18 09:26:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:14,838 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-18 09:26:14,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-18 09:26:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 09:26:14,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:14,838 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:14,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:26:14,839 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:14,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:14,840 INFO L85 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2024-11-18 09:26:14,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:14,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260626756] [2024-11-18 09:26:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:14,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260626756] [2024-11-18 09:26:15,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260626756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:26:15,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:26:15,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:26:15,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507073652] [2024-11-18 09:26:15,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:26:15,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:26:15,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:15,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:26:15,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:26:15,079 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:15,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:15,098 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-18 09:26:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:26:15,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-18 09:26:15,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:15,099 INFO L225 Difference]: With dead ends: 25 [2024-11-18 09:26:15,099 INFO L226 Difference]: Without dead ends: 21 [2024-11-18 09:26:15,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:26:15,101 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:15,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:26:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-18 09:26:15,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-18 09:26:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-18 09:26:15,109 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2024-11-18 09:26:15,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:15,109 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-18 09:26:15,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-18 09:26:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 09:26:15,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:15,110 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:15,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:26:15,111 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:15,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -422196611, now seen corresponding path program 1 times [2024-11-18 09:26:15,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:15,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315742078] [2024-11-18 09:26:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:15,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:15,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:15,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315742078] [2024-11-18 09:26:15,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315742078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:15,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427694702] [2024-11-18 09:26:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:15,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:15,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:15,234 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 09:26:15,235 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 09:26:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:15,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:26:15,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:15,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:15,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427694702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:15,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:15,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:26:15,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307376455] [2024-11-18 09:26:15,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:15,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:26:15,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:15,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:26:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:26:15,417 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:15,498 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-18 09:26:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:26:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-18 09:26:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:15,499 INFO L225 Difference]: With dead ends: 39 [2024-11-18 09:26:15,499 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 09:26:15,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:26:15,500 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:15,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 09:26:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-18 09:26:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:15,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-18 09:26:15,503 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2024-11-18 09:26:15,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:15,503 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-18 09:26:15,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-18 09:26:15,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 09:26:15,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:15,504 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:15,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 09:26:15,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:15,709 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:15,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 692240447, now seen corresponding path program 2 times [2024-11-18 09:26:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482585617] [2024-11-18 09:26:15,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:15,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:15,742 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:15,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:16,138 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 09:26:16,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:16,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482585617] [2024-11-18 09:26:16,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482585617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:16,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801067547] [2024-11-18 09:26:16,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:16,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:16,142 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 09:26:16,143 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 09:26:16,200 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:16,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:16,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 09:26:16,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:16,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-18 09:26:16,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:16,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:16,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 23 [2024-11-18 09:26:16,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-18 09:26:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:16,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:16,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-18 09:26:16,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-11-18 09:26:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801067547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:16,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:16,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 26 [2024-11-18 09:26:16,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694843776] [2024-11-18 09:26:16,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:16,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 09:26:16,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:16,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 09:26:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2024-11-18 09:26:16,803 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:17,052 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2024-11-18 09:26:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 09:26:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-18 09:26:17,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:17,053 INFO L225 Difference]: With dead ends: 38 [2024-11-18 09:26:17,053 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 09:26:17,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=845, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 09:26:17,054 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:17,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 50 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:17,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 09:26:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-18 09:26:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-18 09:26:17,057 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2024-11-18 09:26:17,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:17,057 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-18 09:26:17,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-18 09:26:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 09:26:17,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:17,058 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:17,070 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 09:26:17,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:17,262 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:17,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash -301520475, now seen corresponding path program 3 times [2024-11-18 09:26:17,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:17,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608472155] [2024-11-18 09:26:17,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:17,285 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 09:26:17,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:17,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:17,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608472155] [2024-11-18 09:26:17,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608472155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:17,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067213120] [2024-11-18 09:26:17,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:17,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:17,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:17,367 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 09:26:17,368 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 09:26:17,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 09:26:17,425 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:17,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:26:17,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:17,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:17,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067213120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:17,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:17,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 09:26:17,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769099144] [2024-11-18 09:26:17,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:17,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:26:17,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:17,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:26:17,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:26:17,536 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:17,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:17,606 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-18 09:26:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:26:17,606 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-18 09:26:17,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:17,607 INFO L225 Difference]: With dead ends: 45 [2024-11-18 09:26:17,607 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 09:26:17,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:26:17,607 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:17,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:17,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 09:26:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-18 09:26:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-18 09:26:17,611 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2024-11-18 09:26:17,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:17,611 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-18 09:26:17,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-18 09:26:17,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 09:26:17,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:17,612 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:17,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:26:17,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:17,816 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:17,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:17,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1384678109, now seen corresponding path program 4 times [2024-11-18 09:26:17,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:17,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642305243] [2024-11-18 09:26:17,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:17,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:17,837 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:17,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:18,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:18,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642305243] [2024-11-18 09:26:18,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642305243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:18,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068198893] [2024-11-18 09:26:18,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:18,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:18,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:18,252 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 09:26:18,253 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 09:26:18,303 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:18,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:18,304 WARN L253 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 09:26:18,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:18,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-18 09:26:18,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-18 09:26:18,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:18,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-18 09:26:18,529 INFO L349 Elim1Store]: treesize reduction 8, result has 79.5 percent of original size [2024-11-18 09:26:18,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 61 [2024-11-18 09:26:18,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 39 [2024-11-18 09:26:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:18,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:18,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068198893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:18,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:18,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2024-11-18 09:26:18,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305643145] [2024-11-18 09:26:18,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:18,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 09:26:18,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:18,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 09:26:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2024-11-18 09:26:18,813 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 30 states, 30 states have (on average 1.7) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:19,270 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-18 09:26:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 09:26:19,271 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-18 09:26:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:19,271 INFO L225 Difference]: With dead ends: 34 [2024-11-18 09:26:19,271 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 09:26:19,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=288, Invalid=1272, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 09:26:19,273 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:19,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 61 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:26:19,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 09:26:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-18 09:26:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-18 09:26:19,280 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2024-11-18 09:26:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:19,280 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-18 09:26:19,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-18 09:26:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:26:19,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:19,281 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:19,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:26:19,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:19,486 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:19,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash -483356095, now seen corresponding path program 5 times [2024-11-18 09:26:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:19,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663325088] [2024-11-18 09:26:19,486 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:26:19,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:19,505 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 09:26:19,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:19,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:19,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663325088] [2024-11-18 09:26:19,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663325088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:19,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895843283] [2024-11-18 09:26:19,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:26:19,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:19,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:19,612 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 09:26:19,613 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 09:26:19,669 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 09:26:19,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:19,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 09:26:19,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:19,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:19,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895843283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:19,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:19,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-11-18 09:26:19,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574342429] [2024-11-18 09:26:19,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:19,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 09:26:19,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 09:26:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:26:19,812 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:19,881 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-11-18 09:26:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 09:26:19,881 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-18 09:26:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:19,881 INFO L225 Difference]: With dead ends: 53 [2024-11-18 09:26:19,882 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 09:26:19,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:26:19,882 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:19,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 29 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:26:19,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 09:26:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-18 09:26:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-18 09:26:19,887 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2024-11-18 09:26:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:19,887 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-18 09:26:19,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-18 09:26:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 09:26:19,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:19,888 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:19,901 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 09:26:20,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:20,088 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:20,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:20,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1023492733, now seen corresponding path program 6 times [2024-11-18 09:26:20,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:20,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631884587] [2024-11-18 09:26:20,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:26:20,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:20,117 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 09:26:20,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:20,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631884587] [2024-11-18 09:26:20,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631884587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683175826] [2024-11-18 09:26:20,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:26:20,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:20,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:20,969 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 09:26:20,970 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 09:26:21,028 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 09:26:21,029 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:21,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 09:26:21,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:21,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:21,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:26:21,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:21,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-18 09:26:21,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:21,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:21,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:21,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:21,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:22,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 87 [2024-11-18 09:26:22,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:22,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4331 treesize of output 3563 [2024-11-18 09:26:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:22,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683175826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:22,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:22,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 18] total 47 [2024-11-18 09:26:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67038166] [2024-11-18 09:26:22,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:22,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-18 09:26:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-18 09:26:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1900, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 09:26:22,083 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 47 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:22,797 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-11-18 09:26:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 09:26:22,797 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-18 09:26:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:22,798 INFO L225 Difference]: With dead ends: 41 [2024-11-18 09:26:22,798 INFO L226 Difference]: Without dead ends: 37 [2024-11-18 09:26:22,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=585, Invalid=3447, Unknown=0, NotChecked=0, Total=4032 [2024-11-18 09:26:22,799 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:22,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 127 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:26:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-18 09:26:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-18 09:26:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2024-11-18 09:26:22,806 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2024-11-18 09:26:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:22,806 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2024-11-18 09:26:22,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2024-11-18 09:26:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 09:26:22,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:22,808 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:22,820 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 09:26:23,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:23,013 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:23,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash 697103841, now seen corresponding path program 7 times [2024-11-18 09:26:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949165644] [2024-11-18 09:26:23,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:26:23,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:23,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949165644] [2024-11-18 09:26:23,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949165644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:23,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642711420] [2024-11-18 09:26:23,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:26:23,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:23,121 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 09:26:23,123 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 09:26:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:23,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:26:23,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:23,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:23,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642711420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:23,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:23,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-18 09:26:23,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554302324] [2024-11-18 09:26:23,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:23,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 09:26:23,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:23,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 09:26:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-18 09:26:23,342 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:23,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:23,429 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-11-18 09:26:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:26:23,430 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-18 09:26:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:23,430 INFO L225 Difference]: With dead ends: 61 [2024-11-18 09:26:23,430 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 09:26:23,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-18 09:26:23,431 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:23,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 09:26:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2024-11-18 09:26:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-11-18 09:26:23,439 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2024-11-18 09:26:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:23,439 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-11-18 09:26:23,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-11-18 09:26:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 09:26:23,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:23,442 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:23,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:26:23,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:23,643 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:23,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash -880704545, now seen corresponding path program 8 times [2024-11-18 09:26:23,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:23,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313749862] [2024-11-18 09:26:23,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:23,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:23,668 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:23,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:24,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313749862] [2024-11-18 09:26:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313749862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034744318] [2024-11-18 09:26:24,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:24,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:24,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:24,821 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:24,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:26:24,883 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:24,883 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:24,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-18 09:26:24,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:24,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:24,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:26:24,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:24,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-18 09:26:24,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:24,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-18 09:26:25,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:25,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:25,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:25,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:25,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:25,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:25,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 147 [2024-11-18 09:26:25,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:25,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 439849 treesize of output 374313 [2024-11-18 09:26:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:25,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034744318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:25,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:25,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 22] total 50 [2024-11-18 09:26:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394980329] [2024-11-18 09:26:25,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:25,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-18 09:26:25,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-18 09:26:25,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2167, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 09:26:25,975 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 50 states, 50 states have (on average 1.72) internal successors, (86), 50 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:26,778 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-11-18 09:26:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 09:26:26,779 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.72) internal successors, (86), 50 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-18 09:26:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:26,779 INFO L225 Difference]: With dead ends: 46 [2024-11-18 09:26:26,779 INFO L226 Difference]: Without dead ends: 42 [2024-11-18 09:26:26,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=618, Invalid=3938, Unknown=0, NotChecked=0, Total=4556 [2024-11-18 09:26:26,780 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 108 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:26,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 129 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:26:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-18 09:26:26,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-18 09:26:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-18 09:26:26,786 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-11-18 09:26:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:26,786 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-18 09:26:26,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.72) internal successors, (86), 50 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-18 09:26:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 09:26:26,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:26,787 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:26,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 09:26:26,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 09:26:26,987 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:26,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:26,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1812577787, now seen corresponding path program 9 times [2024-11-18 09:26:26,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:26,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116650390] [2024-11-18 09:26:26,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:26,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:27,018 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 09:26:27,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:27,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116650390] [2024-11-18 09:26:27,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116650390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862195428] [2024-11-18 09:26:27,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:27,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:27,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:27,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:26:27,240 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 09:26:27,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:27,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 09:26:27,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:27,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:27,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862195428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:27,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:27,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-18 09:26:27,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484252396] [2024-11-18 09:26:27,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:27,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 09:26:27,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 09:26:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-18 09:26:27,443 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:27,551 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-11-18 09:26:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 09:26:27,551 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-18 09:26:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:27,551 INFO L225 Difference]: With dead ends: 69 [2024-11-18 09:26:27,551 INFO L226 Difference]: Without dead ends: 45 [2024-11-18 09:26:27,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-18 09:26:27,552 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:27,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 55 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-18 09:26:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-11-18 09:26:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-18 09:26:27,558 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2024-11-18 09:26:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:27,558 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-18 09:26:27,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:27,558 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-18 09:26:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 09:26:27,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:27,559 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:27,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 09:26:27,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:27,760 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:27,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1463861959, now seen corresponding path program 10 times [2024-11-18 09:26:27,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:27,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807744441] [2024-11-18 09:26:27,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:27,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:27,775 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:27,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:28,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:28,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807744441] [2024-11-18 09:26:28,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807744441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:28,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243247907] [2024-11-18 09:26:28,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:28,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:28,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:28,851 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:28,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:26:28,907 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:28,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:28,909 WARN L253 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-18 09:26:28,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:28,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-18 09:26:28,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-18 09:26:28,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:28,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-18 09:26:28,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:28,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-18 09:26:28,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:28,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 72 [2024-11-18 09:26:29,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:29,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-18 09:26:29,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2024-11-18 09:26:29,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2024-11-18 09:26:29,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2024-11-18 09:26:29,828 INFO L349 Elim1Store]: treesize reduction 80, result has 60.2 percent of original size [2024-11-18 09:26:29,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 119 treesize of output 164 [2024-11-18 09:26:29,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 105 [2024-11-18 09:26:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:29,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:30,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243247907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:30,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:30,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 29, 29] total 66 [2024-11-18 09:26:30,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107627392] [2024-11-18 09:26:30,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:30,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-18 09:26:30,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-18 09:26:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=3740, Unknown=0, NotChecked=0, Total=4290 [2024-11-18 09:26:30,820 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 66 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 66 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:33,633 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-18 09:26:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-18 09:26:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 66 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-18 09:26:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:33,634 INFO L225 Difference]: With dead ends: 54 [2024-11-18 09:26:33,634 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 09:26:33,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3169 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1364, Invalid=8536, Unknown=0, NotChecked=0, Total=9900 [2024-11-18 09:26:33,636 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 91 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:33,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 124 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:26:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 09:26:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2024-11-18 09:26:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-11-18 09:26:33,643 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 41 [2024-11-18 09:26:33,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:33,643 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-11-18 09:26:33,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 66 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:33,644 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-11-18 09:26:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 09:26:33,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:33,644 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:33,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 09:26:33,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 09:26:33,845 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:33,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 409975325, now seen corresponding path program 11 times [2024-11-18 09:26:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:33,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975788461] [2024-11-18 09:26:33,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:26:33,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:33,865 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-18 09:26:33,866 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 59 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:34,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:34,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975788461] [2024-11-18 09:26:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975788461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:34,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967166056] [2024-11-18 09:26:34,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:26:34,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:34,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:34,004 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:34,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:26:34,127 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-18 09:26:34,127 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:34,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 09:26:34,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:34,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 59 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:34,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967166056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:34,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:34,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2024-11-18 09:26:34,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640641041] [2024-11-18 09:26:34,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:34,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 09:26:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 09:26:34,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2024-11-18 09:26:34,364 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:34,497 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-11-18 09:26:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 09:26:34,498 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-18 09:26:34,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:34,499 INFO L225 Difference]: With dead ends: 77 [2024-11-18 09:26:34,499 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 09:26:34,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 67 SyntacticMatches, 14 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2024-11-18 09:26:34,499 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 49 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:34,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 45 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:34,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 09:26:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2024-11-18 09:26:34,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:34,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-11-18 09:26:34,509 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2024-11-18 09:26:34,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:34,509 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-11-18 09:26:34,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-11-18 09:26:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 09:26:34,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:34,510 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:34,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:26:34,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 09:26:34,711 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:34,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1967037797, now seen corresponding path program 12 times [2024-11-18 09:26:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:34,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607202001] [2024-11-18 09:26:34,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:26:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:34,741 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-18 09:26:34,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:36,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:36,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607202001] [2024-11-18 09:26:36,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607202001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:36,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947193977] [2024-11-18 09:26:36,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:26:36,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:36,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:36,684 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:36,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:26:36,785 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-18 09:26:36,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:36,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-18 09:26:36,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:36,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:36,832 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-18 09:26:36,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2024-11-18 09:26:36,869 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-18 09:26:36,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-11-18 09:26:36,953 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-11-18 09:26:36,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 48 [2024-11-18 09:26:37,045 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2024-11-18 09:26:37,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 54 treesize of output 62 [2024-11-18 09:26:37,147 INFO L349 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2024-11-18 09:26:37,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 65 treesize of output 76 [2024-11-18 09:26:37,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:37,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:37,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-18 09:26:37,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-18 09:26:38,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2024-11-18 09:26:38,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2024-11-18 09:26:38,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:26:38,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:38,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 40 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 129 treesize of output 197 [2024-11-18 09:26:38,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 110 [2024-11-18 09:26:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 26 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:38,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:40,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-18 09:26:40,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-18 09:26:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947193977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:40,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:40,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 34, 35] total 89 [2024-11-18 09:26:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806568679] [2024-11-18 09:26:40,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:40,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-18 09:26:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-18 09:26:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=7019, Unknown=0, NotChecked=0, Total=7832 [2024-11-18 09:26:40,200 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 89 states, 89 states have (on average 1.3595505617977528) internal successors, (121), 89 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:43,640 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-11-18 09:26:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-18 09:26:43,640 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.3595505617977528) internal successors, (121), 89 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 09:26:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:43,641 INFO L225 Difference]: With dead ends: 55 [2024-11-18 09:26:43,641 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 09:26:43,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4494 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1700, Invalid=12580, Unknown=0, NotChecked=0, Total=14280 [2024-11-18 09:26:43,643 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 141 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:43,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 166 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:26:43,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 09:26:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-18 09:26:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2024-11-18 09:26:43,655 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 46 [2024-11-18 09:26:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:43,655 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2024-11-18 09:26:43,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.3595505617977528) internal successors, (121), 89 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:43,655 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2024-11-18 09:26:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-18 09:26:43,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:43,656 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:43,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 09:26:43,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 09:26:43,856 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:43,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:43,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2107054537, now seen corresponding path program 13 times [2024-11-18 09:26:43,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:43,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644560706] [2024-11-18 09:26:43,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:26:43,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 73 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:44,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644560706] [2024-11-18 09:26:44,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644560706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725991791] [2024-11-18 09:26:44,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:26:44,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:44,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:44,030 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:44,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 09:26:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:44,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 09:26:44,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:44,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725991791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:44,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:44,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-18 09:26:44,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482180138] [2024-11-18 09:26:44,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:44,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 09:26:44,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 09:26:44,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-18 09:26:44,337 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:44,473 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-11-18 09:26:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 09:26:44,473 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-18 09:26:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:44,474 INFO L225 Difference]: With dead ends: 85 [2024-11-18 09:26:44,474 INFO L226 Difference]: Without dead ends: 55 [2024-11-18 09:26:44,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 73 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 09:26:44,475 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 79 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:44,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 41 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:44,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-18 09:26:44,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2024-11-18 09:26:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-11-18 09:26:44,493 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 49 [2024-11-18 09:26:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:44,493 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-11-18 09:26:44,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-11-18 09:26:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 09:26:44,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:44,494 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:44,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 09:26:44,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 09:26:44,695 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:44,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1527844875, now seen corresponding path program 14 times [2024-11-18 09:26:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377607755] [2024-11-18 09:26:44,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:44,712 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:44,712 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:46,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:46,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377607755] [2024-11-18 09:26:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377607755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:46,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453161402] [2024-11-18 09:26:46,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:46,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:46,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:46,516 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:46,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 09:26:46,588 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:46,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:46,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-18 09:26:46,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:46,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:46,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:26:46,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:46,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-18 09:26:46,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:46,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-18 09:26:46,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:46,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-18 09:26:46,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:46,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-18 09:26:46,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:46,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-18 09:26:46,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:46,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:46,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:46,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:47,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:47,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:47,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:47,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:26:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:47,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:48,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 437 treesize of output 423 [2024-11-18 09:26:49,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:49,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 779881695693643 treesize of output 656736393382731 [2024-11-18 09:26:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:50,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453161402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:50,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:50,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 28, 34] total 70 [2024-11-18 09:26:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373580717] [2024-11-18 09:26:50,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:50,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-18 09:26:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-18 09:26:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=584, Invalid=4246, Unknown=0, NotChecked=0, Total=4830 [2024-11-18 09:26:50,755 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 70 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:51,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:51,449 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-18 09:26:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 09:26:51,450 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 70 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-18 09:26:51,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:51,450 INFO L225 Difference]: With dead ends: 61 [2024-11-18 09:26:51,450 INFO L226 Difference]: Without dead ends: 57 [2024-11-18 09:26:51,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=627, Invalid=4485, Unknown=0, NotChecked=0, Total=5112 [2024-11-18 09:26:51,451 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 50 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:51,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 201 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:26:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-18 09:26:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-11-18 09:26:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-11-18 09:26:51,463 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2024-11-18 09:26:51,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:51,463 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-11-18 09:26:51,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 70 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:51,463 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-11-18 09:26:51,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 09:26:51,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:51,463 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:51,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 09:26:51,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:51,664 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:51,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash -440453543, now seen corresponding path program 15 times [2024-11-18 09:26:51,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:51,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262522993] [2024-11-18 09:26:51,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:51,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:51,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-18 09:26:51,701 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 95 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:51,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262522993] [2024-11-18 09:26:51,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262522993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:51,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823028329] [2024-11-18 09:26:51,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:51,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:51,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:51,911 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:51,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 09:26:52,029 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-18 09:26:52,029 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:52,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 09:26:52,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 117 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:52,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 117 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:52,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823028329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:52,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:52,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-18 09:26:52,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58470457] [2024-11-18 09:26:52,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:52,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 09:26:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 09:26:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:26:52,368 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:52,535 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-18 09:26:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 09:26:52,535 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-18 09:26:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:52,536 INFO L225 Difference]: With dead ends: 93 [2024-11-18 09:26:52,536 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 09:26:52,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 80 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 09:26:52,537 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 63 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:52,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 49 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 09:26:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2024-11-18 09:26:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-11-18 09:26:52,549 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2024-11-18 09:26:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:52,549 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-11-18 09:26:52,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-11-18 09:26:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 09:26:52,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:52,558 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:52,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-18 09:26:52,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 09:26:52,759 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:52,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash -995174057, now seen corresponding path program 16 times [2024-11-18 09:26:52,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423314645] [2024-11-18 09:26:52,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:52,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:52,783 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:52,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 66 proven. 131 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:54,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:54,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423314645] [2024-11-18 09:26:54,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423314645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:54,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290958963] [2024-11-18 09:26:54,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:54,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:54,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:54,935 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:26:54,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 09:26:55,009 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:55,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:55,011 WARN L253 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-18 09:26:55,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:55,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-18 09:26:55,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-18 09:26:55,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:55,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-18 09:26:55,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:55,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-18 09:26:55,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:55,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 72 [2024-11-18 09:26:55,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:55,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 87 [2024-11-18 09:26:55,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:55,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 102 [2024-11-18 09:26:55,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:55,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 117 [2024-11-18 09:26:55,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:26:55,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-18 09:26:55,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2024-11-18 09:26:55,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2024-11-18 09:26:55,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2024-11-18 09:26:55,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-18 09:26:56,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 71 [2024-11-18 09:26:56,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 81 [2024-11-18 09:26:57,043 INFO L349 Elim1Store]: treesize reduction 266, result has 57.6 percent of original size [2024-11-18 09:26:57,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 199 treesize of output 416 [2024-11-18 09:26:57,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 177 [2024-11-18 09:26:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 89 proven. 108 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:57,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 24 proven. 173 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:58,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290958963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:58,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:58,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 39, 39] total 84 [2024-11-18 09:26:58,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170344653] [2024-11-18 09:26:58,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:58,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-18 09:26:58,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:58,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-18 09:26:58,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=6332, Unknown=0, NotChecked=0, Total=6972 [2024-11-18 09:26:58,913 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 84 states, 84 states have (on average 1.5357142857142858) internal successors, (129), 84 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:27:06,135 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-11-18 09:27:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 09:27:06,136 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.5357142857142858) internal successors, (129), 84 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-18 09:27:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:27:06,136 INFO L225 Difference]: With dead ends: 64 [2024-11-18 09:27:06,136 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 09:27:06,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4468 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1575, Invalid=12467, Unknown=0, NotChecked=0, Total=14042 [2024-11-18 09:27:06,137 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:27:06,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 156 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 09:27:06,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 09:27:06,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-18 09:27:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:06,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-18 09:27:06,153 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 56 [2024-11-18 09:27:06,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:27:06,153 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-18 09:27:06,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.5357142857142858) internal successors, (129), 84 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-18 09:27:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 09:27:06,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:27:06,154 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:27:06,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-18 09:27:06,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:06,355 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:27:06,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:27:06,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1769776755, now seen corresponding path program 17 times [2024-11-18 09:27:06,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:27:06,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561551930] [2024-11-18 09:27:06,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:27:06,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:27:06,380 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-18 09:27:06,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 128 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:06,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:27:06,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561551930] [2024-11-18 09:27:06,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561551930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:27:06,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203209966] [2024-11-18 09:27:06,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:27:06,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:06,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:27:06,630 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:27:06,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 09:27:06,823 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-18 09:27:06,824 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:06,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 09:27:06,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:27:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 145 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:07,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:27:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 128 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:07,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203209966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:27:07,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:27:07,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 33 [2024-11-18 09:27:07,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590059797] [2024-11-18 09:27:07,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:27:07,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 09:27:07,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:27:07,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 09:27:07,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 09:27:07,167 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 33 states, 33 states have (on average 2.606060606060606) internal successors, (86), 33 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:27:07,338 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-11-18 09:27:07,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 09:27:07,338 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.606060606060606) internal successors, (86), 33 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-18 09:27:07,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:27:07,339 INFO L225 Difference]: With dead ends: 101 [2024-11-18 09:27:07,339 INFO L226 Difference]: Without dead ends: 65 [2024-11-18 09:27:07,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 88 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=458, Invalid=1348, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 09:27:07,339 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 88 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:27:07,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 53 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:27:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-18 09:27:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2024-11-18 09:27:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:07,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2024-11-18 09:27:07,357 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 59 [2024-11-18 09:27:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:27:07,357 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2024-11-18 09:27:07,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.606060606060606) internal successors, (86), 33 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2024-11-18 09:27:07,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 09:27:07,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:27:07,358 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:27:07,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-18 09:27:07,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:07,559 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:27:07,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:27:07,559 INFO L85 PathProgramCache]: Analyzing trace with hash -680008369, now seen corresponding path program 18 times [2024-11-18 09:27:07,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:27:07,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051048043] [2024-11-18 09:27:07,559 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:27:07,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:27:07,592 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:27:07,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:10,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:27:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051048043] [2024-11-18 09:27:10,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051048043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:27:10,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536080989] [2024-11-18 09:27:10,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:27:10,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:10,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:27:10,728 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:27:10,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 09:27:10,972 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:27:10,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:10,974 WARN L253 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-18 09:27:10,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:27:10,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:27:10,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:27:11,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:11,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-18 09:27:11,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:11,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-18 09:27:11,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:11,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-18 09:27:11,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:11,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-18 09:27:11,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:11,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-18 09:27:11,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:11,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-18 09:27:11,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:11,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-18 09:27:11,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:27:11,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:11,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:12,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:12,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:12,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:12,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:12,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-18 09:27:12,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-18 09:27:13,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:27:13,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:27:13,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:27:13,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:13,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 42 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 246 [2024-11-18 09:27:13,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 244 treesize of output 165 [2024-11-18 09:27:13,352 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-18 09:27:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:13,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:27:16,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 391 treesize of output 379 [2024-11-18 09:27:16,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:16,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 24922864101215 treesize of output 20524817590111 [2024-11-18 09:27:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:17,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536080989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:27:17,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:27:17,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 47] total 106 [2024-11-18 09:27:17,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592426058] [2024-11-18 09:27:17,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:27:17,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-18 09:27:17,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:27:17,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-18 09:27:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1574, Invalid=9556, Unknown=0, NotChecked=0, Total=11130 [2024-11-18 09:27:17,492 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 106 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 106 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:27:21,765 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2024-11-18 09:27:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-18 09:27:21,765 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 106 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-18 09:27:21,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:27:21,766 INFO L225 Difference]: With dead ends: 109 [2024-11-18 09:27:21,766 INFO L226 Difference]: Without dead ends: 68 [2024-11-18 09:27:21,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7532 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3609, Invalid=19953, Unknown=0, NotChecked=0, Total=23562 [2024-11-18 09:27:21,768 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 241 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:27:21,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 176 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 09:27:21,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-18 09:27:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-11-18 09:27:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:21,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2024-11-18 09:27:21,785 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 61 [2024-11-18 09:27:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:27:21,785 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2024-11-18 09:27:21,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 106 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:21,786 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2024-11-18 09:27:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 09:27:21,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:27:21,786 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:27:21,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 09:27:21,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:21,987 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:27:21,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:27:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1556195347, now seen corresponding path program 19 times [2024-11-18 09:27:21,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:27:21,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990168747] [2024-11-18 09:27:21,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:27:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:27:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:27:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:25,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:27:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990168747] [2024-11-18 09:27:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990168747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:27:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126564847] [2024-11-18 09:27:25,835 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:27:25,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:25,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:27:25,836 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:27:25,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 09:27:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:27:25,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-18 09:27:25,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:27:25,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:27:25,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:27:25,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:25,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-18 09:27:26,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:26,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-18 09:27:26,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:26,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-18 09:27:26,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:26,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-18 09:27:26,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:26,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-18 09:27:26,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:26,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-18 09:27:26,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:26,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-18 09:27:26,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:26,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 98 [2024-11-18 09:27:26,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:27:27,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:27,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:27,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:27,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:27,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:27,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:27,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:27,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:28,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:28,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:27:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:28,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:27:33,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 863 treesize of output 843 [2024-11-18 09:27:36,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:36,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input -7983853510565696367 treesize of output -7983853510565696367